- Ruthenium-on-Carbon-Catalyzed Facile Solvent-Free Oxidation of Alcohols: Efficient Progress under Solid-Solid (Liquid)-Gas Conditions
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A protocol for the ruthenium-on-carbon (Ru/C)-catalyzed solvent-free oxidation of alcohols, which proceeds efficiently under solid-solid (liquid)-gas conditions, was developed. Various primary and secondary alcohols were transformed to corresponding aldehydes and ketones in moderate to excellent isolated yields by simply stirring in the presence of 10% Ru/C under air or oxygen conditions. The solvent-free oxidation reactions proceeded efficiently regardless of the solid or liquid state of the substrates and reagents and could be applied to gram-scale synthesis without loss of the reaction efficiency. Furthermore, the catalytic activity of Ru/C was maintained after five reuse cycles.
- Park, Kwihwan,Jiang, Jing,Yamada, Tsuyoshi,Sajiki, Hironao
-
p. 1200 - 1205
(2021/12/29)
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- A General Approach to Intermolecular Olefin Hydroacylation through Light-Induced HAT Initiation: An Efficient Synthesis of Long-Chain Aliphatic Ketones and Functionalized Fatty Acids
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Herein, an operationally simple, environmentally benign and effective method for intermolecular radical hydroacylation of unactivated substrates by employing photo-induced hydrogen atom transfer (HAT) initiation is described. The use of commercially available and inexpensive photoinitiators (Ph2CO and NHPI) makes the process attractive. The olefin hydroacylation protocol applies to a wide array of substrates bearing numerous functional groups and many complex structural units. The reaction proves to be scalable (up to 5 g). Different functionalized fatty acids, petrochemicals and naturally occurring alkanes can be synthesized with this protocol. A radical chain mechanism is implicated in the process.
- Guin, Joyram,Paul, Subhasis
-
supporting information
p. 4412 - 4419
(2021/02/05)
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- METHOD FOR CONVERTING HYDROXYL GROUP OF ALCOHOL
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The present invention relates to: a method for converting a hydroxyl group of an alcohol; and a catalyst which makes the method possible. A method for converting a hydroxyl group of an alcohol according to the present invention is characterized by producing a compound represented by CH(R1)(R2)Nu (wherein R1, R2 and Nu are as defined below) by reacting an alcohol represented by CH(R1)(R2)OH (wherein each of R1 and R2 represents a hydrogen atom, an optionally substituted alkyl group, or the like) and a compound having an active proton, which is represented by H-Nu (wherein Nu represents a group represented by —CHX1-EWG1 or —NR3R4; X1 represents a hydrogen atom or the like; EWG1 represents an electron-withdrawing group; and each of R3 and R4 represents a hydrogen atom, an optionally substituted alkyl group, or the like), with each other in the presence of a complex of a group 7-11 metal of the periodic table and at least one solid base that is selected from the group consisting of layered double hydroxides, composite oxides and calcium hydroxide.
- -
-
Paragraph 0495-0496
(2021/02/19)
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- Highly productive α-alkylation of ketones with alcohols mediated by an Ir-oxalamidato/solid base catalyst system
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An Ir-oxalamidato complex in combination with a solid base (e.g., magnesium aluminometasilicate/Ca(OH)2) significantly improved the catalyst productivity in α-alkylation of methyl ketones with primary alcohols. Optimization through systematic variation of the oxalamidato ligand led to a practical turnover number (TON) of 10 000.40 000.
- Maeda, Hironori,Nara, Hideki,Shimizu, Hideo
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supporting information
p. 2772 - 2779
(2020/12/29)
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- Conversion of Aldehydes to Branched or Linear Ketones via Regiodivergent Rhodium-Catalyzed Vinyl Bromide Reductive Coupling-Redox Isomerization Mediated by Formate
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A regiodivergent catalytic method for direct conversion of aldehydes to branched or linear alkyl ketones is described. Rhodium complexes modified by PtBu2Me catalyze formate-mediated aldehyde-vinyl bromide reductive coupling-redox isomerization to form branched ketones. Use of the less strongly coordinating ligand, PPh3, promotes vinyl-to allylrhodium isomerization en route to linear ketones. This method bypasses the 3-step sequence often used to convert aldehydes to ketones involving the addition of pre-metalated reagents to Weinreb or morpholine amides.
- Swyka, Robert A.,Shuler, William G.,Spinello, Brian J.,Zhang, Wandi,Lan, Chunling,Krische, Michael J.
