As. Anslow et al., DEVELOPMENT OF AN ALANINE-DERIVED CHIRAL STABILIZED AZOMETHINE YLID BASED ON THE 5-(2'NAPHTHYL)MORPHOLIN-2-ONE TEMPLATE, Himia geterocikliceskih soedinenij, (10), 1995, pp. 1393-1401
A route to enantiomerically pure alpha-methyl functionalized proline d
erivatives have been presented, using a 1,3-dipolar cycloaddition stra
tegy based upon a homochiral 5-(2'-naphthyl) morpholin-2-one template.
A mild means of generating stabilized azomethine ylids using sonicati
on and Lewis acid catalysis have been developed, avoiding the use of e
xcessive temperatures.