A Novel, Stereoselective Silyl-Directed Stevens [1,2]-Shift of Ammonium Ylides
作者:John A. Vanecko、F. G. West
DOI:10.1021/ol025951r
日期:2002.8.1
"placeholder" during regioselective 1,2-migration with retention by the resulting spirocyclic ammonium ylide, and a hydroxyl surrogate for an eventual stereoselective Fleming-Tamao oxidation. This chemistry represents a novel use of the Stevens rearrangement and offers a short, enantioselective route to hydroxylated quinolizidines such as 3 from Boc-pyrrolidine.