New Strategy for the Synthesis of Substituted Morpholines
作者:Matthew L. Leathen、Brandon R. Rosen、John P. Wolfe
DOI:10.1021/jo9007223
日期:2009.7.17
A four-step synthesis of cis-3,5-disubstituted morpholines from enantiomerically pure amino alcohols is described. The key step in the synthesis is a Pd-catalyzed carboamination reaction between a substituted ethanolamine derivative and an aryl or alkenyl bromide. The morpholine products are generated as single stereoisomers in moderate to good yield. This strategy also provides access to fused bicyclic