Reaction of difluorocarbene with 2H-azirines: generation and transformations of strained azomethine ylides — aziriniodifluoromethanides
作者:A. F. Khlebnikov、M. S. Novikov、A. A. Amer
DOI:10.1023/b:rucb.0000041305.50408.ed
日期:2004.5
The reaction of difluorocarbene with azirines affords a new type of azomethine ylides, viz., strained aziriniodifluoromethanides. 1,3-Dipolar cycloadditions of ylides derived from 2-unsubstituted 3-arylazirines to dimethyl acetylenedicarboxylate and aldehydes give derivatives of 2,2-difluoro-1-azabicyclo[3.1.0]hex-3-ene-3,4-dicarboxylic acids and 1,4-oxazin-3(4H)-ones, respectively. Ylides derived