Photochemical Nitrogen Extrusion of 5-Amino-1-vinyl-4,5-dihydro-1H-1,2,3-triazoles. Formation of Unusual Pyrroles

Article abstract of DOI:10.1246/bcsj.56.533

Photolysis of 4-alkyl-5-amino-1-vinyl-4,5-dihydro-1H-1,2,3-triazoles gave not 3-alkylpyrroles, but unexpected 2-alkylpyrroles in 80-83percent yields. 1-Vinylaziridines were assumed as a possible intermediate of this unusual pyrrole formation.In the photol