34524-96-4

Upstream product

• 64-19-7 acetic acid 
• 91-57-6 2-Methylnaphthalene 
• 103-45-7 acetic acid phenethyl ester 
• 130-15-4 [1,4]naphthoquinone 
• 7469-77-4 2-methylnaphthalen-1-ol 
• 7722-84-1 dihydrogen peroxide 
• 1612-30-2 menadiole sodium sulphate 
• 23177-71-1 2-methyl-1,4-naphthoquinone radical anion 
• 58-27-5 2-methyl-1,4-naphthoquinone radical anion 
• 97804-50-7 1,4,4a,9a-tetrahydro-4a-methyl-(1α,4α,4aα,9aα)-1,4-methanoanthracene-9,10-dione 
• 64648-85-7 2-Bromo-3-Methyl-1,1,4,4-tetramethoxy-1,4-dihydronaphthalene 
• 943232-38-0 (7R,11R)-3,7,11,15-tetramethyl-2-hexadecenyl bromide 
• 24000-38-2 1,4-dimethoxy-1,3-butadiene 
• 95-71-6 2-methylbenzene-1,4-diol 

Downstream Products

• 53370-44-8 1,4-bis-butyryloxy-2-methyl-naphthalene 
• 59962-61-7 2-(4-methoxyphenyl)-3-methylnaphthalene-1,4-dione 
• 6325-58-2 3-(1,4-dihydro-2-methyl-1,4-dioxo-naphthalen-3-yl-thio)propionic acid 
• 6531-35-7 2,3-dimethylanthraquinone 
• 26269-12-5 5-Hydroxy-2-methylamino-4-methylnaphtho<1,2-d>thiazole 
• 81466-82-2 4-methyl-2-(2-propenylamino)naphtho[1,2-d]thiazol-5-ol monohydrochloride 
• 54812-04-3 2‐cyclohexyl‐3‐methylnaphthalene‐1,4‐dione 
• 116425-06-0 2-methyl-3-(2’-phenylethyl)-1,4-naphthoquinone 
• 88007-98-1 2-methyl-3-(2-oxo-2-phenylethyl)naphthalene-1,4-dione 
• 130836-95-2 2-(3-Methyl-1,4-dioxo-1,4-dihydro-2-naphthyl)acetylfuran 
• 76055-26-0 6-benzyl-7,7a-dihydro-7,7a-dimethyldibenzofluorene-5,8,13-trione 
• 10315-37-4 2,5-dihydro-4-methyl-1H-1-benzazepine-2,5-dione 
• 56932-02-6 2-bromo-3-(bromomethyl)-<1,4>naphthoquinone 
• 50371-30-7 2-(bromomethyl)-1,4-naphthoquinone 

Relevant academic research and scientific papers

Oxidation of 2-methylnaphthalene with ozone

In the oxidation of 2-methylnaphthalene with ozone in acetic acid, the oxidant reacts mainly at the double bonds of the substituted aromatic ring to give peroxy compounds. In the presence of cobalt diacetate and sodium bromide, oxidation of the 2-methyl g

Fabrication, characterization and structure activity relationship of Co and Mn encapsulated on magnetic nanocomposite and its application in one-pot tandem synthesis of various tetrazoles and vitamin K3

Considering the importance of vitamin K3 in commercial pet foods, veterinary medicines, poultry, and some swine feed and also tetrazole derivatives in pharmacy, medicine, chemistry, petroleum, and military industry, design efficient catalytic systems are desirable. Herein, four magnetic nanocomposites (MNCs) of cobalt and manganese using metformin, 3-aminopropyltrimethoxysilane (L1) and 2-aminoethyl-3-aminopropyltrimethoxysilane (L2) were designed and constructed as an efficient and controllable catalytic system. The synthesized nanocomposites fully characterized by FT-IR, AAS, ICP-OES, BET, CHN elemental analysis, SEM, TEM, DLS, EDX, TGA, VSM, and XPS spectroscopy. The well-prepared magnetically recoverable nanocomposites were used in the synthesis of a wide derivatives of α-hydrazino tetrazoles (α-HyT), ferrocenyltetrazoles (FcT), arylaminotetrazoles (ArAT) and also vitamin K3. Besides, the effect of operating parameters, such as the amount of catalyst, nature of solvent, temperature and reaction time, metal nature, chain length and hydrophobicity properties of linkers, was studied in the catalytic efficiency of synthesized nanocatalysts. The best catalytic results were obtained in the following order: FS-L2-Met@Co(II) > FS-L2-Met@Mn(II) > FS-L1-Met@Co(II) > FS-L1-Met@Mn(II) due to their structural characteristics. In addition to high TOF, these magnetic nanocomposites are superior in easy, inexpensive, and commercially preparation, keeping the structural and magnetic characteristics, easy magnetically separation from the reaction medium, short reaction time, mild reaction condition, easy work-up, and reusability without any metal leaching in six runs. Graphical abstract: [Figure not available: see fulltext.]

Selective catalytic synthesis of bio-based terephthalic acid from lignocellulose biomass

_Efficient synthesis of bio-based chemicals from renewable lignocellulosic biomass is of great significance to promote the sustainable development of chemical industry. This work aims to demonstrate that terephthalic acid, a bulk high value chemical in petrochemical industry, can be synthesized using biomass. This novel controllable transformation process was started with the selective catalytic pyrolysis of sawdust biomass to form p-xylene intermediate. The high p-xylene yield of 23.4% was obtained using the Ga2O3/SiO2/HZSM-5 catalyst under the optimized reaction condition. Subsequently, the selective oxidation of the biomass-derived aromatic intermediates to terephthalic acid was realized with the metal oxide catalysts. The highest terephthalic acid yield of 72.8% with the terephthalic acid selectivity of 82.3% was achieved using the CoMn2O4@SiO2@Fe3O4 catalyst. Based on the study of the catalytic conversion of the model compounds and the catalyst characterizations, the reaction pathways and possible reaction mechanism have been proposed.

