N-acylimino-substituted 2-oxa-7-azaspiro[4.4]nona-3,6,8-trienes in the synthesis of 3-(1H-1,2,4-triazol-3-yl)-3H-pyrrole-4-carbonitriles

Abstract

Reaction with phenylhydrazine of 3Н-pyrroles spirobound to a furan ring, N-acylimino-substituted 2-oxa-7-azaspiro[4.4]nona-3,6,8-trienes, occurs with a diasteroselective formation of previously unknown derivatives of 1,2,4-triazole: 5-amino-3-(5-alkyl-1-phenyl-1H-1,2,4-triazol-3-yl)-2-morpholin-4-yl-3H-pyrrole-4-carbonitriles.