101823-45-4Relevant articles and documents
HYDROSILYLATION OF THE CC TRIPLE BOND BY PHENYL- AND THIENYL-SILANES
Lukevics, E.,Sturkovich, R. Ya.,Pudova, O. A.
, p. 151 - 158 (1985)
The effects of the structures of the hydrosilane and the acetylene derivative, catalyst, temperature and solvent on the yields and ratio of isomers during the hydrosilylation of phenylacetylene, 2-(ethynyl)thiophene, methyl propiolate, propargyl alcohol a
The activity of Pt/SiO2 catalysts obtained by the sol-gel method in the hydrosilylation of 1-alkynes
Jimenez, Rafael,Martinez-Rosales, J. Merced,Cervantes, Jorge
, p. 1370 - 1375 (2003)
Heterogeneous platinum catalysts (Pt/SiO2) obtained by the sol-gel process at pH 3 and 9 have been used in the hydrosilylation reaction of 1-alkynes using various silanes. Once the catalysts were activated they were used in the hydrosilylation
Hydrosilylation of acetylenes using a H2PtCl6/CO catalytic system; significantly enhanced yields of α-products
Rivera-Claudio, Mirna,Rozell, James,Ramirez-Oliva, Eulalia,Cervantes, Jorge,Pannell, Keith H.
, p. 267 - 270 (1996)
The chloroplatinic acid-catalysed hydrosilylations of phenylacetylene, 1-heptyne, and 1-octyne by (η5-C5H5)Fe(CO)2SiPh2H (I), Ph2MeSiH and PhMe2SiH have been studied in the prese
1H, 13C and 29Si NMR study of α- and β-silylstyrenes and their adducts with dichlorocarbene
E. Liepins,Goldberg, Yu.,Iovel, I.,Lukevics, E.
, p. 301 - 312 (1987)
1H, 13C and 29NMR spectra for the α- and β-silylstyrenes (E)-PhCH=CHSiR3 (I) and PhC(SiR3)=CH2 (II) (R = Cl, Me, Ph), and those for some dichlorocarbene adducts of I and II (R = Me, Ph), were examined.From the 13C NMR data, the phenyl substituent in the m
Metal supported catalysts obtained by sol-gel in the hydrosilylation of phenylacetylene with R3SiH organosilanes (R3 = Ph3, Ph2Me, and PhMe2)
Jimenez, Rafael,Lopez, Juan Manuel,Cervantes, Jorge
, p. 1491 - 1495 (2000)
The hydrosilylation reaction of phenylacetylene, generated on the surface of solid catalysts (such as Pt and Ru) supported on inorganic matrices such as MgO obtained by the sol-gel process, yields vinylsilanes as the main products. The products' distribut
Hydrosilylation of Terminal Alkynes Catalyzed by a ONO-Pincer Iridium(III) Hydride Compound: Mechanistic Insights into the Hydrosilylation and Dehydrogenative Silylation Catalysis
Pérez-Torrente, Jesús J.,Nguyen, Duc Hanh,Jiménez, M. Victoria,Modrego, F. Javier,Puerta-Oteo, Raquel,Gómez-Bautista, Daniel,Iglesias, Manuel,Oro, Luis A.
, p. 2410 - 2422 (2016/08/02)
The catalytic activity in the hydrosilylation of terminal alkynes by the unsaturated hydrido iridium(III) compound [IrH(κ3-hqca)(coe)] (1), which contains the rigid asymmetrical dianionic ONO pincer ligand 8-oxidoquinoline-2-carboxylate, has been studied. A range of aliphatic and aromatic 1-alkynes has been efficiently reduced using various hydrosilanes. Hydrosilylation of the linear 1-alkynes hex-1-yne and oct-1-yne gives a good selectivity toward the β-(Z)-vinylsilane product, while for the bulkier t-Bu-C≡CH a reverse selectivity toward the β-(E)-vinylsilane and significant amounts of alkene, from a competitive dehydrogenative silylation, has been observed. Compound 1, unreactive toward silanes, reacts with a range of terminal alkynes RC≡CH, affording the unsaturated η1-alkenyl complexes [Ir(κ3-hqca)(E-CH=CHR)(coe)] in good yield. These species are able to coordinate monodentate neutral ligands such as PPh3 and pyridine, or CO in a reversible way, to yield octahedral derivatives. Further mechanistic aspects of the hydrosilylation process have been studied by DFT calculations. The catalytic cycle passes through Ir(III) species with an iridacyclopropene (η2-vinylsilane) complex as the key intermediate. It has been found that this species may lead both to the dehydrogenative silylation products, via a β-elimination process, and to a hydrosilylation cycle. The β-elimination path has a higher activation energy than hydrosilylation. On the other hand, the selectivity to the vinylsilane hydrosilylation products can be accounted for by the different activation energies involved in the attack of a silane molecule at two different faces of the iridacyclopropene ring to give η1-vinylsilane complexes with either an E or Z configuration. Finally, proton transfer from a η2-silane to a η1-vinylsilane ligand results in the formation of the corresponding β-(Z)- and β-(E)-vinylsilane isomers, respectively.
Platinum(ii) complexes with polydentate N-heterocyclic carbenes: Synthesis, structural characterization and hydrosilylation catalysis
Lu, Chunxin,Gu, Shaojin,Chen, Wanzhi,Qiu, Huayu
experimental part, p. 4198 - 4204 (2010/07/09)
The platinum(ii) complexes of multidentate N-heterocyclic carbenes, [Pt(L1)2Cl](PF6) (1, L1 = N-methyl-N-(2-pyrimidinyl) imidazolylidene), [Pt(L2)Cl](PF6) (2, L2 = N-butyl-N-(1,10- phenanthrolin-2-yl)imidazolylidene), [PtL
