2290-39-3Relevant academic research and scientific papers
Hydrosilylation of carbonyls over electron-enriched Ni sites of intermetallic compound Ni3Ga heterogeneous catalyst
Takayama, Tomoaki,Kariya, Rio,Nakaya, Yuki,Furukawa, Shinya,Yamazoe, Seiji,Komatsu, Takayuki
supporting information, p. 4239 - 4242 (2021/05/05)
Nanoparticulate intermetallic compound Ni3Ga supported on SiO2has emerged as a highly efficient catalyst for the hydrosilylation of carbonyls, such as aldehydes and ketones, at room temperature. Formation of electron-enriched Niviaal
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 epoxides catalyzed by a cationic η1- silane iridium(iii) complex
Park, Sehoon,Brookhart, Maurice
supporting information; experimental part, p. 3643 - 3645 (2011/05/04)
Cationic silane complex 2, catalyzes the hydrosilylation of epoxides and cyclic ethers to give the silyl-protected alcohols, regioselectively. A mechanistic study shows that the epoxide undergoes isomerization to the ketone, followed by hydrosilylation.
Alcoholysis Equilibria of Triethylalkoxysilanes Catalyzed by Iodine or Iodine Monobromide
Ito, Katsuko,Ibaraki, Takeshi
, p. 2973 - 2975 (2007/10/02)
The equilibrium constants K of alcoholysis of triethylalkoxysilanes were determined at 20 degC and 40 degC.Iodine monobromide was used to promote the reactions associated with the tertiary alkoxyl groups, while the other reactions proceeded in the presence of iodine.The K values of the reaction systems with ethoxyl or propoxyl-primary, secondary, and tertiary alkoxyl pairs were 1 or above, about 0.5, and about 0.05, respectively.These values reflect the extent of the binding abilities of the alkoxyl groups to silicon, which is in the expected order of primary>secondary>tertiary alkoxyl groups.A mechanism is postulated for the reaction which involves participation by the iodine or iodine monobromide.
