Highly Enantio- and Diastereoselective Organocatalytic Desymmetrization of Prochiral Cyclohexanones by Simple Direct Aldol Reaction Catalyzed by Proline
作者:Xavier Companyó、Guillem Valero、Luis Crovetto、Albert Moyano、Ramon Rios
DOI:10.1002/chem.200900488
日期:2009.7.6
Panacea for aldol desymmetrizations: We describe an easy entry for the desymmetrization of 4‐substituted‐cyclohexanones catalyzed by proline, using as cocatalysts different hydrogen‐bonding donors (see scheme), which dramatically improves the catalytic efficiency of proline in desymmetrization reactions.
醛醇缩合不对称的灵丹妙药:我们描述了脯氨酸催化的4取代环己酮的不对称化的简便方法,它使用不同的氢键供体作为助催化剂(参见方案),从而显着提高了脯氨酸在不对称化反应中的催化效率。