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Synthesis of 4-alkyl-2-aryl-1,3-oxazole[5,4-d]pyrimidine-7(4)-thiones and 6-alkyl-2-aryl-1,3-oxazole[5,4-d]pyrimidin-7(6)-ones from 2-aroylamino-3,3- dichloroacrylonitriles
Kozachenko,Shablykin,Brovarets
scheme or table, p. 739 - 743 (2012/10/08)
The sequential treatment of accessible 2-aroylamino-3,3- dichloroacrylonitriles with excess of 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
