A novel process for the removal of an allylic group in an allylic ester or of an allylic-oxycarbonyl group in an allylic carbonate or carbamate is disclosed allowing very mild reaction conditions. The process is effected by reacting a solution of the allylic ester, carbonate or carbamate in an organic, aprotic solvent in the presence of a catalytic amount of an organic-soluble palladium complex having a coordinating phosphine ligand with a carboxylic acid having from five to eighteen carbon atoms or an alkali metal salt thereof or with sodiumcyanoborohydride or sodiumborohydride.
本发明公开了一种去除烯丙基酯中的烯丙基基团或烯
丙基碳酸酯或
氨基甲酸酯中的烯丙基-氧羰基基团的新工艺,反应条件非常温和。 该工艺是将烯丙基酯、
碳酸酯或
氨基甲酸酯溶液在有机
壬烷溶剂中,在催化量的有机可溶性
钯络合物的存在下进行反应,该
钯络合物具有配位
膦配体,与具有 5 至 18 个碳原子的
羧酸或其碱
金属盐或与
氰基硼氢化钠或
硼氢化钠配位。