Highly Stereoselective Trichloromethylation of N-(tert-Butylsulfinyl)aldimines: Facile Synthesis of Chiral α-Trichloromethylamines
作者:Ya Li、Yunlv Cao、Jiaying Gu、Wei Wang、Han Wang、Tao Zheng、Zhihua Sun
DOI:10.1002/ejoc.201001495
日期:2011.2
The first highly stereoselective and facile synthesis of α-trichloromethylamines is described by using a nucleophilic trichloromethylation strategy. With tetrabutylammonium triphenyldifluorosilicate (TBAT) as the mediator, the trichloromethyl anion (CCl 3 ― ) from TMSCCl 3 can be transferred to N-(tert-butylsulfinyl)aldimines in excellent yields and with high diastereoselectivity (≥99:1 dr).
通过使用亲核三氯甲基化策略描述了 α-三氯甲基胺的第一个高度立体选择性和简便的合成。以三苯基二氟硅酸四丁基铵 (TBAT) 作为介质,TMSCCl 3 中的三氯甲基阴离子 (CCl 3 ― ) 可以以优异的收率和高非对映选择性 (≥99:1 dr) 转移到 N-(叔丁基亚磺酰基) 醛亚胺中。