Asymmetric and diastereoselective Mannich reactions using hydantoin as a chiral auxiliary

作者:Li Xuan Ran; Lu Cui Fen; Chen Zu Xing; Li Yan; Yang Gui Chun*
来源:Tetrahedron: Asymmetry , 2012, 23(18-19): 1380-1384.
DOI:10.1016/j.tetasy.2012.09.006

摘要

The Mannich reaction of titanium enolates of a chiral hydantoin with various aldimines smoothly occurred in good yields and with high anti-diastereoselectivity. The Mannich adducts can be readily cleaved by alcoholysis to afford several beta-amino ester derivatives in good yields and in almost enantiomerically pure form.

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