作者:Mitsunori Honda、Sho Sasaki、Tsuyoshi Nishimoto、Hiromoto Koshiro、Ko-Ki Kunimoto、Masahito Segi
DOI:10.1016/j.tetlet.2018.09.017
日期:2018.10
The synthesis of cyclopropyl silyl ketones possessing a hydrocarbon group at 1-position of three-membered ring was investigated. The reaction of sulfoxonium ylide with α,β-unsaturated acylsilanes derived from α,β-unsaturated aldehydes did not afford the desired acylsilane derivatives. Instead, the corresponding silyl enol ethers were yielded exclusively. On the other hand, the Corey-Chaykovsky cyclopropanation
研究了在三元环的1-位上具有烃基的环丙基甲硅烷基酮的合成。磺酸亚砜on与衍生自α,β-不饱和醛的α,β-不饱和酰基硅烷的反应不能提供所需的酰基硅烷衍生物。相反,仅产生相应的甲硅烷基烯醇醚。另一方面,α-取代的α,β-不饱和醛的Corey-Chaykovsky环丙烷化进展良好,得到1-取代的环丙基醛。所获得的醛中的甲酰基质子通过羰基的甲磺酰基的甲硅烷基取代得到目标的酰基硅烷。