Chiral 2-phenyl succinic ester derivatives have been obtained under mild conditions, in short times and with satisfactory yields by electrochemical reduction of chiral cinnamic acid derivatives under a CO2 atmosphere. When 4R-(diphenylmethyl)-oxazolidin-2-one was used as a chiral auxiliary the two diastereoisomers could be easily separated by flash chromatography and the R-isomer was obtained as major product.
通过在
二氧化碳气氛下对手性
肉桂酸衍
生物进行电
化学还原,在温和的条件下获得了手性 2-苯基
琥珀酸酯衍
生物,而且时间短、收率高。当使用 4R-(二苯基甲基)-
噁唑烷-2-酮作为手性助剂时,两种非对映异构体很容易通过闪速色谱法分离,并获得 R-异构体作为主要产物。