Experimental and Computational Studies of the Ruthenium-Catalyzed Hydrosilylation of Alkynes: Mechanistic Insights into the Regio- and Stereoselective Formation of Vinylsilanes
作者:Ruili Gao、Dale R. Pahls、Thomas R. Cundari、Chae S. Yi
DOI:10.1021/om501019j
日期:2014.12.8
regio- and stereoselective hydrosilylation of alkynes to form vinylsilane products. (Z)-Vinylsilane products were selectively formed for sterically nondemanding terminalalkynes, while (E)-vinylsilane products resulted from sterically demanding terminalalkynes. Kinetic data were obtained from the hydrosilylation of phenylacetylene. The phosphine inhibition study showed an uncompetitive Michaelis–Menten
Transfer dehydrogenative coupling of triethylsilane catalysed by ruthenium and rhodium complexes. A new Si–C bond forming process
作者:Peter I. Djurovich、Alfred R. Dolich、Donald H. Berry
DOI:10.1039/c39940001897
日期:——
Four-legged piano stool complexes (η6-arene)Ru(H)2(SiEt3)2 and (η5-C5Me5)Rh(H)2(SiEt3)2 catalyse the transfer dehydrogenative coupling of Et3SiH in the presence of a hydrogen acceptor such as tert-butylethylene to yield the carbosilane dimer, HSiEt2CHMeSiEt3, and 2,2-dimethylbutane by a mechanism involving an intermediate η2-silene complex, LnM(Et2SiCHMe), generated by β-hydrogen elimination from a
A novel terphenylphosphine PMe2ArDipp2 (1) (Dipp = 2,6-iPr2C6H3) forms stable Pt(0) complexes with ethene and 3,3-dimethylbut-1-ene that behave as a source of the reactive Pt(PMe2ArDipp2) fragment. The complexes are efficient...
一种新型的三苯膦PMe 2 Ar Dipp2(1)(Dipp = 2,6- i Pr 2 C 6 H 3)与乙烯和3,3-二甲基丁-1-烯形成稳定的Pt(0)络合物,它们作为乙烯的来源反应性Pt(PMe 2 Ar Dipp2)片段。配合物很有效...
Markovnikov Hydrosilylation of Alkynes with Tertiary Silanes Catalyzed by Dinuclear Cobalt Carbonyl Complexes with NHC Ligation
作者:Dongyang Wang、Yuhang Lai、Peng Wang、Xuebing Leng、Jie Xiao、Liang Deng
DOI:10.1021/jacs.1c06583
日期:2021.8.18
with PhC≡CH and HSiEt3 can furnish the dinuclear cobalt alkyne and mononuclear cobalt silyl complexes [(IPr)(CO)2Co(μ–η2:η2-HCCPh)Co(CO)3], [(IPr)(CO)2Co(μ-η2:η2-HCCPh)Co(CO)2(IPr)], and [(IPr)Co(CO)3(SiEt3)], respectively. Both dicobalt bridging alkyne complexes can react with HSiEt3 to yield α-triethylsilyl styrene and effect the catalytic Markovnikov hydrosilylation reaction. However, the mono(NHC)
Visible light accelerated hydrosilylation of alkynes using platinum–[acyclic diaminocarbene] photocatalysts
作者:Jack C. Gee、Beth A. Fuller、Hannah-Marie Lockett、Gita Sedghi、Craig M. Robertson、Konstantin V. Luzyanin
DOI:10.1039/c8cc04287j
日期:——
Platinum–[diaminocarbene] complexes work as transition-metal photocatalysts for the hydrosilylation of alkynes. A catalytic system operates under visible light irradiation (blue LED) enabling the conversion of a range of terminal and internal alkynes to respective vinyl silanes in excellent yields.