Air-initiated hydrosilylation of unactivated alkynes and alkenes and dehalogenation of halohydrocarbons by tris(trimethylsilyl)silane under solvent-free conditions
A highly efficient air-initiated hydrosilylation of unactivated alkynes and alkenes and dehalogenation of halohydrocarbons with tris(trimethylsilyl)silane ((TMS)3SiH) as a reducing agent has been established under solvent-free conditions. These observations demonstrate that the potential and versatility of air to function as a competent initiator for Si–H bond activations. It can rival organic initiators
Vinyl tris(trimethylsilyl)silanes: substrates for Hiyama coupling
作者:Zhizhong Wang、Jean-Philippe Pitteloud、Lucresia Montes、Magdalena Rapp、Djenny Derane、Stanislaw F. Wnuk
DOI:10.1016/j.tet.2008.03.024
日期:2008.5
The oxidative treatment of vinyl tris(trimethylsilyl)silanes with hydrogen peroxide in aqueous sodium hydroxide in tetrahydrofuran generates reactive silanol or siloxane species that undergo Pd-catalyzed cross-couplings with aryl, heterocyclic and alkenyl halides in the presence of Pd(PPh(3))(4) and tetrabutylammonium fluoride. Hydrogen peroxide and base are necessary for the coupling to occur while
Different radical initiation techniques of hydrosilylation reactions of multiple bonds in water: dioxygen initiation
作者:Al Postigo、Norma Sbarbati Nudelman
DOI:10.1002/poc.1703
日期:——
reactions of organic compounds bearing CCmultiplebonds is due to the need to come up with newer and more effcient methods to effect this reaction, on account of its applications on surface chemistry. In the past, when organic solvents were employed, thermal and photochemicalmethods for the chain initiation reaction have been documented (thermal and photochemical decomposition of azo compounds). We