The substitution of the silyl group in vinylsilanes by an allylic group proceeded when β-triphenylsilylallyl alcohols were treated with copper(I) tert-butoxide and allylic halides. This reaction is the first synthetic application of 1,3 Csp2-to-O silyl migration which provides a useful method for generation of vinyl anion equivalents.
Reactions of carboxamides with vinylsilanes under oxidative conditions
作者:Vera V. Astakhova、Mikhail Yu. Moskalik、Bagrat A. Shainyan
DOI:10.1016/j.jorganchem.2021.122230
日期:2022.2
The reactions of acetamide, benzamide and trifluoroacetamide with trimethyl(vinyl)-, triphenyl(vinyl)-, dimethyl(divinyl)- and diphenyl(divinyl)silanes in the presence of oxidants (t-BuOCl + NaI) or N-bromosuccinimide (NBS) in acetonitrile have been studied. Generally, all unsaturated silanes react with trifluoroacetamide to give the products of haloamidation, whereas with acetamide or benzamide the