Effect of triarylphosphane ligands on the rhodium-catalyzed hydrosilylation of alkene
作者:Mei Xue、Jiayun Li、Jiajian Peng、Ying Bai、Guodong Zhang、Wenjun Xiao、Guoqiao Lai
DOI:10.1002/aoc.3092
日期:2014.2
functionalized triarylphosphaneligands are characterized by a very high catalytic effectiveness for the hydrosilylation of alkene. Among these catalysts tested, RhCl3/diphenyl(2‐(trimethylsilyl)phenyl)phosphane (8a) exhibited excellent catalytic properties. Using this silicon‐containing phosphane ligand for the rhodium‐catalyzed hydrosilylation of styrene, both higher conversion of alkene and higher β‐adduct
A Ligand-Free Pt<sub>3</sub>Cluster Catalyzes the Markovnikov Hydrosilylation of Alkynes with up to 10<sup>6</sup>Turnover Frequencies
作者:Miguel A. Rivero-Crespo、Antonio Leyva-Pérez、Avelino Corma
DOI:10.1002/chem.201605520
日期:2017.1.31
The Pt‐catalyzed hydrosilylation of alkynes is the procedure of choice to obtain vinylsilanes, and is claimed to be the most relevant application of Pt in organicsynthesis. More than half a century after its discovery, only β‐vinylsilanes (anti‐Markovnikov addition) are obtained with simple Pt catalysts, whereas α‐vinylsilanes (Markovnikov addition) remain elusive compounds. Here the catalysis of
Olefin Ring Closing Metathesis and Hydrosilylation Reaction in Aqueous Medium by Grubbs Second Generation Ruthenium Catalyst
作者:Vivek Polshettiwar、Rajender S. Varma
DOI:10.1021/jo801330c
日期:2008.9.19
The Grubbs second generation ruthenium catalyst was shown to catalyze various olefin ring closing metathesis and hydrosilylation reactions in aqueousmedium. Reactions proceeded in pure water without any additives or cosolvents, in a short period of time. We found that inhomogeneity of the reaction mixture does not prevent high conversion (70-95%) of the products in both reactions.
Sequential Reactions Directed by Core/Shell Catalytic Reactors
作者:Yanhu Wei、Siowling Soh、Mario M. Apodaca、Jiwon Kim、Bartosz A. Grzybowski
DOI:10.1002/smll.200902336
日期:2010.4.9
Millimeter‐sized reactor particles made of permeable polymer doped with catalysts arranged in a core/shell fashion direct sequences of chemical reactions (e.g., alkyne coupling followed by hydrogenation or hydrosilylation followed by hydrogenation). Spatial compartmentalization of catalysts coupled with the diffusion of substrates controls reaction order and avoids formation of byproducts. The experimentally
reactivity and regioselectivity of transition metal‐based catalyst for silicon‐mediated organicsynthesis (SiMOS) is an important topic and challenge in organosilicon chemistry and synthetic organic chemitstry. In this manuscript, the dual ligand platinum catalyst system was developed for the hydrosilylation of alkynes. It was found that regioselectivity enhancement was determined with combinational use