Welcome to LookChem.com Sign In|Join Free

Cas Database

104-51-8

104-51-8

Identification

  • Product Name:Butylbenzene

  • CAS Number: 104-51-8

  • EINECS:203-209-7

  • Molecular Weight:134.221

  • Molecular Formula: C10H14

  • HS Code:2902 90 00

  • Mol File:104-51-8.mol

Synonyms:1-Butylbenzene;1-Phenylbutane;NSC 8465;Phenylbutane;n-Butylbenzene;Benzene, butyl-;

Post Buying Request Now
Entrust LookChem procurement to find high-quality suppliers faster

Safety information and MSDS view more

  • Pictogram(s):FlammableF,ToxicT

  • Hazard Codes:F,T,N

  • Signal Word:Warning

  • Hazard Statement:H226 Flammable liquid and vapourH315 Causes skin irritation H319 Causes serious eye irritation H400 Very toxic to aquatic life

  • First-aid measures: General adviceConsult a physician. Show this safety data sheet to the doctor in attendance.If inhaled If breathed in, move person into fresh air. If not breathing, give artificial respiration. Consult a physician. In case of skin contact Wash off with soap and plenty of water. Consult a physician. In case of eye contact Rinse thoroughly with plenty of water for at least 15 minutes and consult a physician. If swallowed Never give anything by mouth to an unconscious person. Rinse mouth with water. Consult a physician. Excerpt from ERG Guide 128 [Flammable Liquids (Water-Immiscible)]: Inhalation or contact with material may irritate or burn skin and eyes. Fire may produce irritating, corrosive and/or toxic gases. Vapors may cause dizziness or suffocation. Runoff from fire control or dilution water may cause pollution. (ERG, 2016) Basic treatment: Establish a patent airway. Suction if necessary. Watch for signs of respiratory insufficiency and assist ventilations if necessary. Administer oxygen by nonrebreather mask at 10 to 15 L/min. Monitor for pulmonary edema and treat if necessary ... . Monitor for shock and treat if necessary ... . For eye contamination, flush eyes immediately with water. Irrigate each eye continuously with normal saline during transport ... . Do not use emetics. For ingestion, rinse mouth and administer 5 ml/kg up to 200 ml of water for dilution if the patient can swallow, has a strong gag reflex, and does not drool. Administer activated charcoal ... . /Aromatic hydrocarbons and related compounds/

  • Fire-fighting measures: Suitable extinguishing media Personnel protection: ... Wear positive pressure self-container breathing apparatus when fighting fires involving this material. ... /Butyl benzenes/ Excerpt from ERG Guide 128 [Flammable Liquids (Water-Immiscible)]: HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames. Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapor explosion hazard indoors, outdoors or in sewers. Those substances designated with a (P) may polymerize explosively when heated or involved in a fire. Runoff to sewer may create fire or explosion hazard. Containers may explode when heated. Many liquids are lighter than water. Substance may be transported hot. For hybrid vehicles, ERG Guide 147 (lithium ion batteries) or ERG Guide 138 (sodium batteries) should also be consulted. If molten aluminum is involved, refer to ERG Guide 169. (ERG, 2016) Wear self-contained breathing apparatus for firefighting if necessary.

  • Accidental release measures: Use personal protective equipment. Avoid dust formation. Avoid breathing vapours, mist or gas. Ensure adequate ventilation. Evacuate personnel to safe areas. Avoid breathing dust. For personal protection see section 8. Prevent further leakage or spillage if safe to do so. Do not let product enter drains. Discharge into the environment must be avoided. Pick up and arrange disposal. Sweep up and shovel. Keep in suitable, closed containers for disposal.

  • Handling and storage: Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Avoid exposure - obtain special instructions before use.Provide appropriate exhaust ventilation at places where dust is formed. For precautions see section 2.2. Store in cool place. Keep container tightly closed in a dry and well-ventilated place.

  • Exposure controls/personal protection:Occupational Exposure limit valuesBiological limit values Handle in accordance with good industrial hygiene and safety practice. Wash hands before breaks and at the end of workday. Eye/face protection Safety glasses with side-shields conforming to EN166. Use equipment for eye protection tested and approved under appropriate government standards such as NIOSH (US) or EN 166(EU). Skin protection Wear impervious clothing. The type of protective equipment must be selected according to the concentration and amount of the dangerous substance at the specific workplace. Handle with gloves. Gloves must be inspected prior to use. Use proper glove removal technique(without touching glove's outer surface) to avoid skin contact with this product. Dispose of contaminated gloves after use in accordance with applicable laws and good laboratory practices. Wash and dry hands. The selected protective gloves have to satisfy the specifications of EU Directive 89/686/EEC and the standard EN 374 derived from it. Respiratory protection Wear dust mask when handling large quantities. Thermal hazards

Supplier and reference price

  • Manufacture/Brand
  • Product Description
  • Packaging
  • Price
  • Delivery
  • Purchase
  • Manufacture/Brand:Usbiological
  • Product Description:Butylbenzene
  • Packaging:10g
  • Price:$ 403
  • Delivery:In stock
  • Buy Now
  • Manufacture/Brand:TRC
  • Product Description:Butylbenzene
  • Packaging:100g
  • Price:$ 275
  • Delivery:In stock
  • Buy Now
  • Manufacture/Brand:TCI Chemical
  • Product Description:Butylbenzene >99.0%(GC)
  • Packaging:100mL
  • Price:$ 81
  • Delivery:In stock
  • Buy Now
  • Manufacture/Brand:TCI Chemical
  • Product Description:Butylbenzene >99.0%(GC)
  • Packaging:25mL
  • Price:$ 31
  • Delivery:In stock
  • Buy Now
  • Manufacture/Brand:TCI Chemical
  • Product Description:Butylbenzene >99.0%(GC)
  • Packaging:500mL
  • Price:$ 244
  • Delivery:In stock
  • Buy Now
  • Manufacture/Brand:Sigma-Aldrich
  • Product Description:Butylbenzene ≥99%
  • Packaging:500ml
  • Price:$ 261
  • Delivery:In stock
  • Buy Now
  • Manufacture/Brand:Sigma-Aldrich
  • Product Description:Butylbenzene ≥99%
  • Packaging:100ml
  • Price:$ 86.1
  • Delivery:In stock
  • Buy Now
  • Manufacture/Brand:Sigma-Aldrich
  • Product Description:Butylbenzene analytical standard
  • Packaging:47322
  • Price:$ 23.8
  • Delivery:In stock
  • Buy Now
  • Manufacture/Brand:Sigma-Aldrich
  • Product Description:n-Butylbenzene solution 5000 μg/mL in methanol, analytical standard
  • Packaging:41105
  • Price:$ 45.6
  • Delivery:In stock
  • Buy Now
  • Manufacture/Brand:Sigma-Aldrich
  • Product Description:Butylbenzene ≥99%
  • Packaging:25ml
  • Price:$ 32.2
  • Delivery:In stock
  • Buy Now