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supporting information
p. 6864 - 6868
(2019/05/10)
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- Selective Visible Light Aerobic Photocatalytic Oxygenation of Alkanes to the Corresponding Carbonyl Compounds
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The aerobic, selective oxygenation of alkanes via C-H bond activation is an important research challenge. Photocatalysis offers the potential for the introduction of additional concepts for such reactions. Visible light photoactive semiconductors such as bismuth oxyhalides (BiOX, X = Cl and Br) used in this research typically oxidize organic compounds through photocatalyzed formation of strongly oxidizing holes. The reactive oxygen species formed react with organic compounds in one-electron processes, leading to radical intermediates and nonselective oxidation. Such oxidation reactions generally lead to total oxidation. Here, impregnation of BiOX with a polyoxometalate, H5PV2Mo10O40, as a strong electron acceptor changed the reactivity of BiOX, leading to Mars-van Krevelen-type reactivity, that is, photoactivated oxygen donation from BiOX to the organic substrate followed by reoxidation by O2 and catalysis. This conclusion was supported by mechanistic studies involving isotope labeling studies. In this way, ethane was selectively oxidized to acetaldehyde in a flow reactor with a turnover number (24 h) of 415.
- Somekh, Miriam,Khenkin, Alexander M.,Herman, Adi,Neumann, Ronny
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p. 8819 - 8824
(2019/09/30)
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- Synthesis, structural characterization and C–H activation property of a tetra-iron(III) cluster
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A non-heme tetra-iron cluster, [Fe4 III(μ-O)2(μ-OAc)6(2,2′-bpy)2(H2O)2](NO3 ?)(OH?) (1), [OAc = acetate; 2,2′-bpy = 2,2′-bipyridine] containing oxido- and acetato-bridges was synthesized and structurally characterized by different spectroscopic methods including single crystal X-ray diffraction studies. X-ray crystal structure analysis of 1 revealed that tetra-iron complex was crystallized in monoclinic system with C2/c space group. Each of the Fe centres in 1 was found to exist in octahedral geometry and interconnected by oxido- and acetato-bridges. Bond valence sum (BVS) calculation recommended the existence of iron centres in +3 oxidation state. Variable temperature magnetic measurement authenticated the dominating antiferromagnetic ordering among the iron centres in the solid state of 1. This tetra-iron cluster was also evaluated as an efficient catalytic system towards the oxidation of both linear & cyclic alkanes without production of primary C–H bond oxidation products. Oxidation of secondary C–H bonds attested the formation of both the corresponding alcohols & ketones in 27–900 TONs. The tetra-iron catalytic system with Alcohol/Ketone values 0.2–1.7 indicated the involvement of freely diffusing carbon-centered radicals rather than metal based oxidant.
- Dey, Dhananjay,Patra, Moumita,Al-Hunaiti, Afnan,Yadav, Hare Ram,Al-mherat, Afrah,Arar, Sharif,Maji, Milan,Choudhury, Angshuman Roy,Biswas, Bhaskar
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p. 220 - 226
(2019/01/05)
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- Rational Design of a Metallocatalytic Cavitand for Regioselective Hydration of Specific Alkynes
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The synthesis of a functionalized supramolecular cavitand with inwardly oriented AuI and P=O moieties was explored, including its catalytic proclivity in the selective hydration of internal alkynes. The cavitand works as a supramolecular flask device: AuI coordinates to the triple bond, the P=O moiety connects with a H2O molecule, and the cavity favors folding of a single alkynyl side chain. Several tests of different substrate patterns indicated that the cavity was substrate specific, similar to enzymatic catalysis.
- Endo, Naoki,Inoue, Mami,Iwasawa, Tetsuo
-
supporting information
p. 1136 - 1140
(2018/03/13)
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- From DNA to catalysis: A thymine-acetate ligated non-heme iron(III) catalyst for oxidative activation of aliphatic C-H bonds
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A non-heme, iron(iii)/THA(thymine-1-acetate) catalyst together with H2O2 as an oxidant is efficient in oxidative C-H activation of alkanes. Although having a higher preference for tertiary C-H bonds, the catalyst also oxidizes aliphatic secondary C-H bonds into carbonyl compounds with good to excellent conversions. Based on the site selectivity of the catalyst and our mechanistic studies the reaction proceeds via an Fe-oxo species without long lived carbon centered radicals.
