New Hybrid Bidentate Ligands as Precursors for Smart Catalysts
作者:Frédéric Goettmann、Cédric Boissière、David Grosso、François Mercier、Pascal Le Floch、Clément Sanchez
DOI:10.1002/chem.200500542
日期:2005.12.9
grafted onto various periodically organized mesoporous powders, including a new zirconia/silica mixed oxide synthesized by aerosol techniques. After complexation with the [Rh(CO)2]+ fragment, these materials were revealed to be more active in olefin hydrogenation than their homogeneous counterparts. The reasons for this higher activity are discussed in the light of theoretical modeling. Various surface treatments
Dehydrogenative silylation of terminal alkynes by iridium catalyst
作者:Rie Shimizu、Takamasa Fuchikami
DOI:10.1016/s0040-4039(99)02174-7
日期:2000.2
Dehydrogenativesilylation of terminalalkynes with hydrosilanes proceeds in the presence of iridium catalyst to afford the corresponding silylacetylenes. When phenylacetylene and triethylsilane were heated in dry DME in the presence of Ir4(CO)12–PPh3, (2-phenylethynyl)triethylsilane was obtained in 96% yield with little of hydrosilylated products. The present method is applicable for a variety of