Further Studies of Intramolecular Michael Reactions of Nitrosoalkenes for Construction of Functionalized Bridged Ring Systems
作者:Praveen Kumar、Puhui Li、Ilia Korboukh、Tony L. Wang、Hemant Yennawar、Steven M. Weinreb
DOI:10.1021/jo1024392
日期:2011.4.1
A wide variety of stabilized carbanions have been found to participate as nucleophiles in intramolecular Michael-type conjugateadditions to in situ generated nitrosoalkenes to form bridged carbocyclic systems. The vinylnitroso platforms for these cyclizations have been prepared via two key steps involving ring-closing metathesis of vinyl chlorides and regioselective conversion of vinyl chlorides to