First anionic silyl migration from sp<sup>2</sup>carbon to carbonyl oxygen. Stereospecific allylation of (Z)-β-trimethylsilyl-α,β-unsaturated ketones
作者:Haruhiko Taguchi、Hiroko Miyashita、Akira Tsubouchi、Takeshi Takeda
DOI:10.1039/b207325k
日期:——
1,4-Silyl migration from sp2 carbon to carbonyl oxygen proceeded by the treatment of (Z)-β-trimethylsilyl-α,β-unsaturated ketones with copper(I) tert-alkoxide to afford vinylmetal species, which reacted with allylic halides to produce enol trimethylsilyl ethers of β-alk-2-enyl-α,β-unsaturated ketones with complete retention of configuration.
通过使用铜(I)叔烷氧基处理(Z)-β-三甲基硅基-α,β-不饱和酮,实现了从sp2碳到羰基氧的1,4-硅基迁移,生成了乙烯基金属物种,这些物种与烯丙基卤反应,产生了β-烷-2-烯基-α,β-不饱和酮的烯醇三甲基硅醚,且构型保持完整。