(1S,2S)- OR (1R,2R)-cis-1-ARYLPHOSPHOLANE-2-CARBOXYLIC ACID BORANE COMPLEX AND METHOD FOR PRODUCING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a method for selectively and highly efficiently producing as a useful substance a cis-phospholane-2-carboxylic acid derivative which is newly found to have an asymmetry-inducing effect, and to provide an asymmetric ligand obtained by the method or a compound capable of react-inducing the asymmetric ligand.;SOLUTION: This method for producing the 1-arylphospholane-2-carboxylic acid borane complex, comprising reacting a 1-arylphospholane borane complex with an alkyl lithium and then with carbon dioxide, is characterized by controlling the production ratio of the cis isomer to the trans isomer by the change of a rate for introducing carbon dioxide gas into the reaction system to preferentially produce the cis isomer.;COPYRIGHT: (C)2006,JPO&NCIPI