Reactions of N-(2,2-Dichloro-1-cyanoethenyl)-N '-methyl(phenyl)ureas with Aliphatic Amines

摘要

Novel derivatives of 3,3-dichloroprop-2-enenitrile containing methylurea or phenylurea fragments have been synthesized. The obtained N-(2,2-dichloro-1-cyanoethenyl)-N'-methyl(phenyl) ureas undergo intramolecular cyclization in the presence of triethylamine to form 4-(dichloromethylidene)-5-imino-1-methyl (phenyl) imidazolidin-2-ones. Reactions of N-(2,2-dichloro-1-cyanoethenyl)-N'-methylurea with aliphatic amines have afforded 4-(alkylamino)-4-(dichloromethyl)-5-imino-1-methylimidazolidin-2-ones.