- Al-Hunaiti, Afnan,R?is?nen, Minn?,Repo, Timo
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p. 2043 - 2046
(2016/02/05)
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- Mn(ii) acetate: An efficient and versatile oxidation catalyst for alcohols
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A homogeneous catalytic system consisting of Mn(ii) acetate (18 μmol), tert-butylhydroperoxide (2.5 mmol), acetonitrile (1.5 mL) and trifluoroacetic acid (91 μmol) was developed for efficient and selective oxidation of various alcohols (1 mmol). The system yielded good to quantitative conversions (42-100%) of various secondary alcohols, such as 2-octanol, fenchyl alcohol and borneol, to their corresponding ketones. Primary alcohols, for example 1-octanol and differently substituted benzyl alcohols, were mainly converted to their corresponding carboxylic acids. Studies with a selection of hydrocarbons, tertiary amines and a cyclic ether isochroman showed that besides alcohols, other substrates can be oxidised as well.
- Raeisaenen, Minna T.,Al-Hunaiti, Afnan,Atosuo, Elisa,Kemell, Marianna,Leskelae, Markku,Repo, Timo
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p. 2564 - 2573
(2014/07/22)
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- Copper-catalyzed aerobic oxidative functionalization of C-H bonds of alkanes in the presence of acetaldehyde under mild conditions
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Copper-catalyzed oxidative functionalization of C-H bonds of alkanes with molecular oxygen has been performed in the presence of Cu(OAc)2 catalyst and acetaldehyde in acetonitrile at 70 C with extremely high turn-over numbers.
- Hayashi, Yukiko,Komiya, Naruyoshi,Suzuki, Ken,Murahashi, Shun-Ichi
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p. 2706 - 2709
(2013/06/26)
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- H2O2-oxidation of alcohols promoted by polymeric phosphotungstate catalysts
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A novel polymeric phosphotungstate catalyst bearing a poly(ethylene oxide-pyridinium) matrix was developed that efficiently promoted oxidation of a variety of alcohols, including highly sterically demanding neopentyl alcohols, with hydrogen peroxide, to afford the corresponding carbonyl compounds in up to quantitative yield. The chemoselective oxidation of sterically hindered secondary alcohols in the presence of primary alcohols was achieved. The catalyst could be reused four times without any loss of catalytic activity.
- Yamada, Yoichi M.A.,Jin, Chung Keun,Uozumi, Yasuhiro
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supporting information; experimental part
p. 4540 - 4543
(2010/12/25)
-
- Regio- And stereoselective subterminal hydroxylations of n-decane by fungi in a liquid-liquid interface bioreactor (L-L IBR)
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This article may be the first report to describe the excellent regio- and stereoselective subterminal hydroxylations of n-alkane with microorganisms. Approximately 2000 fungal strains were screened for the regioselective hydroxylation of n-decane with a s
- Oda, Shinobu,Isshiki, Kunio,Ohashi, Shinichi
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experimental part
p. 105 - 109
(2009/04/10)
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- Catalytic deprotection of acetals in basic solution with a self-assembled supramolecular "nanozyme"
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(Formula Presented) Changing on the inside: Acetals are a commonly used protecting groups for aldehydes and ketones in organic synthesis because of their ease of installation and resistance to cleavage in neutral or basic solution. A self-assembled supramolecular assembly has been shown to catalyze the hydrolysis of acetals and ketals in basic solution (see scheme).
- Pluth, Michael D.,Bergman, Robert G.,Raymond, Kenneth N.
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p. 8587 - 8589
(2008/09/18)
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- Reversal of regioselectivity in Wacker-Type oxidation of simple terminal alkenes and its paired interacting orbitals (PIO) analysis
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The trend of aldehyde selectivity observed in the oxidation of 1-decene with PdCl2(CH3CN)2/CuCl2 in alcohol (ROH) under O2 can be evaluated by the overlap populations for Pd-C and C-OR bonds in the oxypalladation step with paired interacting orbitals (PIO) analysis. The use of t-BuOH affords decanal in 84% regioselectivity.
