Construction of Bicyclo[3.2.1]octanes with Four Stereogenic Centers by Organocatalytic Domino Michael/Aldol Reaction
作者:A. Lefranc、L. Gremaud、A. Alexakis
DOI:10.1021/ol502171h
日期:2014.10.17
An enantio- and diastereoselective organocatalytic domino Michael/Aldol reaction for the direct preparation of synthetically and medicinally relevant bicyclo[3.2.1]octane derivatives with four stereogenic centers, including two quaternary carbons, has been described. The reaction tolerates a large variety of substituents on β,γ-unsaturated 1,2-ketoesters and cyclic 1,3-ketoesters. It allows for the
描述了一种对映和非对映选择性的有机多米诺骨牌Michael / Aldol反应,用于直接制备具有四个立体生成中心(包括两个季碳原子)的合成和医学上相关的双环[3.2.1]辛烷衍生物。该反应可耐受β,γ-不饱和1,2-酮酸酯和环状1,3-酮酸酯上的多种取代基。它可以形成各种双环[3.2.1]辛烷,产率高(53–98%),非对映选择性(1:1至5:1 dr)和对映选择性(最高95:5 ee)。