Catalytic Silylation: SiO2-supported gold nanoparticle catalysts showed high activity for silylation of C(sp2)−H bond to afford a series of aryl and heteroarylsilanes. Detailed mechanistic investigation revealed that O2-activated Au NPs and ethers cooperatively functioned to generate silyl cation, thereby enabling electrophilic C−Si bond formation.
TRANSITION-METAL-FREE SILYLATION OF AROMATIC COMPOUNDS
申请人:CALIFORNIA INSTITUTE OF TECHNOLOGY
公开号:US20140094607A1
公开(公告)日:2014-04-03
The present invention describes chemical systems and methods for silylating aromatic organic substrates, said system comprising a mixture of (a) at least one organosilane and (b) at least one strong base, said system being substantially free of a transition-metal compound, and said methods comprising contacting a quantity of the organic substrate with a mixture of (a) at least one organosilane and (b) at least one strong base, under conditions sufficient to silylate the aromatic substrate; wherein said system is substantially free of a transition-metal compound.
Transition-metal-free silylation of aromatic compounds
申请人:California Institute of Technology
公开号:US09000167B2
公开(公告)日:2015-04-07
The present invention describes chemical systems and methods for silylating aromatic organic substrates, said system comprising a mixture of (a) at least one organosilane and (b) at least one strong base, said system being substantially free of a transition-metal compound, and said methods comprising contacting a quantity of the organic substrate with a mixture of (a) at least one organosilane and (b) at least one strong base, under conditions sufficient to silylate the aromatic substrate; wherein said system is substantially free of a transition-metal compound.
[EN] SILYLATION OF AROMATIC HETEROCYCLES BY EARTH ABUNDANT TRANSITION-METAL-FREE CATALYSTS<br/>[FR] SILYLATION D'HÉTÉROCYCLES AROMATIQUES PAR DES CATALYSEURS ABONDANTS SUR TERRE, EXEMPTS DE MÉTAUX DE TRANSITION
申请人:CALIFORNIA INST OF TECHN
公开号:WO2016022624A9
公开(公告)日:2016-03-10
Silylation of C–H bonds in aromatic heterocycles by an Earth-abundant metal catalyst
作者:Anton A. Toutov、Wen-Bo Liu、Kerry N. Betz、Alexey Fedorov、Brian M. Stoltz、Robert H. Grubbs
DOI:10.1038/nature14126
日期:2015.2.5
and complex molecule synthesis, because these compounds have very useful physicochemical properties. Many of the methods now used to construct heteroaromatic C–Si bonds involve stoichiometric reactions between heteroaryl organometallic species and silicon electrophiles or direct, transition-metal-catalysed intermolecular carbon–hydrogen (C–H) silylation using rhodium or iridium complexes in the presence