Výsledky vyhledávání - "Keith J. Weller"

Bis(imino)pyridine Cobalt-Catalyzed Dehydrogenative Silylation of Alkenes: Scope, Mechanism, and Origins of Selective Allylsilane Formation

Autor: Crisita Carmen Hojilla Atienza, Keith J. Weller, Susan A. Nye, Kenrick M. Lewis, Johannes G.P. Delis, Aroop Kumar Roy, Julie L. Boyer, Tianning Diao, Paul J. Chirik

Publikováno v: Journal of the American Chemical Society. 136:12108-12118

The aryl-substituted bis(imino)pyridine cobalt methyl complex, ((Mes)PDI)CoCH3 ((Mes)PDI = 2,6-(2,4,6-Me3C6H2-N═CMe)2C5H3N), promotes the catalytic dehydrogenative silylation of linear α-olefins to selectively form the corresponding allylsilanes w

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::08a7c3645a1094bbffb6b7291de51f97
https://doi.org/10.1021/ja5060884

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High-Selectivity Bis(imino)pyridine Iron Catalysts for the Hydrosilylation of 1,2,4-Trivinylcyclohexane

Autor: Johannes G.P. Delis, Richard W. Cruse, Keith J. Weller, Julie L. Boyer, Susan A. Nye, Crisita Carmen Hojilla Atienza, Aaron M. Tondreau, Paul J. Chirik, Kenrick M. Lewis

Publikováno v: ACS Catalysis. 2:2169-2172

Aryl-substituted bis(imino)pyridine iron dinitrogen complexes are active for the hydrosilylation of 1,2,4-trivinylcyclohexane with tertiary alkoxy silanes, a process used in the manufacture of low rolling resistance tires. The iron compounds exhibit

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::71e632efbaa528aa1d7ba0af98b206bb
https://doi.org/10.1021/cs300584b

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Iron Catalysts for Selective Anti-Markovnikov Alkene Hydrosilylation Using Tertiary Silanes

Autor: Crisita Carmen Hojilla Atienza, Keith J. Weller, Johannes G.P. Delis, Susan A. Nye, Paul J. Chirik, Aaron M. Tondreau, Kenrick M. Lewis

Publikováno v: Science. 335:567-570

An Iron Hand for Silicon Carbon-silicon bonds are integral to the structure of the silicone materials widely used in adhesives, cosmetics, and numerous other industrial and consumer products. Generally, platinum-based catalysts have performed best in

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1162d1da766e34697a030054df713cae
https://doi.org/10.1126/science.1214451

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Pyridine Degradation Intermediates as Models for Hydrodenitrogenation Catalysis: Preparation and Properties of a Metallapyridine Complex

Autor: David E. Wigley, Paula M. Briggs, Igor Filippov, Keith J. Weller

Publikováno v: Organometallics. 17:322-329

We report the preparation, structure, and reactions of a stable metallapyridine complex of tantalum prepared in the course of model studies of hydrodenitrogenation (HDN) reactions. is isolated upon...

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::076b8199bc355078ad9d6fee142007e0
https://doi.org/10.1021/om970749r

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Isolation and characterization of a monomeric metallapyridine complex: Models for pyridine hydrodenitrogenation intermediates

Autor: Igor Filippov, Keith J. Weller, David E. Wigley, Paula M. Briggs

Publikováno v: Journal of Organometallic Chemistry. 528:225-228

We report the preparation of a stable metallapyridine complex of tantalum prepared in the coarse of model studies of hydrodenitrogenation reactions. Monomeric Ta(=NC t Bu=CHC t Bu=CH ︹ )(OAr) 2 ( THF ) ( 5 ⋅ THF ) is isolated upon thermolyzing th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7fc884b19f6991fffe4f7c7c4b6d19df
https://doi.org/10.1016/s0022-328x(96)06612-0

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Homogeneous models for hydrodenitrogenation catalysis

Autor: Keith J. Weller, Steven D. Gray, Peter A. Fox, David E. Wigley

Publikováno v: Polyhedron. 16:3139-3163

Hydrodenitrogenation (HDN) catalysis is the process of removing nitrogen from petroleum feed-stocks in the form of NH3 to provide more processable and environmentally compatible liquid fuels. In practice, HDN is carried out simultaneously with other

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3d9627984c7fae468bb3775816928f37
https://doi.org/10.1016/s0277-5387(96)00610-9

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Carbon-Nitrogen Bond Cleavage in an .eta.2(N,C)-Pyridine Complex Induced by Intramolecular Metal-to-Ligand Alkyl Migration: Models for Hydrodenitrogenation Catalysis

Autor: Michael A. Bruck, Keith J. Weller, Paula M. Briggs, David E. Wigley, Steven D. Gray

Publikováno v: Journal of the American Chemical Society. 117:10678-10693

The reaction of the {eta}{sup 2}(N,C)-pyridine complex with LiBEt{sub 3}H affords the C-N bond scission product (2). The reactions of (1) with carbon nucleophiles RLi or RMgX provide the alkyl derivatives [R = Me (3), Et (4), {sup n}Pr (5), {sup n}Bu

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b882a49567d3671950dbf6be0ffc27f3
https://doi.org/10.1021/ja00148a010

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Quinoline binding mode as a function of oxidation state in aryloxide-supported tantalum complexes: Models for hydrodenitrogenation catalysis

Autor: David P. Smith, Steven D. Gray, Richard P. Kingsborough, Keith J. Weller, Michael A. Bruck, David E. Wigley, Kevin D. Allen

Publikováno v: Polyhedron. 14:3315-3333

The heterocyclic complexes [η 1 ( N )-QUIN]Ta(OAr) 3 Cl 2 ( 1 ) and [η 1 ( N )-6MQ] Ta(OAr) 3 Cl 2 ( 2 ) (where Ar = 2,6-diisopropylphenyl, QUIN = quinoline, and 6MQ = 6-methylquinoline) are prepared from Ta(OAr) 3 Cl 2 (OEt 2 ) and QUIN or 6MQ in

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::72b79a9656aed440868941546d8107b4
https://doi.org/10.1016/0277-5387(95)85013-9

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