Reaction of acylsilanes with sulfur ylides. selective formation of silyl enol ethers or β-ketosilanes.
作者:Tadashi Nakajima、Masahito Segi、Fumitosi Sugimoto、Reiko Hioki、Seiko Yokota、Kiyoshi Miyashita
DOI:10.1016/s0040-4020(01)81918-9
日期:1993.1
results in the formation of the corresponding silyl enol ethers or β-ketosilanes. The relative ratio of these products varies with the ylide conditions and the stability of ylide used. It is noteworthy that silyl enol ethers were formed under the salt-free ylide conditions, and that β-ketosilanes were yielded in the presence of soluble inorganic salts in THF, selectively. The formation of both products
酰基硅烷与硫化氢在THF中的反应导致形成相应的甲硅烷基烯醇醚或β-酮硅烷。这些产物的相对比例随叶立德条件和所用叶立德的稳定性而变化。值得注意的是,在无盐的叶立德条件下形成了甲硅烷基烯醇醚,并且在THF中存在可溶性无机盐的情况下,选择性地产生了β-酮硅烷。两种产物的形成将根据反应中间体中甲硅烷基的阴离子和阳离子重排来解释。