72850-76-1Relevant articles and documents
Synthetic method of drug intermediate sulfur-containing nitrogen heterocyclic amine compound (by machine translation)
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Paragraph 0020; 0022; 0027; 0029; 0034; 0036, (2020/09/12)
To the invention, 4 -N-BOC -3 - isopropylthiazole is obtained by reaction of 2 - methyl -4 - oxo-pentanoic acid ethyl ester, dichloromethane and sulfonyl chloride as a raw material, and then -3 - N-BOC - 2 - isopropylthiazole and HCl are added in the presence of ethanol as a solvent to obtain -4 - N-BOC-n-isopropythiazol -5 - methyl 4 -isoprop -5 -aminothiazole in the presence of triethylamine, and a NaOH solution is added as a solvent and then subjected to extraction washing to obtain 4 -yl -5 -aminothiazolethyl acetate in the presence of trifluoroethanol as a solvent and ethanol as a solvent to obtain ethyl acetate 4 - 5-propyl thiazole -5 - formic acid ethyl ester with ethanol as a 4 - solvent and an aqueous solution of N-BOC-5 n-isopropylthiazole 4 - and the like 4 -5 . The method has the advantages of clear steps, less waste, high yield, raw material saving and easy operation. (by machine translation)
SUBSTITUTED AMINO-ACRYLCARBOXAMIDES AS KCNQ2/3 MODULATORS
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Paragraph 0716, (2014/06/11)
The invention relates to amino-arylcarboxamides, to pharmaceutical compositions containing these compounds and also to these compounds for use in the treatment and/or prophylaxis of pain and further diseases and/or disorders.
Xanthan sulfuric acid: An efficient bio-supported and recyclable solid acid catalyst for the synthesis of 2-aminothiazole-5-carboxylates and 2-aminoselenazole-5-carboxylates
Kuarm, Bowroju S.,Madhav, Janganati V.,Rajitha, Bhargavi
experimental part, p. 549 - 553 (2012/06/04)
An efficient method has been developed for the synthesis of 2-amino thiazole and selenazole-5-carboxylates from β-ketoesters, thiourea or seleno urea and N-bromo succinamide by using Xanthan sulfuric acid as a solid acid catalyst. The reaction work-up is