Tandem enantioselective conjugate addition–Mannich reactions: efficient multicomponent assembly of dialkylzincs, cyclic enones and chiral N-sulfinimines
作者:José C. González-Gómez、Francisco Foubelo、Miguel Yus
DOI:10.1016/j.tetlet.2008.02.076
日期:2008.4
A convenient access to enantiopure beta-amino ketones through a multicomponent reaction of dialkyl zinc reagents, cyclic enones and chiral N-tert-butanesulfinimines is disclosed. Four diastereoisomers can be selectively obtained by the appropriate choice of the chiral ligand (L or ent-L) and the chiral N-sulfinimine (R-S or S-S). The protocol is particularly efficient when enolisable N-sulfinimines are used. (C) 2008 Elsevier Ltd. All rights reserved.