Asymmetric Mannich Reaction of Imines Derived from Aliphatic and Aromatic Aldehydes Catalyzed by Diarylprolinol Silyl Ether
作者:Tatsuya Urushima、Hayato Ishikawa、Yujiro Hayashi
DOI:10.1002/chem.201101077
日期:2011.7.18
Anti Mannich, try this! A direct asymmetric Mannich reaction catalyzed by a diarylprolinol silyl ether was developed to afford the anti‐Mannich product with excellent enantioselectivity. Imines derived from both aliphatic and aromatic aldehydes were successfully used to obtain the synthetically important β‐amino aldehydes (see scheme; Ts=tosyl). The reaction can also be performed in the presence of
反曼尼奇,试试看!开发了由二芳基脯氨醇甲硅烷基醚催化的直接不对称曼尼希反应,以提供具有出色对映选择性的抗曼尼希产物。衍生自脂族和芳族醛的亚胺已成功用于获得合成上重要的β-氨基醛(参见方案; Ts =甲苯磺酰基)。该反应也可以在水的存在下进行。