The Addition of Silicon Hydrides to Olefinic Double Bonds. Part II. The Use of Group VIII Metal Catalysts

Fifty Years of Hydrosilylation in Polymer Science: A Review of Current Trends of Low-Cost Transition-Metal and Metal-Free Catalysts, Non-Thermally Triggered Hydrosilylation Reactions, and Industrial Applications

“…They used pivaloyl Pv ligands for the generation of Co(OPv) 2 , allowing a reaction of styrene and α-methylstyrene with tertiary silanes in the presence of 1-adamantyl isocyanide. The resulting hydrosilylation reaction exhibited yields of up to 99% with TONs of up to 10,000.…”

“…It was discovered that hydroalkoxysilanes enhanced the catalytic activity as co-catalysts, while they were less reactive towards the hydrosilylation reactions themselves. In one prominent example of this co-catalytic activity, the yield of the hydrosilylation of styrene with poly(dimethylsiloxane) (PDMS) was increased from 88% to 96% using (EtO) 2 MeSiH. The catalysts have been successfully used for the cross-linking of vinyl-functionalized PDMS and poly(dimethylhydroxysiloxane)s with yields up to 97%.…”

“…Activation of this system could be accomplished by visible light [89]. Using 2.4 mol % of the platinum catalyst, minimum dosage of CTX had to be at least 4000 ppm to reach reasonable silane conversion upon Fry and Neckers employed Pt(acac) 2 for the photoactivated hydrosilylation polymerization of vinyldimethylsilane [85]. They observed a significant degree of heterogeneous platinum catalysis in the mechanism of the polymerization: The polymers doubled molecular weights during ageing due to the reaction of telechelic residual vinyl and hydride groups; this reaction was apparently catalyzed by platinum colloids formed after photolysis.…”

“…Interestingly, the change of the reactant from hex-1-ene to oct-1-ene on the one hand as well as the change from symmetric to asymmetric catalysts complexes on the other led to increased TONs of 1500. Notably, using higher amounts of the iron complex (up to 0.3 mol % Fe), the hydrosilylation reaction of oct-1-ene and PhSiH 3 occurred as double addition, yielding the product PhSi(Oct) 2 …”

Study of Karstedt's Catalyst for Hydrosilylation of a Wide Variety of Functionalized Alkenes with Triethoxysilane and Trimethoxysilane

“…[5] Since Speier found that chloroplatinic acid (H 2 PtCl 6 ) was a selective and efficient homogeneous alkene hydrosilylation catalyst in 1957, [6] transition metal catalysts on the basis of metals such as platinum, [7] rhodium, [8] copper [9] and cobalt [10] with high catalytic activity and selectivity have attracted much attention in theoretical and practical applications. At present, platinum catalyst is the most comprehensive and widely used catalyst in the study of hydrosilylation catalyst, due to the high catalytic activity and selectivity, and the high stability towards heat, oxygen and moisture.…”