The intermolecular dehydrogenative coupling of 1,1,1,3,5,5,5-heptamethyltrisiloxane with arenes proceeded in the presence of a catalytic amount of platinum complexes prepared in situ from PtCl2 and hydrotris(pyrazolyl)borate derivatives.
Kinetic Analysis and Sequencing of Si–H and C–H Bond Activation Reactions: Direct Silylation of Arenes Catalyzed by an Iridium-Polyhydride
作者:Miguel A. Esteruelas、Antonio Martínez、Montserrat Oliván、Enrique Oñate
DOI:10.1021/jacs.0c07578
日期:2020.11.11
addition of the coordinated bond and the subsequent reductive elimination of H2. Complexes 2-4 activate a C-H bond of symmetrically and asymmetrically substituted arenes to form silylated arenes and to regenerate 1. This sequence of reactions defines a cycle for the catalytic direct C-H silylation of arenes. Stoichiometric isotopic experiments and the kinetic analysis of the transformations demonstrate