The Experts below are selected from a list of 189 Experts worldwide ranked by ideXlab platform
Lee J. Higham - One of the best experts on this subject based on the ideXlab platform.
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Zirconium-Catalyzed Alkene Hydrophosphination and Dehydrocoupling with an Air-Stable, Fluorescent Primary Phosphine
Inorganics, 2016Co-Authors: Christine A. Bange, Lee J. Higham, Neil T. Mucha, Morgan E. Cousins, Abigail C. Gehsmann, Anna Singer, Taylor Truax, Rory WatermanAbstract:Zirconium-catalyzed alkene hydrophosphination and dehydrocoupling with an air-stable, fluorescent Primary Phosphine 8-[(4-phosphino)phenyl]-4,4-dimethyl-1,3,5,7-tetramethyl-2,6-diethyl-4-bora-3a,4a-diaza-s-indacene furnishes fluorescent Phosphine products. Hydrophosphination of the fluorescent Phosphine produces products with a complete selectivity for the secondary product. A key intermediate in catalysis, a zirconium phosphido compound, was isolated.
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Air-stable fluorescent Primary Phosphine complexes of molybdenum and tungsten
Journal of Coordination Chemistry, 2016Co-Authors: Laura H. Davies, Jennifer F. Wallis, Ross W. Harrington, Paul G. Waddell, Lee J. HighamAbstract:AbstractHere we report a study on the reactivity of the fluorescent air-stable Primary Phosphine 8-((4-phosphino)phenyl)-4,4-dimethyl-1,3,5,7-tetramethyl-2,6-diethyl-4-bora-3a,4a-diaza-s-indacene 4 with [Mo(CO)6], [W(CO)6], [Mo(CO)4(piperidine)] and [W(CO)4(piperidine)] which yields the mono-Phosphine [Mo(CO)5(4)] 5, [W(CO)5(4)] 6 and di-Phosphine cis-[Mo(CO)4(4)2] cis-7 and cis-[W(CO)4(4)2] cis-9 complexes as the predominant products. In addition to the characterization of these complexes by multinuclear NMR and IR spectroscopy, and mass spectrometry, the solid-state structures of 6 and cis-7 have also been determined by single-crystal X-ray diffraction. The photophysical properties of the complexes show that the incorporation of the phosphorus ligand has a limited effect on the absorption and emission profile of the Bodipy core and that they retain similar quantum yields to their parent Bodipy dyes. Small quantities of the by-products trans-[Mo(CO)4(4)2] trans-7, cis-[Mo(CO)4(piperidine)(4)] cis-8 and c...
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Zirconium-catalyzed intermolecular hydrophosphination using a chiral, air-stable Primary Phosphine
Dalton transactions (Cambridge England : 2003), 2015Co-Authors: Christine A. Bange, Lee J. Higham, Michael B. Ghebreab, Arne Ficks, Neil T. Mucha, Rory WatermanAbstract:Catalytic hydrophosphination of alkenes using a chiral, air-stable Primary Phosphine, (R)-[2′-methoxy(1,1′-binapthalen)-2-yl]Phosphine, (R)-MeO-MOPH2, proceeds under mild conditions with a zirconium catalyst, [κ5-N,N,N,N,C-(Me3SiNCH2CH2)2NCH2CH2NSiMe2CH]Zr (1), to selectively furnish anti-Markovnikov, air-stable secondary Phosphines or tertiary Phosphines with slight modification of the protocol. An intermediate in the catalysis, [(N3N)Zr(R)-MeO-MOPH] (4), was structurally characterized.
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Primary Phosphine chemistry
Coordination Chemistry Reviews, 2015Co-Authors: James T. Fleming, Lee J. HighamAbstract:Abstract In this review we will consider the developments in the field of Primary Phosphine chemistry over the past 10 years. A significant section is devoted to the number of newly developed air-stable Primary Phosphines, and a DFT-based model will be presented which aims to rationalise the oxidative resistance of certain Primary Phosphines. Chiral and fluorescent examples of Primary Phosphines will be reviewed, along with some interesting examples of reactivity. Finally, a collection of coordination compounds from across the periodic table which contain Primary Phosphines will be highlighted.
