The ab initio molecular orbital method is employed to study the enantioselective reduction of acetophenone with borane catalyzed by thiazolidinooxazaborolidine. Computation result shows that the controlling step for t...The ab initio molecular orbital method is employed to study the enantioselective reduction of acetophenone with borane catalyzed by thiazolidinooxazaborolidine. Computation result shows that the controlling step for the reduction is the decomposition of the catalyst-alkoxyborane adduct and the reduction leads to S-alcohols. The transition state of the hydride transfer from the borane moiety to the carbonyl carbon of acetophenone is a twisted chair structure with a B(2)-N(3)-B BH 3-H BH 3-C CO-O CO 6-membered ring.展开更多
基金ProjectsupportedbytheScienceFoundationofNationalEducationMinistry (No .9910 6 )
文摘The ab initio molecular orbital method is employed to study the enantioselective reduction of acetophenone with borane catalyzed by thiazolidinooxazaborolidine. Computation result shows that the controlling step for the reduction is the decomposition of the catalyst-alkoxyborane adduct and the reduction leads to S-alcohols. The transition state of the hydride transfer from the borane moiety to the carbonyl carbon of acetophenone is a twisted chair structure with a B(2)-N(3)-B BH 3-H BH 3-C CO-O CO 6-membered ring.
