72511-60-5Relevant articles and documents
Vitamin B1-catalyzed aerobic oxidative esterification of aromatic aldehydes with alcohols
Chu, Xue-Qiang,Ge, Danhua,Luo, Xin-Long,Xu, Pei,Yu, Zi-Lun
supporting information, p. 30937 - 30942 (2021/11/19)
A straightforward aerobic oxidative esterification of aryl aldehydes with alcohols has been developed for the synthesis of substituted esters by employing vitamin B1 as a cost-effective, metal-free, and eco-friendly NHC catalyst. Air is used as a green terminal oxidant. The reaction is a useful addition to the existing NHC-catalytic oxidative esterification.
Water-soluble alkyne amide condensing agent as well as preparation method and application thereof
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Paragraph 0201-0206, (2021/02/10)
The invention discloses a water-soluble alkyne amide condensing agent and an application method of the water-soluble alkyne amide condensing agent in synthesis of amide, polypeptide, ester and thioester compounds. The alkyne amide condensing agent has good performance and can efficiently and conveniently promote formation of amide bonds and ester bonds, alpha-chiral centers of carboxylic acid is free of racemization in the reaction process, carboxylic acid activation and a subsequent amidation reaction can be performed spontaneously, and extra additives and catalysts are not needed. After amidation and esterification reactions are finished, reaction by-products and the excessive alkyne amide condensing agent can be converted into substances capable of being dissolved in water through treatment by a weakly-acidic aqueous solution, and then high-purity products can be obtained through extraction and/or recrystallization. The whole process is simple to operate, has the characteristics ofconvenience in purification, wide application range, economic performance and environmental protection, conforms to the direction of green chemistry in modernization, and has good application prospects.
Aromatic carboxylic acid trifluoro ethyl ester compound and its preparation method (by machine translation)
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Paragraph 0035-0037; 0045; 0051, (2018/10/04)
Aromatic carboxylic acid trifluoro ethyl ester compound and its preparation method. The present invention provides a kind of aromatic carboxylic acid trifluoroacetate ester compound and its preparation method, the method is that the aromatic carboxylic acid and nitrous acid tert-butyl and 2, 2, 2 - trifluoro ethylamine one-pot synthesis after reaction, to obtain the carboxylic acid trifluoroacetate ester compound. The method is simple in operation, mild reaction conditions, low cost, few by-products, high yield, can be aromatic carboxylic acid trifluoroacetate ester compound, not limited by substrate, in order to establish aromatic carboxylic acid trifluoroacetate ester compound library, for drug screening and new drug synthesis of the raw material sources. (by machine translation)