Triethylborane Induced Perfluoroalkylation of Silyl Enol Ethers and Ketene Silyl Acetals with Perfluoroalkyl Iodides
作者:Katsukiyo Miura、Yoshihiro Takeyama、Koichiro Oshima、Kiitiro Utimoto
DOI:10.1246/bcsj.64.1542
日期:1991.5
perfluoroalkyl iodides with silyl enol ethers mediated by Et3B in the presence of base such as 2,6-dimethylpyridine provides mixtures of perfluoroalkylated trialkylsilyl enol ethers and α-perfluoroalkylated ketones. The yield and distribution of the products heavily depend on the nature of base employed. Treatment of a reaction mixture consisting of perfluoroalkylated silyl enol ether and α-perfluoroalkylated
在碱如 2,6-二甲基吡啶的存在下,全氟烷基碘与由 Et3B 介导的甲硅烷基烯醇醚的反应提供全氟烷基化三烷基甲硅烷基烯醇醚和 α-全氟烷基化酮的混合物。产品的产量和分布在很大程度上取决于所用碱的性质。用浓盐酸在 THF 中处理由全氟烷基化甲硅烷基烯醇醚和 α-全氟烷基化酮组成的反应混合物,得到 α-全氟烷基化酮作为单一产物。在没有碱的情况下,烯酮甲硅烷基缩醛与全氟烷基碘反应以优异的产率提供 α-全氟烷基化酯。