Synthesis of 4-alkyl-2-aryl-1,3-oxazole[5,4-d]pyrimidine-7(4H)-thiones and 6-alkyl-2-aryl-1,3-oxazole[5,4-d]pyrimidin-7(6H)-ones from 2-aroylamino-3,3-dichloroacrylonitriles
作者:A. P. Kozachenko、O. V. Shablykin、V. S. Brovarets
DOI:10.1134/s1070363212040226
日期:2012.4
amine, triethyl orthoformate, and hydrogen sulfide results in 4-substituted oxazole[5,4-d]pyrimidine-7(4H)-thione. The sequential reactions of the same reagents with sodium methylate, trifluoroacetic acid, triethyl orthoformate, and amines give rise to the 6-substituted oxazole[5,4-d]pyrimidin-7(4H)-one.
用过量的胺,原甲酸三乙酯和硫化氢顺序处理可及的2-芳基氨基-3,3-二氯丙烯腈,得到4-取代的恶唑[5,4 - d ]嘧啶-7(4H)-硫酮。相同试剂与甲醇钠,三氟乙酸,原甲酸三乙酯和胺的顺序反应产生6-取代的恶唑[5,4 - d ]嘧啶-7(4 H)-。