Cyanoethylation of some urea derivatives

A Nováček

文献索引：Novacek,A. Collection of Czechoslovak Chemical Communications, 1967 , vol. 32, # 10 p. 3565 - 3571

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被引用次数: 5

摘要

Reaction of 4-substituted I-benzylidenesemicarbazide derivatives with acrylonitrile affords the corresponding 2-(2-cyanoethyl) derivatives which can be cyclised to the appropriate 5, 6- dihydrouracil derivatives. Acyl derivatives of ureas and substituted guanidines do not react with acrylonitrile; under analogous conditions, arylsulfonylureas, arylsulfonylsemicarbazides and arylsulfonylthiosemicarbazides split off the carbamoyl (thiocarbamoyl) group to afford ...