presence of a catalytic amount of trityl perchlorate, secondary and tertiary allyl methyl ethers smoothly react with silyl enol ethers to afford the corresponding γ,δ-unsaturated carbonyl compounds in good yields. By the combination of this reaction with the trityl perchlorate catalyzed allylation of acetals γ,δ-unsaturated ketones are synthesized from α,β-unsaturated acetals by a one-pot procedure.
在催化量的
高氯酸三苯甲基酯存在下,仲和叔
烯丙基甲基醚与甲
硅烷基烯醇醚顺利反应,以良好的产率得到相应的 γ,δ-不饱和羰基化合物。通过该反应与
高氯酸三苯甲基酯催化的
缩醛烯丙基化反应相结合,γ,δ-不饱和酮通过一锅法由α,β-不饱和
缩醛合成。