Synthesis of nitrogen and sulfur co-doped hierarchical porous carbons and metal-free oxidative coupling of silanes with alcohols
作者:Bingfeng Chen、Fengbo Li、Qingqing Mei、Youdi Yang、Huizhen Liu、Guoqing Yuan、Buxing Han
DOI:10.1039/c7cc07931a
日期:——
carbon was prepared by using 2,5-dihydroxy-1,4-benzoquinone as the carbon source, thiourea as the N and S source, and SiO2 particles as the template. Using the material as the catalyst, oxidative coupling of silanes with alcohols was conducted for the first time under metal-free conditions.
The selective dehydrogenative coupling of phenylsilane and alcohols, including primary, secondary, and tertiary alcohols, was smoothly catalyzed by bis(hexafluoroacetylacetonato)copper(II) complex to afford the corresponding mono-alkoxysilanes in good-to-high yield after distillation.
Hydridosilylamido complexes of Ta and Mo isolobal with Berry's zirconocenes: syntheses, β-Si–H agostic interactions, catalytic hydrosilylation, and insight into mechanism
作者:Nicolas A. McLeod、Lyudmila G. Kuzmina、Ilia Korobkov、Judith A. K. Howard、Georgii I. Nikonov
DOI:10.1039/c5dt04548g
日期:——
Group 6 hydrosilylamido complexes of the type R(ArN)MN(tBu)SiMe2–H}X (M = Ta, R = Cp; M = Mo, R = ArN; X = Cl, H, OBn, Me) are described. The various substituents in the X position seem to play the key role in determining the extent of β-agostic interaction with the Si–H bond. The Mo agostic hydrido complex (ArN)2Moη3-N(tBu)SiMe2–H}H is a pre-catalyst for the hydrosilylation of carbonyls. The stoichiometric
Coexistence of Cu(<scp>ii</scp>) and Cu(<scp>i</scp>) in Cu ion-doped zeolitic imidazolate frameworks (ZIF-8) for the dehydrogenative coupling of silanes with alcohols
Recently, metal-ion-doped zeolitic imidazolate frameworks have gained considerable attention for their structure tailorability and potential catalytic applications. Herein, Cu ion-doped ZIF-8 nanocrystals were successfully prepared by the mechanical grinding of Cu(NO3)2, ZnO and 2-methylimidazole (HMeIM) using ethanol as an additive. In contrast to the general view that only Cu(II) is present in Cu-doped