Relevant articles and documentsAll total 294 Articles be found

Synthesis of insoluble polystyrene-supported flavins and their catalysis in aerobic reduction of olefins

Arakawa, Yukihiro,Kawachi, Risa,Tezuka, Yoshihiko,Minagawa, Keiji,Imada, Yasushi

, p. 1706 - 1713 (2017)

2′,4′-p-Vinylbenzylideneriboflavin (2′,4′-PVBRFl) was prepared as a flavin-containing monomer and copolymerized with divinylbenzene and styrene or its p-substituted derivatives such as 4-acetoxystyrene, 4-vinylbenzyl alcohol, and 4-vinylbenzoic acid to give the corresponding non-functionalized and functionalized PS-DVB-supported flavins PS(H)-DVB-Fl, PS(OAc)-DVB-Fl, PS(CH2OH)-DVB-Fl, and PS(COOH)-DVB-Fl, respectively. PS(OH)-DVB-Fl was also prepared by hydrolysis of PS(OAc)-DVB-Fl under basic conditions. These novel flavin-containing insoluble polymers exhibited characteristic fluorescence in solid state, except PS(OH)-DVB-Fl, and different catalytic activities in aerobic reduction of olefins by in situ generated diimide from hydrazine depending on their pendant functional group. For example, PS(H)-DVB-Fl was found to be particularly effective for neutral hydrophobic substrates, which could be readily recovered by a simple filtration and reused more than 10 times without loss in catalytic activity. On the other hand, PS(OH)-DVB-Fl and PS(COOH)-DVB-Fl proved to be highly active for phenolic substrates known to be less reactive in the reaction with conventional non-supported flavin catalysts.

Improved preparation of secondary zinc iodides by 1,2-migration of sp3 carbenoids

Shibli,Varghese,Knochel,Marek

, p. 818 - 820 (2001)

R2Zn in the presence of NMP or LiBr promotes the intramolecular rearrangement of 1,1-diiodoalkanes via the formation of sp3 secondary zinc carbenoid.

Shultz,Linden

, p. 2011,2013, 2014 (1957)

Tamao et al.

, p. 4374 (1972)

Alkene Hydrogenations by Soluble Iron Nanocluster Catalysts

Gieshoff, Tim N.,Chakraborty, Uttam,Villa, Matteo,Jacobi von Wangelin, Axel

, p. 3585 - 3589 (2017)

The replacement of noble metal technologies and the realization of new reactivities with earth-abundant metals is at the heart of sustainable synthesis. Alkene hydrogenations have so far been most effectively performed by noble metal catalysts. This study reports an iron-catalyzed hydrogenation protocol for tri- and tetra-substituted alkenes of unprecedented activity and scope under mild conditions (1–4 bar H2, 20 °C). Instructive snapshots at the interface of homogeneous and heterogeneous iron catalysis were recorded by the isolation of novel Fe nanocluster architectures that act as catalyst reservoirs and soluble seeds of particle growth.

Efficient and rapid C-Si bond cleavage in supercritical water

Itami, Kenichiro,Terakawa, Koji,Yoshida, Jun-ichi,Kajimoto, Okitsugu

, p. 6058 - 6059 (2003)

Arylsilanes, alkenylsilanes, allylic silanes, and alkylsilanes were found to undergo extremely facile and rapid C-Si bond cleavage in supercritical water. The rapid C-Si bond cleavage occurred even with robust unactivated tetraalkylsilanes. The control experiments revealed the dramatic difference between supercritical and subcritical conditions and that between supercritical water and supercritical methanol, attesting to a unique reactivity of supercritical water in C-Si bond cleavage. Copyright

Scope and Limitations of the Palladium-Catalyzed Cross-Coupling Reaction of in Situ Generated Organoboranes with Aryl and Vinyl Halides

Maddaford, Shawn P.,Keay, Brian A.

, p. 6501 - 6503 (1994)

The in situ palladium(0)-catalyzed Suzuki reaction is shown to be an efficient method for the cross-coupling of aryl-, furyl-, primary, and benzylic boranes with aryl or vinyl bromides and iodides without the isolation of the organoboronic acid or the addition of any external base.

Alkylation of alkyl aromatic hydrocarbons over metal oxide-alkali metal superbasic catalysts

Kijenski,Radomski,Fedorynska

, p. 407 - 425 (2001)

The alkylation of toluene, ethylbenzene, cumene, and o-, m-, and p-xylenes with ethylene, propylene, and 1,2-diphenylethylene was studied over superbasic MgO-K and γ-Al2O3-K catalysts and over model systems of the electron donor acceptor complex type. The ethylation and propylation of alkylbenzenes indicated that the donor power and the concentration of the one-electron donor centers were not the only factors, which determined the activity (depicted by the initial reaction rate, turnover number, or alkylbenzene conversion) and selectivity of the catalytic system. In the series of reactions, a higher total conversion of alkyl aromatic hydrocarbons to their ethylation or propylation products was achieved over γ-Al2O3-K systems. The reaction chemoselectivity (mono- or difunctionalization of alkylbenzenes) depended on the nature of the alkyl aromatic reactant and alkylating alkene, on the reaction temperature, and on the used catalyst.

Divergent Reactivity of Stannane and Silane in the Trifluoromethylation of PdII: Cyclic Transition State versus Difluorocarbene Release

Pu, Maoping,Sanhueza, Italo A.,Senol, Erdem,Schoenebeck, Franziska

, p. 15081 - 15085 (2018)

The transmetalation is a key elementary step in cross-coupling reactions. Yet, the precise nature of its mechanism and transition state geometry are frequently elusive. This report discloses our study of the transmetalation of [PdII]-F complexes with the silane- and stannane-based trifluoromethylation agents, R3SiCF3 and R3SnCF3. A divergent reactivity was uncovered, with the stannane showing selective R-group transfer, and the silane selective CF3-group transfer. Using a combined experimental and computational approach, we uncovered a hitherto unrecognized transmetalation mechanism with the widely employed R3SiCF3 reagent, explaining its unique activity in metal-catalyzed trifluoromethylations. While the stannane reacts via a cyclic, 4-membered transition state, the silane undergoes a fundamentally different pathway and releases a difluorocarbene in the transmetalation event. Molecular dynamics studies clearly reinforced the liberation of a free CF2 carbene, which reacts with [PdII]-F to ultimately generate [PdII]-CF3.

