Reductive addition of propargylic acetates to carbonyl compounds proceeded smoothly at room temperature by using SmI2 and a catalytic amount of Pd(PPh3)4 to give the corresponding acetylenic and/or allenic alcohols with appreciable selectivity. The method is useful especially for the preparation of tri- and tetrasubstituted allenic alcohols.
使用
SmI2 和一定量的 Pd(PPh3)4,
丙炔基
乙酸酯与羰基化合物的还原加成反应在室温下顺利进行,并以明显的选择性得到相应的
乙炔醇和/或烯醇。该方法尤其适用于制备三取代和四取代的联烯醇。