mono-selective alkylation of various pyridines and azines with unactivated alkenes and vinylarenes using a heterobimetallic Rh–Al catalyst is reported. The use of aliphatic alkenes exclusively affords the linear alkylation products, while vinylarenes mainly afford branched alkylation products. The details of the reaction mechanism are revealed by DFT calculations: the reductive elimination of the products
Ruthenium-Catalyzed Intermolecular Direct Silylation of Unreactive C(sp<sup>3</sup>)–H Bonds
作者:Wei Li、Xiaolei Huang、Jingsong You
DOI:10.1021/acs.orglett.5b03593
日期:2016.2.19
A Ru-catalyzed intermolecular silylation of unreactive, aliphatic C(sp3)–H bonds has been described for the first time. This protocol features low catalyst loading, a relatively broad substrate spectrum, good functional group tolerance, and no sensitivity to air, which provides a convenient and practical pathway for the construction of C–Si bonds.