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Efficient Multigram Syntheses of Air-Stable, Chiral Primary Phosphine Ligand Precursors via Palladium-Catalyzed Phosphonylation of Aryltriflates
Synthesis, 2012Co-Authors: Arne Ficks, Ross W. Harrington, Connor Sibbald, Stephen Ojo, William Clegg, Lee J. HighamAbstract:Air-stable, chiral Primary Phosphines have been synthesized on a multigram scale. The key synthetic step is an optimized palladium-catalyzed phosphonylation reaction of aryltriflates, which opens up a valuable synthetic route to a chiral scaffold that is easily derivatized into novel Phosphines.
Rory Waterman - One of the best experts on this subject based on the ideXlab platform.
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Zirconium-Catalyzed Intermolecular Double Hydrophosphination of Alkynes with a Primary Phosphine
ACS Catalysis, 2016Co-Authors: Christine A. Bange, Rory WatermanAbstract:Catalytic double hydrophosphination of internal alkynes and Primary Phosphines is possible using a zirconium complex, [κ5-N,N,N,N,C-(Me3SiNCH2CH2)2NCH2CH2NSiMe2CH]Zr (1). The reaction proceeds via stepwise hydrophosphination to give vinyl Phosphine products, which can be isolated or further converted to the respective 1,2-bis(phosphino)ethane (i.e., double hydrophosphination). The catalysis is highly selective for formation of secondary Phosphine products.
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Zirconium-Catalyzed Alkene Hydrophosphination and Dehydrocoupling with an Air-Stable, Fluorescent Primary Phosphine
Inorganics, 2016Co-Authors: Christine A. Bange, Lee J. Higham, Neil T. Mucha, Morgan E. Cousins, Abigail C. Gehsmann, Anna Singer, Taylor Truax, Rory WatermanAbstract:Zirconium-catalyzed alkene hydrophosphination and dehydrocoupling with an air-stable, fluorescent Primary Phosphine 8-[(4-phosphino)phenyl]-4,4-dimethyl-1,3,5,7-tetramethyl-2,6-diethyl-4-bora-3a,4a-diaza-s-indacene furnishes fluorescent Phosphine products. Hydrophosphination of the fluorescent Phosphine produces products with a complete selectivity for the secondary product. A key intermediate in catalysis, a zirconium phosphido compound, was isolated.
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Zirconium-catalyzed intermolecular hydrophosphination using a chiral, air-stable Primary Phosphine
Dalton transactions (Cambridge England : 2003), 2015Co-Authors: Christine A. Bange, Lee J. Higham, Michael B. Ghebreab, Arne Ficks, Neil T. Mucha, Rory WatermanAbstract:Catalytic hydrophosphination of alkenes using a chiral, air-stable Primary Phosphine, (R)-[2′-methoxy(1,1′-binapthalen)-2-yl]Phosphine, (R)-MeO-MOPH2, proceeds under mild conditions with a zirconium catalyst, [κ5-N,N,N,N,C-(Me3SiNCH2CH2)2NCH2CH2NSiMe2CH]Zr (1), to selectively furnish anti-Markovnikov, air-stable secondary Phosphines or tertiary Phosphines with slight modification of the protocol. An intermediate in the catalysis, [(N3N)Zr(R)-MeO-MOPH] (4), was structurally characterized.
Ross W. Harrington - One of the best experts on this subject based on the ideXlab platform.
