Treatment of γ-acyloxy-α,β-unsaturated ester with bis(iodozincio)methane in the presence of palladium catalyst gave an allylic zinc carrying an ester group; the allylic zinc, which is prepared by this umpolung process, reacts with ketones regioselectively.
在
钯催化剂存在下,用双(
碘代
锌基)
甲烷处理γ-乙酰氧基-α,β-不饱和酯,可得到带有酯基的烯丙基
锌。