Towards enantiomeric 2,3-epoxypropylphosphonates †Dedicated to Professor Jan Michalski on the occasion of his 80th birthday. †
作者:Andrzej E Wróblewski、Anetta Hałajewska-Wosik
DOI:10.1016/s0957-4166(00)00171-3
日期:2000.6
Hydrolysis of diethyl 2,3-epoxypropylphosphonate in the presence of (R,R)-salen-Co(III)-OAc after 19 h afforded a mixture of (S)-epoxide (82% ee) and diethyl (R)-2,3-dihydroxypropylphosphonate (98% ee). Improved enantiomeric excess (93%) of the (S)-epoxide was obtained in the 72 h hydrolytic kinetic resolution experiment. Acid-catalyzed hydrolysis of (S)-epoxide (91% ee) gave (S)-diol (72% ee) due to low C-3 regioselectivity of the reaction. (C) 2000 Elsevier Science Ltd. All rights reserved.