Isocyanide based multicomponent reactions of oxazolidines and related systems
作者:Robert W. Waller、Louis J. Diorazio、Brian A. Taylor、William B. Motherwell、Tom D. Sheppard
DOI:10.1016/j.tet.2010.05.083
日期:2010.8
aldehydes/ketones, isocyanides and carboxylic acids. The reaction of oxazolidines without a nitrogen substituent was found to give either the expected Ugi products or the N-acyloxyethylamino acid amides depending on the choice of reaction conditions. Optimised reaction conditions were also developed for the ring-expansion of oxazolidines to morpholin-2-ones via reaction with an isocyanide followed by hydrolysis