- Ogura, Toshihiko,Kamimura, Ryuichiro,Shiga, Akinobu,Hosokawa, Takahiro
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p. 1555 - 1557
(2007/10/03)
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- Nitrous oxide oxidation catalyzed by ruthenium porphyrin complex
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Dinitrogen oxide was employed as a clean oxidant for various oxidations in the presence of a catalytic amount of dioxoruthenium tetramesitylporphyrin complex (Ru(tmp)(O)2). A variety of olefins, secondary alcohols, and benzyl alcohols were smoothly oxidized to the corresponding epoxides, ketones, and aldehydes in high yields. In the oxidation of 9,10-dihydroanthracene derivatives, the competitive reactions affording anthraquinones and anthracenes could be regulated by the reaction conditions. At a high temperature (200°C), anthraquinones were selectively produced, while the anthracenes were selectively produced by the addition of sulfuric acid.
- Tanaka, Hirotaka,Hashimoto, Kentaro,Suzuki, Kyosuke,Kitaichi, Yasunori,Sato, Mitsuo,Ikeno, Taketo,Yamada, Tohru
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p. 1905 - 1914
(2007/10/03)
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- Oxidation of secondary alcohols with phenyltrimethylammonium tribromide in the presence of a catalytic amount of antimony(III) bromide or copper(II) bromide
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The oxidation of alcohols was carried out with phenyltrimethylammonium tribromide in the presence of a catalytic amount of SbBr3 or CuBr2. 1,2-Diols, such as hydrobenzoin, were converted into 1,2-diketones or α-ketols without oxidative cleavage of the glycol C-C bond at room temperature. A variety of secondary alcohols were also oxidized to the corresponding carbonyl compounds in a chemoselective manner.
- Sayama, Shinsei,Onami, Tetsuo
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p. 2369 - 2373
(2007/10/03)
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- Synthesis of aliphatic ketones from allylic alcohols through consecutive isomerization and chelation-assisted hydroacylation by a rhodium catalyst
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Abstract: An allylic alcohol, utilized as a precursor for an aliphatic aldehyde, reacted with olefins to afford aliphatic ketones in the presence of RhCl(PPh3)3, 2-amino-4-picoline, aniline, and benzoic acid through a tandem reaction of an isomerization and a chelation-assisted hydroacylation.
- Lee, Dae-Yon,Moon, Choong Woon,Jun, Chul-Ho
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p. 3945 - 3948
(2007/10/03)
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- Nitrous oxide oxidation of secondary and benzylic alcohols using ruthenium complex catalyst
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Catalytic N2O oxidation of various secondary and benzylic alcohols using a ruthenium porphyrin complex is presented. Both secondary and benzylic alcohols were smoothly consumed to give the corresponding ketones and aldehydes in high yields. Nitrous oxide (N2O) is expected to be a new terminal oxidant producing only dinitrogen gas as the only by-product to provide a less wasteful process.
- Hashimoto, Kentaro,Kitaichi, Yasunori,Tanaka, Hirotaka,Ikeno, Taketo,Yamada, Tohru
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p. 922 - 923
(2007/10/03)
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- Ruthenium-catalyzed oxidation of alkanes with tert-butyl hydroperoxide and peracetic acid
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The ruthenium-catalyzed oxidation of alkanes with tert-butyl hydroperoxide and peracetic acid gives the corresponding ketones and alcohols highly efficiently at room temperature. The former catalytic system, RuCl2(PPh3)3-t-BuOOH, is preferable to the oxidation of alkylated arenes to give aryl ketones. The latter system, Ru/C-CH3CO3H, is suitable especially for the synthesis of ketones and alcohols from alkanes. The ruthenium-catalyzed oxidation of cyclohexane with CH3CO3H in trifluoroacetic acid/CH2Cl2 at room temperature gave cyclohexyl trifluoroacetate and cyclohexanone with 90% conversion and 90% selectivity (85:15). The mechanistic study indicates that these catalytic oxidations of hydrocarbons involve oxo-ruthenium species as key intermediates.
- Murahashi,Komiya,Oda,Kuwabara,Naota
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p. 9186 - 9193
(2007/10/03)
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- Catalytic activation of C-H and C-C bonds of allylamines via olefin isomerization by transition metal complexes
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(matrix presented) The metal-catalyzed reaction of olefins with allylamines bearing coordination sites (2-pyridyl groups) was studied. With Ru3(CO)12 as catalyst, activation of C-H bonds led to the formation of ketimines that were hydrolyzed to give asymmetric ketones. With [(C8H14)2RhCl]2, both C-H and C-C bonds were activated and symmetric ketones were formed on hydrolysis. The reaction involves double bond migration of the allylamine to form an aldimine.
