51276-64-3Relevant academic research and scientific papers
Electrophilic Organobismuth Dication Catalyzes Carbonyl Hydrosilylation
Kannan, Ramkumar,Balasubramaniam, Selvakumar,Kumar, Sandeep,Chambenahalli, Raju,Jemmis, Eluvathingal D.,Venugopal, Ajay
supporting information, p. 12717 - 12721 (2020/09/09)
Bismuth compounds are gaining importance as potential alternatives to transition-metal complexes and electron deficient lighter p-block compounds in homogeneous catalysis. Computational analysis on the two-coordinate [(Me2NC6H4)Bi]2+ possessing three electrophilic sites is experimentally evidenced by the isolation of [{Me2NC6H4}Bi{OP(NMe2)3}3][B(3,5-C6H3Cl2)4]2. These observations led us to generate dicationic organobismuth catalyst, [(Me2NC6H4)Bi(L)3]2+ (L=aldehyde/ketone), evidenced by NMR spectroscopy in solution and by single-crystal X-ray diffraction in the solid state. It efficiently catalyzes hydrosilylation of aldehydes and ketones resulting in silyl ethers as the only products in high yields. Our investigations support a carbonyl activation mechanism at the bismuth center followed by Si?H addition.
Hydrosilylation of Carbonyls Catalyzed by Hydridoborenium Borate Salts: Lewis Acid Activation and Anion Mediated Pathways
Rawat, Sandeep,Bhandari, Mamta,Porwal, Vishal Kumar,Singh, Sanjay
supporting information, p. 7195 - 7203 (2020/05/18)
The electronically unsaturated three-coordinated hydridoborenium cations [LBH]+[HB(C6F5)3]-(1) and [LBH]+[B(C6F5)4]-(2), supported by a bis(phosphinimino)amide ligand, were found to be excellent catalysts for hydrosilylation of a range of aliphatic and ar
Carbonyl and olefin hydrosilylation mediated by an air-stable phosphorus(iii) dication under mild conditions
Andrews, Ryan J.,Chitnis, Saurabh S.,Stephan, Douglas W.
supporting information, p. 5599 - 5602 (2019/05/21)
The readily-accessible, air-stable Lewis acid [(terpy)PPh][B(C6F5)4]21 is shown to mediate the hydrosilylation of aldehydes, ketones, and olefins. The utility and mechanism of these hydrosilylations are considered.
A Versatile Iridium(III) Metallacycle Catalyst for the Effective Hydrosilylation of Carbonyl and Carboxylic Acid Derivatives
Corre, Yann,Rysak, Vincent,Trivelli, Xavier,Agbossou-Niedercorn, Francine,Michon, Christophe
supporting information, p. 4820 - 4826 (2017/09/07)
A versatile iridium(III) metallacycle catalysed rapidly and selectively the reduction of a large array of challenging esters and carboxylic acids as well as various ketones and aldehydes. The reactions proceeded in high yields at room temperature by hydrosilylation followed by desilylation. Although the reactions of various aldehydes and ketones resulted exclusively in alcohols, the hydrosilylation of esters led to alcohols or ethers, depending on the type of substrate. Regarding the carboxylic acids, again the nature of the reagent controlled the outcome of the hydrosilylation reaction, either alcohols or aldehydes being formed.
A mild and highly efficient method for the preparation of silyl ethers using Fe(HSO4)3/Et3N by chlorosilanes
Abri, Abdolreza,Assadi, Mohammad Galeh,Pourreza, Samira
, p. 1449 - 1454 (2013/03/13)
Avery efficient and mild procedure for preparation of silyl ethers from benzylic, allylic, propargilic alcohols, phenols, naphtoles and some of phenolic drugs with trimethylsilylchloride (TMSCl), triethylsilylchloride (TESCl) and t-buthyldimethylsilyl chloride (TDSCl) ethers in the presence of Fe(HSO 4)3/Et3N in roomtemperature in excellent yields is reported. This procedure also allows the excellent selectivity for silylation of alcohols and phenols.
Tandem deuteration/hydrosilylation reactions catalyzed by a rhodium carbene complex under solvent-free conditions
Egbert, Jonathan D.,Nolan, Steven P.
supporting information; experimental part, p. 2794 - 2796 (2012/04/23)
The complex [Rh(ItBu)2HCl] has been shown to be an active catalyst in the hydrosilylation of carbonyl and imine complexes. This reactivity, combined with the previously reported H/D exchange catalyzed by these complexes allows for a
Silylation of primary alcohols with recyclable ruthenium catalyst and hydrosilanes
Kim, Sungjin,Kwon, Min Serk,Park, Jaiwook
supporting information; experimental part, p. 4573 - 4575 (2010/09/14)
The silylation of primary alcohols was achieved using hydrosilanes and a recyclable ruthenium catalyst without additives under mild conditions. Notably, this catalyst system is effective for the silylation of alcohols having haloaryl groups, which were in