Sneeden,Zeiss

, p. 369,370 (1968)

Craig,Larrabee

, p. 1195 (1951)

-

Corey,Posner

, p. 315 (1970)

-

Cross-coupling in a flow microreactor: Space integration of lithiation and murahashi coupling

Nagaki, Aiichiro,Kenmoku, Akira,Moriwaki, Yuya,Hayashi, Atsushi,Yoshida, Jun-Ichi

, p. 7543 - 7547 (2010)

Going with the flow: The use of palladium catalysts bearing a carbene ligand resulted in a faster Murahashi coupling, and enabled its integration with the Br-Li exchange of ArBr with Bu-Li in a microreactor (see picture). This system allows the cross-coupling of two different arylbromides within a minute without necessitating low temperatures (-78°C).

Photoinduced, Copper-Catalyzed Alkylation of Amines: A Mechanistic Study of the Cross-Coupling of Carbazole with Alkyl Bromides

Ahn, Jun Myun,Ratani, Tanvi S.,Hannoun, Kareem I.,Fu, Gregory C.,Peters, Jonas C.

, p. 12716 - 12723 (2017)

We have recently reported that a variety of couplings of nitrogen, sulfur, oxygen, and carbon nucleophiles with organic halides can be achieved under mild conditions (-40 to 30 °C) through the use of light and a copper catalyst. Insight into the various mechanisms by which these reactions proceed may enhance our understanding of chemical reactivity and facilitate the development of new methods. In this report, we apply an array of tools (EPR, NMR, transient absorption, and UV-vis spectroscopy; ESI-MS; X-ray crystallography; DFT calculations; reactivity, stereochemical, and product studies) to investigate the photoinduced, copper-catalyzed coupling of carbazole with alkyl bromides. Our observations are consistent with pathways wherein both an excited state of the copper(I) carbazolide complex ([CuI(carb)2]-) and an excited state of the nucleophile (Li(carb)) can serve as photoreductants of the alkyl bromide. The catalytically dominant pathway proceeds from the excited state of Li(carb), generating a carbazyl radical and an alkyl radical. The cross-coupling of these radicals is catalyzed by copper via an out-of-cage mechanism in which [CuI(carb)2]- and [CuII(carb)3]- (carb = carbazolide), both of which have been identified under coupling conditions, are key intermediates, and [CuII(carb)3]- serves as the persistent radical that is responsible for predominant cross-coupling. This study underscores the versatility of copper(II) complexes in engaging with radical intermediates that are generated by disparate pathways, en route to targeted bond constructions.

Solventless Suzuki coupling reactions on palladium-doped potassium fluoride alumina

Kabalka, George W.,Wang, Lei,Pagni, Richard M.,Hair, C. Maxwell,Namboodiri, Vasudevan

, p. 217 - 222 (2003)

A solventless Suzuki coupling reaction has been developed which utilizes a commercially available potassium fluoride alumina mixture and palladium powder. The new reaction is convenient, environmentally friendly, and generates good yields of the coupled products. Aryl iodides react faster than the bromides or chlorides; aryl groups are also more reactive than alkenyl groups, which react faster than alkyl groups. The use of microwave irradiation accelerates the reaction, decreasing reaction times from hours to minutes. The palladium powder catalyst can be recycled using a simple filtration and washing sequence without loss of catalytic activity.

The Role of LiBr and ZnBr2 on the Cross-Coupling of Aryl Bromides with Bu2Zn or BuZnBr

Eckert, Philip,Organ, Michael G.

, p. 15751 - 15754 (2019)

The impact of LiBr and ZnBr2 salts on the Negishi coupling of alkylZnBr and dialkylzinc nucleophiles with both electron-rich and -poor aryl electrophiles has been examined. Focusing only on the more difficult coupling of deactivated (electron-rich) oxidative addition partners, LiBr promotes coupling with BuZnBr, but does not have such an effect with Bu2Zn. The presence of exogenous ZnBr2 shuts down the coupling of both BuZnBr and Bu2Zn, which has been shown before with alkyl electrophiles. Strikingly, the addition of LiBr to Bu2Zn reactions containing exogenous ZnBr2 now fully restores coupling to levels seen without any salt present. This suggests that there is a very important interaction between LiBr and ZnBr2. It is proposed that Lewis acid adducts are forming between ZnBr2 and the electron-rich Pd0 centre and the bromide from LiBr forms inorganic zincates that prevent the catalyst from binding to ZnBr2. This idea has been supported by catalyst design as chlorinating the backbone of the NHC ring of Pd-PEPPSI-IPent to produce Pd-PEPPSI-IPentCl catalyst now gives quantitative conversion, up from a ceiling of only 50 % with the former catalyst.

Nickel- and palladium-catalyzed cross-coupling reaction of polyfluorinated arenes and alkenes with grignard reagents

Saeki, Tomoyuki,Takashima, Yohei,Tamao, Kohei

, p. 1771 - 1774 (2005)

The cross-coupling reaction of fluorobenzene with an aryl Grignard reagent has been reinvestigated which revealed that the reaction readily proceeds under ordinary conditions using a catalytic amount of NiCl2(dppp) even at room temperature. The use of nickel catalysts and Grignard reagent is essential for the activation of the carbon-fluorine bond. The palladium catalyst is also effective for the 1,2-difluorobenzene and trifluorobenzenes to selectively produce the corresponding mono-coupled products while the nickel-based catalyst system affords a mixture of the mono-coupled product and di- or tri-coupled product. Georg Thieme Verlag Stuttgart.

Arene-Metal Complexes. 12. Reaction of (η6-Benzene)tricarbonylchromium with n-Butyllithium

Card, Roger J.,Trahanovsky, Walter S.

, p. 2555 - 2559 (1980)

The reaction of (η6-benzene)tricarbonylchromium with n-butyllithium in tetrahydrofuran at -20 deg C results in the formation of an intermediate which may be quenched by the addition of methyl iodide or iodine to yield (toluene)tricarbonylchromium or (iodobenzene)tricarbonylchromium in 50 or 26percent yield,respectively.The chemistry and the 1H NMR spectrum of this intermediate are consistent with its assignment as (η6-phenyllithium)tricarbonylchromium.If this intermediate is allowed to warm to 0 deg C in the presence of an excess of n-butyllithium,n-butylbenzene is obtained in 80percent yield.Mechanistic details are discussed.