- Jun, Chul-Ho,Lee, Hyuk,Park, Jae-Bum,Lee, Dae-Yon
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p. 2161 - 2164
(2008/02/11)
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- One pot deprotective oxidation of O-allyl ethers using 70% tert-Butyl Hydroperoxide and catalytic CrO3
-
Deprotection of O-allyl ether and in situ oxidation of the liberated free hydroxy group to carbonyl functionality is achieved in one pot using 70% tert-Butyl Hydroperoxide and catalytic CrO3. Other sensitive groups viz., -OTHP, -OTBDMS and -OMOM ethers survive under the reaction conditions.
- Chandrasekhar,Mohanty, Pradyumna K.,Ramachander
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p. 1063 - 1064
(2007/10/03)
-
- Alkane oxidation with manganese substituted polyoxometalates in aqueous media with ozone and the intermediacy of manganese ozonide species
-
Manganese substituted polyoxometalates (POMs), such as Li12[MnII2ZnW(ZnW9O 34)2] were effective catalysts for the oxidation of alkanes to ketones with ozone in an aqueous reaction medium; a green intermediate compound observable by UV-VIS and ESR at -78 °C was postulated to be a reactive manganese ozonide species.
- Neumann, Ronny,Khenkin, Alexander M.
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p. 1967 - 1968
(2007/10/03)
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- Ruthenium-Catalyzed Oxidation of Alkanes with Peracids
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The ruthenium-catalyzed oxidation of alkanes with peracids under mild conditions gives the corresponding ketones and alcohols highly efficiently.Similar treatment of alkanes in trifluoroacetic acid gives alkyl trifluoroacetates.
- Murahashi, Shun-Ichi,Oda, Yoshiaki,Komiya, Naruyoshi,Naota, Takeshi
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p. 7953 - 7956
(2007/10/02)
-
- STUDY OF THE TELOMERIZATION OF ETHYLENE AND 1-HEXENE BY BUTANAL THROUGH COMPARATIVE KINETICS
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The reaction of ethylene and 1-hexene with butanal was studied using tertiary butyl peroxide initiation at 140 deg C and a hydrostatic pressure in the range of 250-450 kg/cm2.Based on calculated values of the rate constant ratios for the addition reaction of the n-C3H7CO radical to ethylene (k0e) and 1-hexene (k0h), we obtained k0e/l0h = 3.7 as the rate constant of the decarbonylation reaction of this radical (kd).The partial chain transfer constants were calculated for the ethylene-butanal system as Cn: C1 = 1.0 +/- 0.16; C2 = 1.0 +/- 0.14; C3 = 0.9 +/- 0.23.The results obtained indicate the nucleophilic character of the n-C3H7CO radical in these reactions.
- Orlova, S. V.,Ikonnikov, N. S.,Terent'ev, A. B.
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p. 1222 - 1225
(2007/10/02)
-
- Catalysis of Pd(II)-catalyzed acetalization of alkenes with diols
-
Alkenes bearing electron-withdrawing substituents are catalytically acetalized with 1,3-propanediol only by the use of PdCl2(MeCN)2 catalyst under O2 atmosphere. When a combination of BiCl3 and LiCl is used as co-catalyst, the acetalization proceeds effectively. These results indicate that a hydroperoxopalladium(II) species is most likely an active catalyst in the present reaction.
- Hosokawa,Ataka,Murahashi
-
p. 166 - 169
(2007/10/02)
-
- Improved Method for the Wacker Oxidation of Cyclic and Internal Olefins
-
An improved method for palladium(II)-catalyzed Wacker oxidation of cyclic and internal olefins is described.Addition of perchloric, sulfuric, nitric, or tetrafluoroboric acid to a chloride free solution of the Pd(II) catalyst gives rate enhancements of up to a factor of 50.The oxidation of cyclohexene to cyclohexanone, which was previously reported to give a 97percent yield after 5 h, is now accomplished in 1 h quantitatively, with only one-third of the amount of Pd(II) used.Limitations of the method are also discussed.
- Miller, D. G.,Wayner, D. D. M.
-
p. 2924 - 2927
(2007/10/02)
-
- 1,5-DIHYDRO-3H-2,4-BENZODIOXEPINE AS A NOVEL CARBONYL PROTECTING GROUP
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A novel and facile protective group for carbonyl compounds as 1,5-dihydro-3H-2,4-benzodioxepine, which can be cleaved smoothly in a nonacidic manner by catalytic hydrogenolysis, has been demonstrated.
