Asymmetric Reductive Aldol-Type Reaction with Carbonyl Compounds Using Dialkyl Tartrate as a Chiral Ligand
作者:Motoyuki Isoda、Kazuyuki Sato、Yoriko Tokura、Atsushi Tarui、Masaaki Omote、Akira Ando
DOI:10.1248/cpb.c14-00223
日期:——
An asymmetric reductive aldol-type reaction of α,β-unsaturated esters with carbonyl compounds using Rh catalyst and Et2Zn was investigated. A chiral zinc complex from α,β-unsaturated ester was easily generated as the key intermediate from Et2Zn and Wilkinson's catalyst with diisopropyl L-(+)-tartrate to give a variety of enantioenriched β-hydroxy esters. The reaction was also applied to the intramolecular
研究了Rh催化剂和Et2Zn对α,β-不饱和酯与羰基化合物的不对称还原醛醇型反应。由Et2Zn和Wilkinson's催化剂与L-(+)-酒石酸二异丙酯形成的关键中间体很容易生成由α,β-不饱和酯形成的手性锌络合物,从而得到各种对映体富集的β-羟基酯。该反应还用于分子内还原性醛醇缩环化。