The Scope of the Direct Proline-Catalyzed Asymmetric Addition of Ketones to Imines
作者:Wolfgang Notz、Shin-ichi Watanabe、Naidu S. Chowdari、Guofu Zhong、Juan M. Betancort、Fujie Tanaka、Carlos F. Barbas
DOI:10.1002/adsc.200404114
日期:2004.8
A full account of catalytic direct asymmetric Mannich-type reactions is presented describing the scope of amino acid-catalyzed additions of unmodified ketones to a large variety of imines. These reactions are performed under very mild, operationally simple, and environmentally friendly and benign conditions employing a one-pot, three-component protocol as well as preformed imines. Typically, products
提供了催化直接不对称曼尼希型反应的完整说明,描述了氨基酸催化的未修饰酮加到各种亚胺中的范围。这些反应是在非常温和的,操作简单的,环境友好的和良性的条件下进行的,采用一锅,三组分方案以及预先形成的亚胺。通常,获得的产物具有高区域和非对映选择性以及极好的对映选择性。所开发的方法学被用作合成对映体纯的功能化α-氨基酸,γ-内酯,肟功能化氨基酸以及药理学上重要的靶标(如(R)-环己基甘氨酸)的有力方法。