Cationic Cobalt Porphyrin-Catalyzed Allylation of Aldehydes with Allyltrimethylsilanes
作者:Rei Tomifuji、Shota Masuda、Takuya Kurahashi、Seijiro Matsubara
DOI:10.1021/acs.orglett.9b01303
日期:2019.5.17
porphyrin-catalyzed allylation of aldehydes with allyltrimethylsilanes is developed. The formation of the aldehyde–cobalt porphyrin complex, the key intermediate for the addition of allylsilanes, is confirmed by theoretical studies and synchrotron-based X-ray absorption fine-structure measurements. Facile dissociation of the product by allylation from the cobalt complex regenerates the active complex with
开发了阳离子钴卟啉催化的醛与烯丙基三甲基硅烷的烯丙基化反应。理论研究和基于同步加速器的X射线吸收精细结构测量结果证实了醛-钴卟啉配合物(添加烯丙基硅烷的关键中间体)的形成。通过烯丙基化从钴络合物中使产物容易解离,使活性络合物与醛再生。容易获得的[Co(TPP)] SbF 6络合物可作为该烯丙基化的有效催化剂。