Studies on the sharpless asymmetric epoxidation of unsymmetrical divinylmethanols
作者:Toshio Honda、Hirotake Mizutani、Kazuo Kanai
DOI:10.1039/p19960001729
日期:——
A reaction of racemic unsymmetrical divinylmethanol rac-13 under the Sharpless asymmetric epoxidation conditions using stoichiometric amounts of titanium tetraisopropoxide [Ti(OPi)4], D-(–)-diisopropyl tartrate (DIPT) and tert-butyl hydroperoxide (TBHP) afforded R-14 and R-15 in 41 and 43% yield, each with > 99%ee, respectively, where the kinetic resolution and subsequent epoxidation had proceeded