use of tartaric acid derivatives as chiral auxiliaries in the palladium-catalyzed cross-coupling of optically active cyclopropylboronic acids with electrophiles. The absolute configuration of the chiral carbon atom is retained, and the reaction proceeds with good yields and enantiomeric excesses. R=H, p-Ph, o-CO2 CH3 , p-CO2 CH3 , p-NO2 , o-OCH3 , m-OCH3 .
旋光性
环丙烷(例如1)可以通过使用
酒石酸衍
生物作为旋光性环丙基
硼酸与亲电试剂在
钯催化的交叉偶联中的手性助剂来制备。保留了手性碳原子的绝对构型,并且反应以良好的收率和对映体过量进行。R = H,p-Ph,o-CO 2 CH 3,p-CO 2 CH 3,p-NO 2,o-OCH 3,m-OCH 3。