the reduction of various α-bromo carboxylic acidderivatives. When α-bromo carboxylic acidderivatives were treated with , the corresponding dehalogenated products were obtained in good to excellent yields. Moreover, selected carboxylic acidderivatives were dehalogenated even when a catalytic amount (0.2 equiv) of GeCl4 was employed in the presence of water (1.0 equiv). The present reduction was also
发现Ph 3 P / GeCl 4组合对于减少各种α-溴代羧酸衍生物是有效的。用α-溴代羧酸衍生物处理后,可获得良好至优异收率的相应脱卤产物。此外,即使在水(1.0当量)存在下使用催化量(0.2当量)的GeCl 4时,所选的羧酸衍生物也被脱卤。本还原也应用于α,α-二溴-β-内酰胺的选择性半还原。