Synthesis of organosilicon-containing phosphinyl ligands and application in the iron catalyzed hydrosilylation of olefins

Hydrosilylation of unsaturated C-C bonds with hydrosilanes is very important process to access functional organosillicon compounds. Ligands with phosphorus atoms act as a major role in the hydrosilylation of alkenes. A series of organosilicon-containing phosphinyl ligands were prepared, and the application as ligands for iron catalyzed hydrosilylation of alkenes had been investigated. These catalytic systems show excellent catalytic performance for hydrosilylation of alkenes without other activator. FeCl2/L1 catalyst system showed the best catalytic performance (97.6% conversion of 1-octene with 99.1% selectivity of the beta-adduct) for the hydrosilylation of olefins, and the hydrosilylation products can be obtained with higher yield for different straight chain olefin. A series of organosilicon-containing phosphinyl ligands were prepared, and these Fe/(OPSi) catalytic systems show excellent catalytic performance for hydrosilylation of alkenes. image