Preparation of silyl enol ethers derived from α-phenylseleno aldehydes and α-phenylseleno ketones
作者:Sylvain Ponthieux、Francis Outurquin、Claude Paulmier
DOI:10.1016/0040-4020(95)00532-d
日期:1995.8
experimental conditions for the preparation of trimethylsilyl enol ethers 3 from α-phenylseleno aldehydes 1, compatible with a limited deselenenylation of the substrate, were studied. Starling from α-phenylseleno ketones 2, the enoxysilanes 4, bearing a vinylic PhSe group, are the major products when triethylamine is the base. Trimethylsilyl enol ethers 5 with an allylic PhSe group arc also formed beside 4
研究了由α-苯基硒基醛1制备三甲基甲硅烷基烯醇醚3的最佳实验条件,该底物与底物的有限的硒烯基化作用相容。当以三乙胺为碱时,带有乙烯基PhSe基团的环氧硅烷4是由α-苯基硒基酮2形成的星形化合物。当在较低温度下使用LDA或KH时,在4旁边还会形成具有烯丙基PhSe基团的三甲基甲硅烷基烯醇醚5。