Side-chain alkylation of toluene with propene on caesium/nanoporous carbon catalysts

Stevens, Mark G.,Anderson, Melony R.,Foley, Henry C.

, p. 413 - 414 (1999)

Caesium/nanoporous carbon materials are powerful solid-base catalysts, promoting the side-chain alkylation toluene with propene in a continuous flow reactor conditions as mild as 150°C and 50 psig.

-

Ipatieff,Komarewsky,Pines

, (1936)

-

Batch to flow deoxygenation using visible light photoredox catalysis

Nguyen, John D.,Reiss, Barbara,Dai, Chunhui,Stephenson, Corey R. J.

, p. 4352 - 4354 (2013)

Herein we report a one-pot deoxygenation protocol for primary and secondary alcohols developed via the combination of the Garegg-Samuelsson reaction, visible light-photoredox catalysis, and flow chemistry. This procedure is characterized by mild reaction conditions, easy-to-handle reactants and reagents, excellent functional group tolerance, and good yields.

-

Cristol et al.

, p. 816 (1951)

-

PHOTOCHEMICAL TRANSFORMATIONS - V ORGANIC IODIDES (Part 4) : SOLUTION PHOTOCHEMISTRY OF 4-PHENYL-1-IODOBUTANE AND 4-PHENYL-1-BROMOBUTANE

Subbarao, Kanury V.,Damodaran, N.P.,Dev, Sukh

, p. 2543 - 2548 (1987)

Evidence is presented to show that product development from photolysis of 4-phenyl-1-iodobutane occurs essentially from an ionic species.This conclusion is in accord with our earlier suggestion that in the photocyclization of citronellyl iodide and related compounds, carbocations are involved.

-

Grummitt,Vance

, p. 2669,2674 (1950)

-

-

Kharasch,Lewis,Reynolds

, p. 498 (1943)

-

Stille reactions with tetraalkylstannanes and phenyltrialkylstannanes in low melting sugar-urea-salt mixtures

Imperato, Giovanni,Vasold, Rudolf,Koenig, Burkhard

, p. 2243 - 2247 (2006)

The transfer of simple alkyl groups in Stille reactions usually requires special solvents (HMPA) or certain organotin reagents (stannatranes, monoorganotin halides) to be efficient. Using low-melting mixtures of sugar, urea and inorganic salt as solvent, a fast and efficient palladium-catalyzed alkyl transfer with tetraalkyltin reagents was observed. The high polarity and nucleophilic character of the solvent melt promotes the reaction. Stille biaryl synthesis using electron-poor and electron-rich aryl bromides proceeds with quantitative yields in the sugar-urea-salt melt. Catalyst loading may be reduced to 0.001 mol% and the catalyst melt mixture remains active in several reaction cycles. Showing the same or improved performance for Stille reactions than organic solvents and allowing a very simple work up, sugar-urea-salt melts are a non-toxic and cheap alternative reaction medium available in bulk quantities for the catalytic process.

-

Andersen,Fenton

, p. 3270 (1964)

-

-

Read et al.

, p. 157 (1955)

-

-

Nasarowa,Zukerwanik

, (1948)

-

A RE-EXAMINATION OF THE PALLADIUM-CATALYZED CROSS COUPLING OF ALKYL IODIDES WITH ALKYL GRIGNARD REAGENTS

Yuan, Kaixu,Scott, William J.

, p. 4779 - 4782 (1989)

Reaction of primary alkyl halides with Girgnard reagents in the presence of (dppf)Pd(O) or (dppf)PdCl2 leads to the reduction of the halide.

PREPARATION OF ALKYLBENZENES FROM 1-ALKYLCYCLOHEX-2-ENOLS VIA TRICARBONYLIRON COMPLEXES

Farcasiu, D.,Marino, Gaye

, p. 243 - 248 (1983)

Tertiary cyclohex-2-enols are converted directly to the related tricarbonyl-1,3-cyclohexadieneiron complexes, in good yield.Tricarbonylcyclohexadienyliron salts are conveniently oxidized to the corresponding alkylbenzenes, by cerium(IV) salts.These reactions were incorporated in a procedure of converting the cyclohexenols to aromatics, suitable for the preparation of materials specifically labelled with carbon isotopes.

A facile synthesis of a solvent-dispersible magnetically recoverable Pd0 catalyst for the C-C coupling reaction

Wu, Li,Yuan, Bin,Liu, Mengmeng,Huo, Hongfei,Long, Yu,Ma, Jiantai,Lu, Gongxuan

, p. 56028 - 56034 (2016)

Solvent-dispersible magnetite particles (Fe3O4) functionalized with dopamine (DA) and N,N-dimethylglycine (DMG) were successfully prepared by a one-pot synthesis method with environment-friendly materials. Then Pd0 nanoparticles were anchored onto the functionalized Fe3O4. The prepared materials were thoroughly characterized by TEM, XRD, XPS, FT-IR and VSM. The resultant magnetically recoverable Pd catalyst exhibited excellent catalytic activity for the C-C coupling reaction. In addition, this catalyst revealed high efficiency and stability during recycling stages. This work should be useful for the development and application of a magnetically recoverable Pd catalyst on the basis of green chemistry principles.

Tetramethylammonium phenyltrialkylborates in the photoinduced electron transfer reaction with benzophenone. Generation of alkyl radicals and their addition to activated alkenes

Polykarpov, Alexander Y.,Neckers, Douglas C.

, p. 5483 - 5486 (1995)

Photoinduced one electron oxidation of tetramethylammonium phenyltrialkylborates by the excited state of benzophenone in an acetonitrile/benzene solution containing an excess of activated alkene produces substantially more than one equivalent of the alkyl radicals. The corresponding adducts of alkyl radicals to the alkenes are produced in good yields. No phenyl radical adducts are observed.

