20374-71-4Relevant academic research and scientific papers
Highly selective hydrosilylation of olefins and acetylenes by platinum(0) complexes bearing bulky N-heterocyclic carbene ligands
Zak,Bo?t,Kubicki,Pietraszuk
supporting information, p. 1903 - 1910 (2018/02/17)
Platinum complexes bearing bulky N-heterocyclic carbene (NHC) ligands, i.e., [Pt(IPr?)(dvtms)] (where, IPr? = 1,3-bis{2,6-bis(diphenylmethyl)-4-methylphenyl}imidazol-2-ylidene) and [Pt(IPr?OMe)(dvtms)] (where, IPr?OMe = 1,3-bis{2,6-bis(diphenylmethyl)-4-m
An effective hydrosilylation of alkynes in supercritical CO2 – A green approach to alkenyl silanes
Stefanowska, Kinga,Franczyk, Adrian,Szyling, Jakub,Salamon, Katarzyna,Marciniec, Bogdan,Walkowiak, Jedrzej
, p. 206 - 213 (2017/11/07)
Hydrosilylation of a wide group of alkynes (terminal and internal) with four structurally different silanes has been for the first time performed in supercritical CO2 (scCO2). The results clearly showed the advantages as well as the
Regio- and stereoselective hydrosilylation of unsymmetrical alkynes catalyzed by a well-defined, low-valent cobalt catalyst
Rivera-Hernández, Alejandro,Fallon, Brendan J.,Ventre, Sandrine,Simon, Cédric,Tremblay, Marie-Hélène,Gontard, Geoffrey,Derat, Etienne,Amatore, Muriel,Aubert, Corinne,Petit, Marc
supporting information, p. 4242 - 4245 (2016/09/09)
Herein, the use of a well-defined low-valent cobalt(I) catalyst [HCo(PMe3)4] capable of performing the highly regio- and stereoselective hydrosilylation of internal alkynes is reported. The reaction can be applied to a variety of hyd
Rhodium nanoflowers stabilized by a nitrogen-rich PEG-tagged substrate as recyclable catalyst for the stereoselective hydrosilylation of internal alkynes
Guo, Wusheng,Pleixats, Roser,Shafir, Alexandr,Parella, Teodor
supporting information, p. 89 - 99 (2015/01/30)
Morphology and size controllable rhodium nanoparticles stabilized by a nitrogen-rich polyoxyethylenated derivative have been prepared by reduction of RhCl 3 with NaBH4 in water at room temperature and fully characterized. The flower-like Rh NPs are effective and recyclable catalysts for the stereoselective hydrosilylation of challenging internal alkynes and diynes, affording the (E)-vinylsilanes in quantitative yields for a wide range of substrates. The insolubility of the nanocatalyst in diethyl ether allows its easy separation and recycling.
Hydrosilylation of internal alkynes catalyzed by tris- Imidazolium salt-Stabilized palladium nanoparticles
Planellas, Marc,Guo, Wusheng,Alonso, Francisco,Yus, Miguel,Shafir, Alexandr,Pleixats, Roser,Parella, Teodor
supporting information, p. 179 - 188 (2014/03/21)
Palladium nanoparticles stabilized with tris-imidazolium tetrafluoroborates catalyze the stereoselective hydrosilylation of internal alkynes in a dry inert atmosphere to give (E)-vinylsilanes in excellent yields. In the presence of controlled amounts of water a transfer hydrogenation reaction takes place with the formation of (Z)-alkenes or the corresponding alkanes.
High oxidation state rhodium and iridium bis(silyl)dihydride complexes supported by a chelating pyridyl-pyrrolide ligand
McBee, Jennifer L.,Escalada, Jose,Tilley, T. Don
scheme or table, p. 12703 - 12713 (2010/01/30)
New rhodium and iridium complexes containing the bidentate ligand 3,5-diphenyl-2-(2-pyridyl)pyrrolide (PyPyr) were prepared. The bis(ethylene) complex (PyPyr)Rh(C2H4)2 (3) reacted with HSiEt 3, HSiPh3, and HSitBuPh2 to produce the 16-electron Rh(V) bis(silyl)dihydrides (PyPyr)Rh(H)2(SiEt 3)2 (8), (PyPyr)Rh-(H)2(SiPh3) 2 (9), and (PyPyr)Rh(H)2(SitBuPh 2)2 (10), respectively. The analogous Ir(V) bis(silyl)dihyride (PyPyr)Ir(H)2(SiPh3)2 (11) has also been synthesized. X-ray crystallography reveals that 9-11 adopt a coordination geometry best described as a bicapped tetrahedron. Silane elimination from 9 and 10 occurred in the presence of either HSiEt3 or PPh3. Mechanistic studies of the silane exchange process involving 10 and free HSiEt3 (to give 8) indicate that this process occurs by rate-limiting reductive elimination of HSitBuPh2 from 10 to generate a 14-electron Rh(III) intermediate of the type (PyPyr)Rh(H)(Si tBuPh2).
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 (2007/10/03)
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
The differing modes of reaction of 1-(8-dimethylamino-1-naphthyl)-1-hydrodisilane and 1-(1-naphthyl)-1-hydrodisilane in nickel-catalyzed reactions with acetylene: Formation of a pseudo-pentacoordinate silole via Si-Si bond cleavage vs. hydrosilation without Si-Si bond cleavage
Tamao, Kohei,Asahara, Masahiro,Kawachi, Atsushi
, p. 325 - 334 (2007/10/03)
Pseudo-pentacoordinate 1-(8-dimethylamino-1-naphthyl)-1-hydrodisilanes 1 and 2 and the tetracoordinate counterpart 3 have been prepared. In the presence of an Ni(0) complex as catalyst, 1 and 2 undergo degradation to generate a silylene species and a hydrosilane. The complex with Ni of the silylene species from 1 has been trapped with an excess of diphenylacetylene to give a pseudo-pentacoordinate silole 4. The X-ray structure of 4 indicates that this silole occupies two pseudo-equatorial positions. In contrast, the tetracoordinate hydrodisilane 3 undergoes hydrosilation without Si-Si bond cleavage.
