528-44-9Relevant articles and documents
Kinetics and process parameter studies in highly selective air oxidation of side-chain alkyl groups in picolines, 2-methylnaphthalene, and pseudocumene
Mukhopadhyay, Sudip,Chandalia, Sampatraj B.
, p. 227 - 231 (1999)
Picolines, 2-methylnaphthalene, and pseudocumene were oxidized by air in acetic acid medium. Process parameters and kinetics of the reaction were studied from the viewpoint of proces research and development. Use of lithium chloride as the promoter was worth considering for this oxidation to obtain a higher rate of reaction. At 170 °C and at a reactant concentration of 15% w/v, 52% conversion of β-picoline with a selectivity of 97% was achieved in 8 h.
Method for preparing trimellitic acid by means of catalytic oxidation of Anderson type heteropolyacid
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Page/Page column 0035-0044; 0047, (2018/09/08)
The invention discloses a method for preparing trimellitic acid by means of catalytic oxidation of Anderson type heteropolyacid. The method comprises the following steps: enabling 1, 2, 4-trimethylbenzene, used as a raw material, to be subjected to an oxidation reaction in a solvent in action of a catalyst, an oxidizing agent and an additive; after the oxidation reaction is completed, carrying outaftertreatment to obtain trimellitic acid, wherein the catalyst is Anderson structure heteropolyacid, the additive is a weakly alkaline substance, the solvent is fatty carboxylic acid, the oxidationreaction temperature is 80-150 DEG C, the reaction gage pressure is 1.0-5.0MPa, and the reaction time is 1-24h. The catalyst adopted by the method has very high reaction activity and specific selectivity and can be recycled; hydrogen peroxide, air or oxygen is used as the oxidizing agent, so that the cost is lowered, the generation of three wastes can be reduced, and the method is environmentallyfriendly; the method is mild in reaction conditions, simple and convenient to operate and high in product yield, thus being suitable for industrial production.
PRODUCTION OF TRI-METHYL BENZENE DERIVATIVES
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Page/Page column 22; 23, (2019/01/08)
The present invention relates to the production of tri-functional aromatic molecules from diformylfuran, in particular to the production of tri-methyl benzene derivatives such as for example trimellitic acid or 1,2,4-tri(aminomethyl)benzene from diformylfuran and its derivatives.