Catalytic hydrogenation of liquid alkenes with a silica-grafted hydride pincer iridium(III) complex: Support for a heterogeneous mechanism

Rimoldi,Fodor,Van Bokhoven,Mezzetti

, p. 4575 - 4586 (2015)

The previously reported silica-grafted iridium(III) hydride complex [IrH(O-SBA-15)(POCOP)] (2), prepared by treating [IrH2(POCOP)] (1) (POCOP is 1,3-bis((di-tert-butylphosphino)oxy)benzene) with SBA-15 (mesoporous silica), hydrogenates liquid alkenes (1-decene, trans-5-decene, cyclohexene, styrene, and 4-phenyl-1-butene) at room temperature and under 1 atm H2. Internal alkenes react at a lower rate than the terminal ones. For the sake of comparison, the hydrogenation of the same substrates was studied with the homogeneous catalyst [IrH2(POCOP)] (1). The heterogeneous catalyst 2 hydrogenates 1-decene, cyclohexene, and 4-phenyl-1-butene faster than 1, whereas the opposite is true for styrene and trans-5-decene, which suggests that different active species are involved in the heterogeneous and homogeneous reactions. Catalysis by a truly heterogeneous species is supported by a series of "hot filtration tests". NMR spectroscopic studies showed that 2 does not undergo degrafting upon longer exposure to alkenes compared to ethene under hydrogenation conditions.

Efficient and facile Ar-Si bond cleavage by montmorillonite KSF: Synthetic and mechanistic aspects of solvent-free protodesilylation studied by solution and solid-state MAS NMR

Zafrani, Yossi,Gershonov, Eytan,Columbus, Ishay

, p. 7014 - 7017 (2007)

(Chemical Equation Presented) A facile and efficient method for the cleavage of the Ar-Si bond of various aryl trimethyl silanes is described. When adsorbed on montmorillonite KSF (mont KSF), these aryl-silanes readily undergo a solvent-free protodesilylation to the corresponding arenes at room temperature in excellent yields. This approach seems to be superior to the traditional mild methods (i.e., desilylation by TFA, TBAF, CsF), in terms of reaction yield, rate, and environmentally benign conditions. Some mechanistic studies using both solution and solid-state magic-angle spinning (SS MAS) 1H NMR are also presented.

Deep compositional understanding of TBA: AlCl3 ionic liquid for its applications

Bhakthavatsalam, Vishnupriya,Chandra, Sudeshna,Choudhury, Rudra Prosad,Lande, Sharad V.,Pradhan, Jeevan,Sakhalkar, Mangesh

, (2020)

Chloroaluminate ionic liquids (ILs) have been immensely used as homogeneous catalyst in Friedel-Crafts reaction. We have recently synthesized chloroaluminate ILs by reacting aluminium chloride with a hydrophobic neutral ligand i.e. tributylamine (TBA:AlCl3). The current study elaborates on the investigations of the composition of the ionic liquids at various stages of their formation. The ionic liquids were synthesized using various mole ratios of tributyl amine and aluminium chloride in range of 1:1 to 1:2.3, in presence of an aromatic solvent in a one pot reaction. Various characterization techniques like Mass spectrometry, 27Al Nuclear Magnetic Resonance, 31P Nuclear Magnetic Resonance and Fourier Transform Infrared spectroscopy were used to elucidate the formation of various moieties of the TBA:AlCl3 Ionic Liquid. This study also elaborates on the investigations of the cationic and anionic moieties and their structure-property relationship for various applications. Various Friedel-Crafts reaction of industrial importance were performed using the ionic liquid having (Al2Cl7)?moiety to assess its performance and compared with conventional processes. The synthesized products were characterised by sophisticated analytical techniques like 1H NMR, 13C NMR, FTIR, GC–MS, GC-FID, to name a few. This class of ionic liquids also have importance in various electrochemical applications like aluminium deposition and aluminium batteries.

Palladium-indium-indium(III) chloride-mediated allyl cross-coupling reactions using allyl acetates

Lee, Phil Ho,Seomoon, Dong,Lee, Kooyeon,Kim, Sundae,Kim, Hyunseok,Kim, Hyun,Shim, Eunkyong,Lee, Miae,Lee, Seokju,Kim, Misook,Sridhar, Madabhushi

, p. 1641 - 1645 (2004)

Allylindiums in situ generated by reductive transmetalation of π-allylpalladium(II) complexes, obtained from allyl acetates and palladium(0) catalyst, with indium and indium(III) chloride are effective nucleophilic cross-coupling partners in Pd-catalyzed allyl cross-coupling reactions with a variety of electrophilic cross-coupling partners.

Potassium hydroxide as a promoter for the potassium-metal catalyzed side-chain alkylation of toluene

Smith, R. Scott,Ihrman, Kryn G.,LeBlanc, Monica B.

, p. 333 - 343 (1990)

Potassium hydroxide acts synergistically with catalyst supports such as alumina, diatomaceous earth, or potassium carbonate to promote the potassium-metal catalyzed side-chain alkylation of toluene with propene.Carrying out the reaction with wet toluene to generate KOH in situ is a particularly effective method for promoting the reaction.The catalyst supports are not inert in the absence of the promoter, because they alter alkylation regiochemistry and increase the formation of methylindan by-products.As a mechanistic probe, the amounts of benzylpotassium that formare compared with propylation reaction rates.This is the first report concerning the amount of benzylpotassium that forms under side-chain alkylation conditions.From this and other data, a previously unrecognized mechanism for the promotion of side-chain alkylation is identified.

Higher-order zincates as transmetalators in alkyl-alkyl Negishi cross-coupling

McCann, Lucas C.,Hunter, Howard N.,Clyburne, Jason A. C.,Organ, Michael G.

, p. 7024 - 7027 (2012)

Negishi revisited: Higher-order alkyl zincates have been subjected to Negishi coupling with alkyl bromides. For the first time, coupling takes place in straight THF, i.e., without a salt additive and a high dielectric co-solvent. This provides evidence that it is the higher-order zincate that undergoes transmetalation to Pd, and not mono-anionic zincates or any of the other species present in the Schlenk equilibrium. Copyright

Huff,Perry

, p. 4277,4280 (1960)

Preparation of flavin-containing mesoporous network polymers and their catalysis

Arakawa, Yukihiro,Sato, Fumiaki,Ariki, Kenta,Minagawa, Keiji,Imada, Yasushi

, (2020)

Riboflavin tetramethacrylate (RFlTMA) was prepared as a flavin monomer and copolymerized with ethylene glycol dimethacrylate (EGDMA) under polymerization-induced phase separation conditions. The resulting flavin-containing mesoporous network polymer, poly(RFlTMA-co-EGDMA), was found to be a more effective catalyst than riboflavin tetraacetate (RFlTA), a soluble analogue, for aerobic hydrogenation of olefins despite its heterogeneity, which allowed for its multiple recovery and reuse through simple filtrations and washings without loss in catalytic activity. In addition, the polymeric flavin was demonstrated to be utilized also as an effective photocatalyst in the oxidation of benzyl alcohols.

