Catalytic Enantioselective Conjugate Reduction of Lactones and Lactams
作者:Gregory Hughes、Masanari Kimura、Stephen L. Buchwald
DOI:10.1021/ja0351692
日期:2003.9.1
A dramatic acceleration of the enantioselective copper-catalyzed conjugatereduction of alpha,beta-unsaturated lactones, lactams, and esters is reported upon addition of alcohol additives. Good to excellent yields and enantioselectivities were realized using a catalyst generated in situ from CuCl(2).H(2)O, t-BuONa, p-tol-BINAP, and PMHS, and this methodology was applied to the synthesis of (-)-Paroxetine
The aerobic oxidation of pyrrolones catalyzed by Fe(OTf)3 to form reactive N-acyliminium ion intermediates that undergo nucleophilic additions to give the corresponding products is described.