Enantioselective aldol condensation of O-silyldienolates derived from alkyl-substituted 2,2-dimethyl-[1,3]-dioxin-4-ones
作者:Margherita De Rosa、Maria R. Acocella、Michele F. Rega、Arrigo Scettri
DOI:10.1016/j.tetasy.2004.07.020
日期:2004.10
Vinylogous aldol condensation of masked alkylated acetoacetates proceeds with good to excellent yields and enantiomeric excesses in the presence of a chiral Ti(O-i-Pr)(4)/BINOL complex. The presence of positive nonlinear effects are also pointed out. (C) 2004 Elsevier Ltd. All rights reserved.