- Machinaga, Nobuo,Kibayashi, Chihiro
-
p. 4165 - 4168
(2007/10/02)
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- A New Synthetic Method for the Preparation of Ketones by Denitration of α-Nitro Ketones
-
The sequence of acylation of nitroalkanes and subsequent denitration of the resulting α-nitro ketones provides a new and general method for the preparation of ketones.
- Ono, Noboru,Fujii, Masayuki,Kaji, Aritsune
-
p. 532 - 535
(2007/10/02)
-
- Conditions for the Microbial Oxidation of Various Higher Alcohols in Isooctane
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The substrate specifities and reaction conditions for the microbial oxidation of higher alcohols in isooctane were investigated using Rhodococcus equi cells grown on n-tetradecane as the sole carbon source.Primary alcohols, C4ca.C14 (even numbers), were oxidized to the corresponding carboxylic acids, with which the substrate alcohols further combined to form esters, and various kinds of secondary decanols were oxidized to the corresponding ketones, suggesting that the substrate specifities of R. equi were not so restricted in isooctane.As to the the reaction conditions, water was positively required for the oxidation of higher alcohols such as 1-tetradecanol in organic solvents such as isooctane, although the amount of water required represented only a small portion of the reaction mixture.On the other hand, ester formation took place in isooctane practically free from water, and the rates of ester formation from 1-tetradecanol and tetradecanoic acid by dried cells increased with an increase in temperature up to 70 deg C in isooctane, while ester formation hardly occured at deg C when intact cells were used in place of dried cells.It was thus suggested that microbial ester formation is less susceptible to the thermal inactivation in the absence of water than in the presence.
- Ueda, Makoto,Mukataka, Sukekuni,Sato, Seigo,Takahashi, Joji
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p. 1533 - 1538
(2007/10/02)
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- Mild and Effective Removal of Dithioketal Protecting Groups by Triarylamine Cation Radicals as Homogeneous Electron Transfer Agents
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1,3-Dithianes 2 can effectively be converted into the parent carbonyl compounds 7 by a very mild oxidative procedure using tri-p-tolylammoniumyl (1a+.) or tris(4-bromophenyl)ammoniumyl (1b+.) as homogeneous electron transfer agents.The yields are equally good for the cleavage by stoichiometric amounts of the triarylammoniumyl hexachloroantimonates as well as for the indirect electrochemical procedure using catalytic amounts of the triarylamine together with electrochemical generation and regeneration of the cation radicals.In the case of 1,3-dithiolanes 3 the application of stoichiometric amounts of tris(4-bromophenyl)ammoniumyl hexa chloroantimonate is very effective while during the indirect electrochemical procedure the deposition of polymeric sulfur compounds onto the electrode surface has to be prevented by the use of a flowthrough cell.In all cases the conditions for the cleavage are so mild that hydroxy functions and double bonds are tolerated without problems.
- Platen, Martin,Steckhan, Eberhard
-
p. 1679 - 1694
(2007/10/02)
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- ULTRASONIC ACCELERATION OF OXIDATION WITH SOLID POTASSIUM PERMANGANATE
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Ultrasonic irradiation facilitates heterogeneous oxidation of secondary alcohols to ketones with solid potassium permanganate in nonpolar organic solvents.
- Yamawaki,Junko,Sumi, Shinjiro,Ando, Takashi,Hanafusa, Terukiyo
-
p. 379 - 380
(2007/10/02)
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- A NEW SYNTHESIS OF KETONES FROM 1,2-DIMETHOXYETHENYLLITHIUM, ORGANOBORANES, AND ALKYL FLUOROSULFONATES
-
The reaction of alkyl fluorosulfonates with lithium 1,2-dimethoxyethenyltrialkylborates readily prepared from organoboranes gives corresponding ketones in good yields.
- Yogo, Toshinobu,Koshino, Junji,Suzuki, Akira
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p. 1059 - 1060
(2007/10/02)
-
- AN EFFECTIVE AND MILD ELECTROCATALYTIC PROCEDURE FOR THE REMOVAL OF 1,3-DITHIANE PROTECTING GROUPS
-
The 1,3-dithiane protecting group can effectively be removed by indirect electrochemical oxidation under extremely mild conditions, if catalytic amounts of tris(p-tolyl) amine are used as homogeneous electron transfer agents.
- Platen, Martin,Steckhan, Eberhard
-
p. 511 - 514
(2007/10/02)
-