Mesostructured vanadia-alumina catalysts for the synthesis of vitamin K3

Liquid-phase selective oxidation of 2-methylnaphtalene to the vitamin K3 was investigated on a series of mesostructured vanadia-alumina catalysts with different V/Al ratios (0.1-1). They were prepared by the co-precipitation of ammonium metavanadate and aluminum nitrate at pH 5 and characterized by XRD, Raman, TG-DTA, elemental analysis and adsorption-desorption isotherms of nitrogen at -196 °C. The influence of the catalyst composition and calcination temperature upon the physico-chemical properties were closely investigated in relation with the catalytic performances. The result of this investigation indicated the catalysts containing a higher vanadium loading and calcined at 300 °C as the most active. Thus, the VAl07 catalyst led to a selectivity in vitamin K3 of 54% for a conversion of 2-methylnaphtalene of 76%. Such an activity corresponded to mixtures where metavanadate (Raman line at 940 cm-1) and decavanadate (Raman line at 990 cm-1) species were the most abundant. No lines of V2O5 (around 705 cm-1) were detected in the catalysts calcined below 600 °C.

Efficient oxidation of polycyclic aromatic hydrocarbons with H 2O2 catalyzed by 5,10,15-triarylcorrolatoiron (IV) chloride in ionic liquids

A simple and efficient oxidative system has been developed for the oxidation of polycyclic aromatic hydrocarbons with H2O2 catalyzed by 5,10,15-triarylcorrolatoiron (IV) chloride in mixed reaction media using imidazolium ionic liquids and organic solvents. The coordination effects of different organic solvents as well as anions of ionic liquids on the oxidation reactions have been examined.

Kinetics and mechanism of the oxidation of alkyl substituted phenols and naphthols with tBuOOH in the presence of supported iron phthalocyanine

2,3,5-Trimethylbenzoquinone (precursor of vitamin E) and 2-methylnaphthoquinone (vitamin K3) were obtained in good yields by oxidation of 2,3,6-trimethylphenol and 2-methyl-1-naphthol, respectively, with tBuOOH catalyzed by supported

Ceric ammonium nitrate (CAN) as oxidizing or nitrating reagent for organic reactions in ionic liquids

The reaction of ceric ammonium nitrate, (NH4)2[Ce(NO3)6] or CAN, with naphthalene and 2-methylnaphthalene in the ionic liquid 1-ethyl-3-methylimidazolium triflate showed that the reaction products are strongly d

9-Mesityl-10-methylacridinium: An efficient type II and electron-transfer photooxygenation catalyst

The visible-light irradiation of 9-mesityl-10-methylacridinium perchlorate 1 in the presence of monoalkenes and molecular oxygen leads to typical products of singlet oxygen addition (type II photooxygenation). The molecular probes 1-methylcyclohexene and limonene, respectively, result in hydroperoxide mixtures with a characteristic product pattern. A switch in the oxidative mechanism (electron-transfer photooxygenation) is observed for naphthalene derivatives as electron-rich acceptor molecules, revealing that the 9-mesityl-10- methylacridinium cation serves as a dual sensitizer with the capacity of efficient singlet oxygen formation and electron-transfer reaction.

Cycloadditions in mixed aqueous solvents: The role of the water concentration

We examined the kinetics of a series of cycloaddition reactions in mixtures of water with methanol, acetonitrile and poly(ethylene glycol) (MW 1000). The reactions include the Diels-Alder (DA) reaction between cyclopentadiene and N-n-butylmaleimide or acridizinium bromide, the retro-Diels-Alder (RDA) reaction of 1,4,4a,9a-tetrahydro-4a-methyl-(1α,4α,4aα,9aα)-1,4- methaneanthracene-9,10-dione and the 1,3-dipolar cycloaddition of benzonitrile oxide with N-n-butylmaleimide. Plots of logk vs the molar concentration or volume fraction of water are approximately linear, but with a characteristic break around 40 M water. This break, absent for the RDA reaction, is ascribed to hydrophobic effects. Comparison with aqueous mixtures of the more hydrophobic 1-propanol shows that these mixtures induce qualitatively similar effects on the rate, but that preferential solvation effects cause the mixtures of 1-propanol to exhibit a more complex behavior of logk on composition. The results are analyzed using the Abraham-Kamlett-Taft model. The solvent effects in aqueous mixtures are not satisfactorily described by this model. For some cycloadditions, small maxima in rate are observed in highly aqueous mixtures of alcohols. The origin of these maxima and the aforementioned breaks is most likely the same. Copyright

The products and kinetics of naphthalene and 2-methylnaphthalene oxidation with ozone in acetic acid

Products and kinetics of naphthalene and 2-methylnaphthalene ozonation in acetic acid were studied. It was shown that these compounds react with ozone mainly at the aromatic ring yielding peroxide products. In the oxidation of naphthalene, traces of 1,4-naphthoquinone and phthalic acid were found in addition to peroxides. In the case of 2-methylnaphthalene, the products of methyl group oxidation, 2-naphthoic acid and 2-naphthaldehyde, were also identified. According to the suggested oxidation scheme, ozone is consumed not only in the reaction with the substrate but also with its oxidative degradation products.