Osmium-Mediated Oxidative Cyclizations: A Study into the Range of Initiators That Facilitate Cyclization
作者:Timothy J. Donohoe、Katherine M. P. Wheelhouse (née Gosby)、Peter J. Lindsay-Scott、Gwydion H. Churchill、Matthew J. Connolly、Sam Butterworth、Paul A. Glossop
DOI:10.1002/asia.200900168
日期:2009.8.3
application of a wide range of starting materials to the osmium‐catalyzed oxidativecyclization reaction is described. Diols, hydroxy‐amides, hydroxy‐sulfonamides, and carbamates all cyclize in moderate to excellent yields to give cis‐tetrahydrofurans and pyrrolidines, depending upon the position of the heteroatoms in the starting materials. These cyclizations all proceed with near total selectivity for the