New Modes for the Osmium-Catalyzed Oxidative Cyclization
作者:Timothy J. Donohoe、Peter J. Lindsay-Scott、Jeremy S. Parker、Cedric K. A. Callens
DOI:10.1021/ol100046a
日期:2010.3.5
The osmium-catalyzedoxidativecyclization of amino alcohol initiators formally derived from 1,4-dienes is an effective method for the construction of pyrrolidines, utilizing a novel reoxidant (4-nitropyridine N-oxide = NPNO). The cyclization of enantiopure syn- and anti-amino alcohols gives rise to enantiopure cis- and trans-2,5-disubstituted pyrrolidines, respectively. Moreover, the cyclization of