Intramolecular 1,3-Dipolar Cycloaddition to Ester Carbonyl of Azomethinylides Prepared from Aldimines and Difluorocarbene
作者:I. V. Voznyi、M. S. Novikov、A. F. Khlebnikov、J. Kopf、R. R. Kostikov
DOI:10.1023/b:rujo.0000034942.42778.e0
日期:2004.2
Azomethinylides generated by reaction of difluorocarbene with N-alkyl- and N-arylimines of O-acylated salycilaldehyde undergo intramolecular 1,3-dipolar cycloaddition to the ester carbonyl group forming regioselectively 2,5-epoxy-1,4-benzoxazepine derivatives.