Antibody-Catalyzed Asymmetric Intramolecular Michael Addition of Aldehydes and Ketones to Yield the Disfavored Cis-Product
作者:Roy Weinstain、Richard A. Lerner、Carlos F. Barbas、Doron Shabat
DOI:10.1021/ja0536825
日期:2005.9.28
The development of new catalyticasymmetricreactions continues to be a major goal in organic chemistry. Here we report a novel antibody-catalyzed intramolecularMichael addition of aldehydes and ketones to enones. The reaction is enantioselective and diastereoselective with a high ee value and cis/trans ratio. This is the first example of asymmetricintramolecularMichael addition of ketones. Antibody
开发新的催化不对称反应仍然是有机化学的主要目标。在这里,我们报告了一种新型抗体催化的醛和酮与烯酮的分子内迈克尔加成。该反应具有对映选择性和非对映选择性,具有高 ee 值和顺/反比。这是酮的不对称分子内迈克尔加成的第一个例子。抗体 38C2 是迄今为止唯一能够在迈克尔加成产物中产生这种选择性的催化剂。