Pillai,Pines

, p. 983 (1961)

Childs,Johnson

, p. 874 (1967)

-

Parham,Koncos

, p. 4034,4037 (1961)

-

Mononuclear calcium complex as effective catalyst for alkenes hydrogenation

Shi, Xianghui,Hou, Cuiping,Zhao, Lanxiao,Deng, Peng,Cheng, Jianhua

, p. 5162 - 5165 (2020)

Hydrogenolysis of the scorpionate-supported calcium benzyl complex [(TpAd,iPr)Ca(p-CH2C6H4-Me)(THP)] (TpAd,iPr= hydrotris(3-adamantyl-5-isopropyl-pyrazolyl)borate, THP = tetrahydropyran) (2-THP) afforded the mononuclear calcium hydrido complex [(TpAd,iPr)Ca(H)(THP)] (3). Under mild conditions (40 °C, 10 atm H2, 5 mol% cat.), complex3effectively catalyzed the hydrogenation of a variety of alkenes, including activated alkenes, semi-activated alkenes, non-activated terminal and internal alkenes. Mononuclear calcium unsubstituted alkyl complex [(TpAd,iPr)Ca{(CH2)4Ph}(THP)] (6), proposed as the catalytic hydrogenation intermediate, was isolated and structurally characterized.

Connecting Organometallic Ni(III) and Ni(IV): Reactions of Carbon-Centered Radicals with High-Valent Organonickel Complexes

Bour, James R.,Ferguson, Devin M.,McClain, Edward J.,Kampf, Jeff W.,Sanford, Melanie S.

, p. 8914 - 8920 (2019)

This paper describes the one-electron interconversions of isolable NiIII and NiIV complexes through their reactions with carbon-centered radicals (R?). First, model NiIII complexes are shown to react with alkyl and aryl radicals to afford NiIV products. Preliminary mechanistic studies implicate a pathway involving direct addition of a carbon-centered radical to the NiIII center. This is directly analogous to the known reactivity of NiII complexes with R?, a step that is commonly implicated in catalysis. Second, a NiIV-CH3 complex is shown to react with aryl and alkyl radicals to afford C-C bonds via a proposed SH2-type mechanism. This pathway is leveraged to enable challenging H3C-CF3 bond formation under mild conditions. Overall, these investigations suggest that NiII/III/IV sequences may be viable redox pathways in high-oxidation-state nickel catalysis.

-

Broadbent,H.S.,Seegmiller,D.W.

, p. 2347 - 2350 (1963)

-

Nickel-catalyzed cross-coupling reaction of Grignard reagents with alkyl halides and tosylates: Remarkable effect of 1,3-butadienes

Terao, Jun,Watanabe, Hideyuki,Ikumi, Aki,Kuniyasu, Hitoshi,Kambe, Nobuaki

, p. 4222 - 4223 (2002)

A new method for the cross-coupling reaction of Grignard reagents with alkyl chlorides, bromides, and tosylates has been developed by the use of a nickel catalyst in the presence of a diene as an additive. This reaction proceeds efficiently at 0-25 °C in THF using primary and secondary alkyl and aryl Grignard reagents. Nickel complexes bearing no phosphine ligands, such as NiCl2, Ni(acac)2, and Ni(COD)2, afford the coupling products in good yields, whereas NiCl2(PPh3)2 and NiCl2(dppp) were less effective. 1,3-Butadiene shows the highest activity as an additive for the present coupling reaction. A plausible reaction pathway was proposed. Copyright

Cyanophenylation of aromatic nitriles by terephthalonitrile dianion: Is the charge-transfer complex a key intermediate?

Panteleeva, Elena V.,Shchegoleva, Lyudmila N.,Vysotsky, Viktor P.,Pokrovsky, Leonid M.,Shteingarts, Vitalij D.

, p. 2558 - 2565 (2005)

The interaction of terephthalonitrile (1) dianion (12-) with benzonitrile (2) or m-tolunitrile (3) provides 4,4′-dicyanobiphenyl (4) or 4,4′-dicyano-2-methylbiphenyl (5), respectively. This result shows that dianion 12- serves as a reagent for p-cyanophenylation of aromatic nitriles. Based on experimental data, such as the chemical trapping of the 4,4′-dicyanobiphenyl precursor 4-cyano-1-(p-cyanophenyl)cyclohexa-2,5-dienyl anion (7) and the failure to obtain biphenyl 4 through the interaction of independently generated radical anions (RAs) 1- and 2-, as well as on the results of quantum-chemical calculations, a mechanism is suggested that includes a charge-transfer complex (CTC) between 12- and the aromatic nitrile as the key intermediate. The formation of this CTC is followed either by an intracomplex electron transfer (ET) and recombination of terephthalonitrile and aromatic nitrile RAs within an unequilibrated RA pair, or by synchronous ET and bonding of the ipso-carbon atom of terephthalonitrile with the p-carbon atom of the aromatic nitrile. The synthetic significance of p-cyanophenylation of arenecarbonitriles by dianion 12- is illustrated by the high yield of biphenyl product 4 (approx. 90%) as well as by the possibility of a one-pot synthesis of 4-butyl-4′-cyanobiphenyl and 4-butyl-4′-cyano-2-methylbiphenyl by successive treatment of dianion 12- with nitrile 2 or 3 and butyl bromide. Wiley-VCH Verlag GmbH & Co, KGaA, 69451 Weinheim, Germany, 2005.

Palladium-Catalyzed Synthesis of Arylamines from Aryl Halides. Mechanistic Studies Lead to Coupling in the Absence of Tin Reagents

Louie, Janis,Hartwig, John F.

, p. 3609 - 3612 (1995)

The reaction of aryl halides with secondary amines in the presence of silylamide base and tri-o-tolyphopshine palladium complexes gives arylamine products.This process provides a convenient method for performing these heterocross coupling reactions without the necessity for forming tin amides and disposing of tin halides.This reaction follows from a mechanistic analysis of the coupling reaction with tin amides and occurs as a result of the cleavage of palladium aryl halide dimers with secondary amines.

Cobalt-catalyzed alkene hydrogenation by reductive turnover

van der Puyl, Vincent,McCourt, Ruairi O.,Shenvi, Ryan A.

supporting information, (2021/04/19)

Earth abundant metal catalysts hold advantages in cost, environmental burden and chemoselectivity over precious metal catalysts. Differences in reactivity for a given metal center result from ligand field strength, which can promote reaction through either open- or closed-shell carbon intermediates. Herein we report a simple protocol for cobalt-catalyzed alkene reduction. Instead of using an oxidative turnover mechanism that requires stoichiometric hydride, we find a reductive turnover mechanism that requires stoichiometric proton. The reaction mechanism appears to involve coordination and hydrocobaltation of terminal alkenes.

