Synthesis of .beta.-Lactam Derivatives by Cycloaddition of 2-Methyleneazetidines with Azides
作者:Norbert De Kimpe、Marc Boeykens
DOI:10.1021/jo00097a021
日期:1994.9
In reaction with azides, substituted with electron-withdrawing groups, 2-methyleneazetidines underwent [3 + 2]-cycloaddition to, form intermediate triazolines. These intermediates spontaneously rearrange into four-membered cyclic amidines with concomitant loss of diazomethane.