A Simple Resolution Procedure Using the Staudinger Reaction for the Preparation of <i>P</i>-Stereogenic Phosphine Oxides
作者:Neil G. Andersen、Philip D. Ramsden、Daqing Che、Masood Parvez、Brian A. Keay
DOI:10.1021/jo015909u
日期:2001.11.1
(+/-)-P-stereogenic phosphines is achieved by exploiting the Staudinger reaction of a (+/-)-phosphine with enantiopure (1S,2R)-O-(tert-butyldimethylsilyl)isobornyl-10-sulfonyl azide. The resulting mixtures of diastereomeric phosphinimines are generally separable by fractional crystallization or flash chromatography. Subsequent acid-catalyzed hydrolysis provides the corresponding optically pure phosphine oxides
通过利用(+/-)膦与对映纯(1S,2R)-O-(叔丁基二甲基甲硅烷基)异冰片基-10的Staudinger反应可实现多种(+/-)-P-立体异构膦的拆分-磺酰叠氮化物。非对映体膦亚胺的所得混合物通常可通过分步结晶或快速色谱分离。随后的酸催化的水解以高收率提供了相应的光学纯的氧化膦。