Room temperature iron catalyzed transfer hydrogenation usingn-butanol and poly(methylhydrosiloxane)

Coles, Nathan T.,Linford-Wood, Thomas G.,Webster, Ruth L.

supporting information, p. 2703 - 2709 (2021/04/21)

Reduction of carbon-carbon double bonds is reported using a three-coordinate iron(ii) β-diketiminate pre-catalyst. The reaction is believed to proceedviaa formal transfer hydrogenation using poly(methylhydrosiloxane), PMHS, as the hydride donor and a bio-alcohol as the proton source. The reaction proceeds well usingn-butanol and ethanol, withn-butanol being used for substrate scoping studies. Allyl arene substrates, styrenes and aliphatic substrates all undergo reduction at room temperature. Unfortunately, clean transfer of a deuterium atom usingd-alcohol does not take place, indicating a complex catalytic mechanism. However, changing the deuterium source tod-aniline gives close to complete regioselectivity for mono-deuteration of the terminal position of the double bond. Finally, we demonstrate that efficient dehydrocoupling of alcohol and PMHS can be undertaken using the same pre-catalyst, giving high yields of H2within 30 minutes at room temperature.

Selective upgrading of biomass-derived benzylic ketones by (formic acid)–Pd/HPC–NH2 system with high efficiency under ambient conditions

Chen, Yuzhuo,Chen, Zhirong,Gong, Yutong,Mao, Shanjun,Ning, Honghui,Wang, Yong,Wang, Zhenzhen

, p. 3069 - 3084 (2021/11/16)

Upgrading biomass-derived phenolic compounds provides a valuable approach for the production of higher-value-added fuels and chemicals. However, most established catalytic systems display low hydrodeoxygenation (HDO) activities even under harsh reaction conditions. Here, we found that Pd supported on –NH2-modified hierarchically porous carbon (Pd/HPC–NH2) with formic acid (FA) as hydrogen source exhibits unprecedented performance for the selective HDO of benzylic ketones from crude lignin-derived oxygenates. Designed experiments and theoretical calculations reveal that the H+/H? species generated from FA decomposition accelerates nucleophilic attack on carbonyl carbon in benzylic ketones and the formate species formed via the esterification of intermediate alcohol with FA expedites the cleavage of C–O bonds, achieving a TOF of 152.5 h?1 at 30°C for vanillin upgrading, 15 times higher than that in traditional HDO processes (~10 h?1, 100°C–300°C). This work provides an intriguing green route to produce transportation fuels or valuable chemicals from only biomass under mild conditions.

Direct Deamination of Primary Amines via Isodiazene Intermediates

Berger, Kathleen J.,Driscoll, Julia L.,Yuan, Mingbin,Dherange, Balu D.,Gutierrez, Osvaldo,Levin, Mark D.

supporting information, p. 17366 - 17373 (2021/11/04)

We report here a reaction that selectively deaminates primary amines and anilines under mild conditions and with remarkable functional group tolerance including a range of pharmaceutical compounds, amino acids, amino sugars, and natural products. An anomeric amide reagent is uniquely capable of facilitating the reaction through the intermediacy of an unprecedented monosubstituted isodiazene intermediate. In addition to dramatically simplifying deamination compared to existing protocols, our approach enables strategic applications of iminium and amine-directed chemistries as traceless methods. Mechanistic and computational studies support the intermedicacy of a primary isodiazene which exhibits an unexpected divergence from previously studied secondary isodiazenes, leading to cage-escaping, free radical species that engage in a chain, hydrogen-atom transfer process involving aliphatic and diazenyl radical intermediates.

Amido PNP pincer complexes of palladium(II) and platinum(II): Synthesis, structure, and reactivity

Huang, Mei-Hui,Lee, Wei-Ying,Zou, Xue-Ru,Lee, Chia-Chin,Hong, Sheng-Bo,Liang, Lan-Chang

, (2020/12/15)

The synthesis of a series of divalent palladium and platinum complexes containing amido PNP pincer ligands of the type [N(o-C6H4PR2)2]? (R = Ph (1a), iPr (1b)) is reported. Metathetical reactions of [1a–b]PdCl or [1a–b]PtCl with a variety of alkyl Grignard reagents or LiHBEt3 in ethereal or arene solutions generate their corresponding alkyl or hydride complexes [1a]PdR1 (R1 = Me, Et, nBu), [1b]PdR1 (R1 = Me, Et, H), [1a]PtR1 (R1 = Me, Et, nBu, nHexyl, H), and [1b]PtR1 (R1 = Me, H). Although these organometallic complexes are all thermally stable, including those containing β-hydrogen atoms even at elevated temperatures, compounds [1a]PdH and [1b]PtR1 (R1 = Et, nBu, nHexyl) are not isolable due to facile decomposition. The stability and reactivity of these complexes are discussed. The chloro [1a]PdCl is a superior catalyst precursor to [1b]PdCl, [1a]PtCl, and [1b]PtCl in Kumada couplings, affording, for instance, n-butyl arenes nearly quantitatively. The X-ray structures of [1b]PtCl, [1b]PtMe, [1b]PdEt, [1a]PtnBu, [1b]PdH, and [1b]PtH are presented.

Process route upstream and downstream products

Process route

Conditions
Conditions Yield
styrene; triethylaluminum; zirconocene dichloride; at 22 - 23 ℃; for 12h;
With hydrogenchloride; Further byproducts given;
dibenzofuran
132-64-9,214827-48-2

