We have successfully developed a strategy for the first time for the enantioselective Rh-TaniaPhos catalyzed asymmetric hydrogenation of unprotected β-enamine phosphonates to free β-amino phosphonates directly with good enantioselectivities (80%–86% ee) and high conversions (>99% conversion). The resulting chiral free β-amino phosphonates and their derivatives are important intermediates in biochemistry
A Facile Synthesis of Optically Active ?-Amino-?-arylethylphosphonates by Mitsunobu Reaction
作者:Chengfu Xu、Chengye Yuan
DOI:10.1002/ejoc.200400420
日期:2004.11
We describe a convenient and simple synthesis of opticallyactive β -amino-β-arylethylphosphonates based on Mitsunobe reactions of chiral β-aryl-β-hydroxyethylphosphonates, prepared in turn by Candida rugosa lipase catayzed kinetic resolution of the corresponding racemates.