19116-65-5Relevant academic research and scientific papers
A method of olefin addition reaction of silicon with hydrogen
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Paragraph 0045; 0046, (2017/04/03)
The invention relates to the field of organic chemical synthesis, provides a method for alkene hydrosilylation and aims to solve the problems of low catalyst reaction activity and product selectivity. The method for alkene hydrosilylation comprises the fo
Graphite oxide-supported Karstedt catalyst for the hydrosilylation of olefins with triethoxysilane
Rao, Fuyuan,Deng, Shengjun,Chen, Chao,Zhang, Ning
, p. 1 - 5 (2014/01/06)
A graphite oxide-supported Karstedt heterogeneous catalyst was synthesized from vinyltriethoxysilane via immobilization on graphite oxide, followed by reacting with chloroplatinic acid. The samples were characterized by FT-IR, TGA, ICP-AES, XRD and TEM te
Well-defined NHC-rhodium hydroxide complexes as alkene hydrosilylation and dehydrogenative silylation catalysts
Truscott, Byron J.,Slawin, Alexandra M. Z.,Nolan, Steven P.
, p. 270 - 276 (2013/02/25)
Alkene hydrosilylation and dehydrogenative silylation reactions, mediated by [Rh(cod)(NHC)(OH)] complexes (cod = 1,5-cyclooctadiene; NHC = N-heterocyclic carbene) are described. The study details a comparison of the catalytic activity and steric characteristics of four rhodium complexes bearing different NHC ligands. The novel [Rh(cod)(Ii-PrMe)(OH)] complex (Ii-PrMe = 1,3-diisopropyl-4,5-dimethylimidazol-2-ylidine) was designed to improve the reactivity of Rh(i)-hydroxides and proved to be a successful promoter of hydrosilylation and dehydrogenative silylation, displaying good stereo- and regiocontrol. The Royal Society of Chemistry 2013.
Synthesis of rhodium N-heterocyclic carbene complexes and their catalytic activity in the hydrosilylation of alkenes in ionic liquid medium
Li, Jiayun,Peng, Jiajian,Bai, Ying,Lai, Guoqiao,Li, Xiaonian
experimental part, p. 2116 - 2121 (2011/06/22)
Rhodium complexes bearing N-heterocyclic carbene (NHC) ligands were prepared from bis(η4-1,5-cyclooctadiene) dichlorodirhodium and 1-alkyl-3-methylimidazolium-2-carboxylate, and the catalytic properties of rhodium complexes prepared in the hydrosilylation of alkenes in ionic liquid media were investigated. It was found that both the catalytic activity and selectivity of the rhodium complexes bearing NHC ligands were influenced by the attached substituents of the imidazolium cation. Additionally, rhodium complexes bearing NHC ligands in ionic liquid BMimPF6 could be reused without noticeable loss of catalytic activity and selectivity.
Hydrosilylation reactions catalyzed by rhodium complexes with phosphine ligands functionalized with imidazolium salts
Li, Jiayun,Peng, Jiajian,Wang, Diliang,Bai, Ying,Jiang, Jianxiong,Lai, Guoqiao
experimental part, p. 263 - 268 (2011/02/17)
Hydrosilylation reactions of styrene with triethoxysilane catalyzed by rhodium complexes with phosphine ligands functionalized with imidazolium salts are reported. In comparison with Wilkinson's catalyst, Rh(PPh3) 3Cl, all of the present rhodium complexes with phosphines functionalized with imidazolium salts exhibit higher catalytic activity and selectivity.
Rh(pph3)3cl/tetrakis(dialkylamino)phosphonium salts as thermoregulated and recyclable catalytic system for hydrosilylation reaction
Wang, Diliang,Li, Jiayun,Peng, Jiajian,Bai, Ying,Lai, Guoqiao
experimental part, p. 2258 - 2266 (2012/03/27)
Eleven tetrakis(dialkylamino)phosphonium salts have been prepared and were used as "soft" catalyst supports for the hydrosilylation reaction of styrene with triethoxysilane catalyzed by Rh(PPh3)3Cl. Among the Rh(PPh3)3Cl/tetrakis(dialkylamino)phosphonium salts tested, the best catalytic activity and selectivity in favor of the β-adduct were obtained when {[(C4H9) 2N]3[(C8H17)2N]P}PF 6 was used as the support, and Rh(PPh3)3Cl/ {[(C4H9)2N]3[(C8H 17)2N]P}PF6 catalyst system can be reused more than 10 times without noticeable loss of catalytic activity and selectivity. Copyright Taylor & Francis Group, LLC.
Use of carboxylated polyethylene glycol as promoter for platinum-catalyzed hydrosilylation of alkenes
Bai, Ying,Peng, Jiajian,Li, Jiayun,Lai, Guoqiao
experimental part, p. 400 - 405 (2012/04/17)
Several carboxylated polyethylene glycols as promoters were applied in the platinum-catalyzed hydrosilylation of alkenes, and polyethylene glycol maleic acid monoester as a promoter for hydrosilylation was investigated. It was found that an improvement of the selectivity was achieved in the presence of carboxylated polyethylene glycol, and the β-adduct as major product was obtained. Additionally, the effect of alkenes and silanes employed on the selectivity was investigated; better selectivity could be achieved when (EtO)3SiH was used as the hydride than ClMe2SiH.
Hydrosilylation catalysed by a rhodium complex in a supercritical CO 2/ionic liquid system
Li, Jiayun,Peng, Jiajian,Zhang, Guodong,Bai, Ying,Lai, Guoqiao,Li, Xiaonian
experimental part, p. 1330 - 1334 (2010/09/17)
The hydrosilylation of alkenes in a supercritical CO2 (scCO 2)/ionic liquid (IL) system was investigated. Rh(PPh 3)3Cl exhibited excellent catalytic activity and selectivity. KOtBu was used as an additive, and no hydrogenation by-product (alkane) was detected in the scCO2/IL system. During hydrosilylation in the scCO2/IL system, the reactants were possibly transferred into the IL phase by scCO2, in which the catalyst was dissolved. The products can be flushed with scCO2 after the reaction and the catalyst/IL system reused.
PREPARATION AND STUDY OF NOVEL SILATRANE DERIVATIVES
Hencsei, P.,Bihatsi, L.,Kovacs, I.,Szalay, E.,Karsai, E. B.,at al.
, p. 261 - 268 (2007/10/02)
The following silatrane derivatives have been prepared: , where R=3-ClC6H4O, 2,4-(NO2)2C6H3O, 2,5-(NO2)2C6H3O, 4-ClC6H4CH2CH2, 4-BrC6H4, C3H7.Infrared, (1)H NMR and mass spectra of these compounds have been determined: for three compounds Raman spectra