dibenzofuran

cyclohexenone
930-68-7

cyclohexenone

2-Methylcyclopentanone
1120-72-5

2-Methylcyclopentanone

diphenylether
101-84-8

diphenylether

tert-butylbenzene
253185-03-4,253185-04-5

tert-butylbenzene

propane
74-98-6

propane

hexane
110-54-3

hexane

n-hexan-2-one
591-78-6

n-hexan-2-one

2-methyl-2-cyclopenten-1-one
1120-73-6

2-methyl-2-cyclopenten-1-one

n-pentylcyclohexane
4292-92-6

n-pentylcyclohexane

ethylbenzene
100-41-4,27536-89-6

ethylbenzene

1-butylbenzene
104-51-8

1-butylbenzene

pentylbenzene
538-68-1

pentylbenzene

cyclopentylbenzene
700-88-9

cyclopentylbenzene

4-Phenylphenol
92-69-3

4-Phenylphenol

dicyclohexyl ether
4645-15-2

dicyclohexyl ether

2-phenylpentane
2719-52-0

2-phenylpentane

1-pentenylbenzene
826-18-6

1-pentenylbenzene

2-butylcyclohexanone
1126-18-7

2-butylcyclohexanone

cyclohexylphenyl ether
2206-38-4

cyclohexylphenyl ether

2-cyclohexylphenol
119-42-6

2-cyclohexylphenol

3-methyl-phenol
108-39-4

3-methyl-phenol

ortho-cresol
95-48-7,77504-84-8

ortho-cresol

2-Phenylphenol
90-43-7,287950-96-3

2-Phenylphenol

cyclohexene
110-83-8

cyclohexene

cyclohexanol
108-93-0

cyclohexanol

Conditions
Conditions Yield
With hydrogen; 1 wtpercent K/1 wtpercent Pt/SiO2; at 425 ℃; under 5931.67 Torr;
Conditions
Conditions Yield
UZM-8HR; at 110 ℃; under 29203.9 Torr; Product distribution / selectivity;
1-phenylbutan-1,3-dione
93-91-4

1-phenylbutan-1,3-dione

ethylbenzene
100-41-4,27536-89-6

ethylbenzene

1-butylbenzene
104-51-8

1-butylbenzene

Conditions
Conditions Yield
With hydrogen; In 1,3,5-trimethyl-benzene; at 175 ℃; for 16h; under 37503.8 Torr; Temperature;
Conditions
Conditions Yield
With hydrogen; Rh-ceria-silica; at 225 ℃; under 760 Torr; Product distribution; Mechanism;
ethene
74-85-1

ethene

Isopropylbenzene
98-82-8

Isopropylbenzene

ethylbenzene
100-41-4,27536-89-6

ethylbenzene

phenylpropane
103-65-1

phenylpropane

1-butylbenzene
104-51-8

1-butylbenzene

Conditions
Conditions Yield
zeolite beta; cerium promoted; at 310 ℃; under 28443.9 Torr; Product distribution / selectivity; Super critical phase;
silicate; at 380 - 425 ℃; under 15514.9 - 20686.5 Torr; Product distribution / selectivity;
zeolite beta; lanthanum modified; at 310 ℃; under 28443.9 Torr; Product distribution / selectivity; benzene in super critical phase;
ethanol
64-17-5

ethanol

sodium ethanolate
141-52-6

sodium ethanolate

triethyl-phenethyl-phosphonium; bromide

triethyl-phenethyl-phosphonium; bromide

triethylphosphine oxide
597-50-2

triethylphosphine oxide

1-butylbenzene
104-51-8

1-butylbenzene

triethylphosphine
554-70-1

triethylphosphine

Conditions
Conditions Yield
beim anschliessenden Erhitzen unter Stickstoff;
p-Ethyl-n-butylbenzene
15181-08-5

p-Ethyl-n-butylbenzene

[U-<sup>14</sup>C<sub>6</sub>]benzene
82049-87-4

[U-14C6]benzene

ethylbenzene
100-41-4,27536-89-6

ethylbenzene

1-butylbenzene
104-51-8

1-butylbenzene

ethylbenzene-1-6<sup>14</sup>C

ethylbenzene-1-614C

butylbenzene-1-6<sup>14</sup>C

butylbenzene-1-614C

Conditions
Conditions Yield
aluminum tri-bromide; In hexane; at 40 ℃; Rate constant; Product distribution;
Conditions
Conditions Yield
decationized ferrisilicate; at 249.9 ℃; Product distribution; Mechanism; var. treatment of catalyst;
7%
0.6%
isopropyl alcohol
67-63-0,8013-70-5

isopropyl alcohol

Isopropylbenzene
98-82-8

Isopropylbenzene

ethylbenzene
100-41-4,27536-89-6

ethylbenzene

phenylpropane
103-65-1

phenylpropane

1-butylbenzene
104-51-8

1-butylbenzene

1,3-diisopropylbenzene
99-62-7

1,3-diisopropylbenzene

Conditions
Conditions Yield
With H-(Al)ZSM-5; at 196.9 ℃; for 1.58333h; Product distribution; Kinetics; various substrates under different reaction conditions;

Global suppliers and manufacturers

Global( 43) Suppliers
  • Company Name
  • Business Type
  • Contact Tel
  • Emails
  • Main Products
  • Country
  • Amadis Chemical Co., Ltd.
  • Business Type:Lab/Research institutions
  • Contact Tel:86-571-89925085
  • Emails:sales@amadischem.com
  • Main Products:29
  • Country:China (Mainland)
  • Chemwill Asia Co., Ltd.
  • Business Type:Manufacturers
  • Contact Tel:021-51086038
  • Emails:sales@chemwill.com
  • Main Products:56
  • Country:China (Mainland)
  • Kono Chem Co.,Ltd
  • Business Type:Other
  • Contact Tel:86-29-86107037-8015
  • Emails:info@konochemical.com
  • Main Products:82
  • Country:China (Mainland)
  • Antimex Chemical Limied
  • Business Type:Lab/Research institutions
  • Contact Tel:0086-21-50563169
  • Emails:anthony@antimex.com
  • Main Products:163
  • Country:China (Mainland)
  • Skyrun Industrial Co.,Ltd
  • Business Type:Lab/Research institutions
  • Contact Tel:0086-576-84610586
  • Emails:sales@chinaskyrun.com
  • Main Products:18
  • Country:China (Mainland)
  • Hangzhou Keyingchem Co.,Ltd
  • Business Type:Lab/Research institutions
  • Contact Tel:+86-571-85378921
  • Emails:sales@keyingchem.com
  • Main Products:105
  • Country:China (Mainland)
  • Debye Scientific
  • Business Type:Lab/Research institutions
  • Contact Tel:+85221376140
  • Emails:sales@debyesci.com
  • Main Products:13
  • Country:China (Mainland)
  • Bide Pharmatech Ltd
  • Business Type:Other
  • Contact Tel:021-61629020
  • Emails:sales@bidepharmatech.com
  • Main Products:1
  • Country:China (Mainland)
close
Post a RFQ

Enter 15 to 2000 letters.Word count: 0 letters

Attach files(File Format: Jpeg, Jpg, Gif, Png, PDF, PPT, Zip, Rar,Word or Excel Maximum File Size: 3MB)

1

What can I do for you?
Get Best Price

Get Best Price for 104-51-8
Post Buying Request Now
close
Remarks: The blank with*must be completed