A method of producing ª‰-imino-ª‡-arylhydrazono-butyronitriles or ª‰-amino-ª‡-arylazo-crotononitriles

摘要

Compounds of the general formulae FORM:1090769/C4-C5/1 wherein R is an aryl, haloaryl alkaryl or an alkoxy-aryl group are prepared by coupling a diazotized aromatic amine with a b -iminobutyronitrile or a b -amino-crotonitrile in a mixture of pyridine and water. Ice may be added and the products may be recrystallized from alcoholic ammonia.