A silyl-mediated [3+2] photochemical cycloaddition
作者:Michael G Organ、Debasis Mallik
DOI:10.1139/v06-077
日期:2006.10.1
The generation of larger rings from intermediate cyclobutanes via a two-step [2+2] photocycloaddition – ring expansion, known as the de Mayo reaction, has been widely applied in synthesis. Herein a one-stepsynthesis of cyclopentanoids has been developed based on the photochemical irradiation of an enone in the presence of an allylsilane. The ability of the silyl moiety to stabilize the intermediate
通过两步 [2+2] 光环加成 - 扩环(称为 de Mayo 反应)从中间体环丁烷生成更大的环已广泛应用于合成中。在此,基于烯酮在烯丙基硅烷存在下的光化学辐照,开发了一种环戊烷的一步合成。甲硅烷基部分稳定中间体双自由基的能力被认为是这种独特转化的原因,人们通常期望看到 [2+2] 环丁烷加合物。 关键词:[2+2] 光环加成 - 扩环,烯丙基硅烷,环戊烷,光化学。