General and Highly Efficient Synthesis of 2-Alkylideneazetidines and β-Lactams via Copper-Catalyzed Intramolecular N-Vinylation
作者:Hongjian Lu、Chaozhong Li
DOI:10.1021/ol062274i
日期:2006.11.9
[GRAPHICS]N-Tosyl-3-halo-3-butenylamines underwent efficient Ullmann-type coupling with the catalysis of Cul/N/N'-dimethylethylenediamine to afford 2-alkylideneazetidines, which could be readily converted to the corresponding, beta-lactams by oxidation with O-3.