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Air-stable fluorescent Primary Phosphine complexes of molybdenum and tungsten
Journal of Coordination Chemistry, 2016Co-Authors: Laura H. Davies, Jennifer F. Wallis, Ross W. Harrington, Paul G. Waddell, Lee J. HighamAbstract:AbstractHere we report a study on the reactivity of the fluorescent air-stable Primary Phosphine 8-((4-phosphino)phenyl)-4,4-dimethyl-1,3,5,7-tetramethyl-2,6-diethyl-4-bora-3a,4a-diaza-s-indacene 4 with [Mo(CO)6], [W(CO)6], [Mo(CO)4(piperidine)] and [W(CO)4(piperidine)] which yields the mono-Phosphine [Mo(CO)5(4)] 5, [W(CO)5(4)] 6 and di-Phosphine cis-[Mo(CO)4(4)2] cis-7 and cis-[W(CO)4(4)2] cis-9 complexes as the predominant products. In addition to the characterization of these complexes by multinuclear NMR and IR spectroscopy, and mass spectrometry, the solid-state structures of 6 and cis-7 have also been determined by single-crystal X-ray diffraction. The photophysical properties of the complexes show that the incorporation of the phosphorus ligand has a limited effect on the absorption and emission profile of the Bodipy core and that they retain similar quantum yields to their parent Bodipy dyes. Small quantities of the by-products trans-[Mo(CO)4(4)2] trans-7, cis-[Mo(CO)4(piperidine)(4)] cis-8 and c...
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Efficient Multigram Syntheses of Air-Stable, Chiral Primary Phosphine Ligand Precursors via Palladium-Catalyzed Phosphonylation of Aryltriflates
Synthesis, 2012Co-Authors: Arne Ficks, Ross W. Harrington, Connor Sibbald, Stephen Ojo, William Clegg, Lee J. HighamAbstract:Air-stable, chiral Primary Phosphines have been synthesized on a multigram scale. The key synthetic step is an optimized palladium-catalyzed phosphonylation reaction of aryltriflates, which opens up a valuable synthetic route to a chiral scaffold that is easily derivatized into novel Phosphines.
Arne Ficks - One of the best experts on this subject based on the ideXlab platform.
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Zirconium-catalyzed intermolecular hydrophosphination using a chiral, air-stable Primary Phosphine
Dalton transactions (Cambridge England : 2003), 2015Co-Authors: Christine A. Bange, Lee J. Higham, Michael B. Ghebreab, Arne Ficks, Neil T. Mucha, Rory WatermanAbstract:Catalytic hydrophosphination of alkenes using a chiral, air-stable Primary Phosphine, (R)-[2′-methoxy(1,1′-binapthalen)-2-yl]Phosphine, (R)-MeO-MOPH2, proceeds under mild conditions with a zirconium catalyst, [κ5-N,N,N,N,C-(Me3SiNCH2CH2)2NCH2CH2NSiMe2CH]Zr (1), to selectively furnish anti-Markovnikov, air-stable secondary Phosphines or tertiary Phosphines with slight modification of the protocol. An intermediate in the catalysis, [(N3N)Zr(R)-MeO-MOPH] (4), was structurally characterized.
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Efficient Multigram Syntheses of Air-Stable, Chiral Primary Phosphine Ligand Precursors via Palladium-Catalyzed Phosphonylation of Aryltriflates
Synthesis, 2012Co-Authors: Arne Ficks, Ross W. Harrington, Connor Sibbald, Stephen Ojo, William Clegg, Lee J. HighamAbstract:Air-stable, chiral Primary Phosphines have been synthesized on a multigram scale. The key synthetic step is an optimized palladium-catalyzed phosphonylation reaction of aryltriflates, which opens up a valuable synthetic route to a chiral scaffold that is easily derivatized into novel Phosphines.
Christine A. Bange - One of the best experts on this subject based on the ideXlab platform.
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Zirconium-Catalyzed Intermolecular Double Hydrophosphination of Alkynes with a Primary Phosphine
ACS Catalysis, 2016Co-Authors: Christine A. Bange, Rory WatermanAbstract:Catalytic double hydrophosphination of internal alkynes and Primary Phosphines is possible using a zirconium complex, [κ5-N,N,N,N,C-(Me3SiNCH2CH2)2NCH2CH2NSiMe2CH]Zr (1). The reaction proceeds via stepwise hydrophosphination to give vinyl Phosphine products, which can be isolated or further converted to the respective 1,2-bis(phosphino)ethane (i.e., double hydrophosphination). The catalysis is highly selective for formation of secondary Phosphine products.
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Zirconium-Catalyzed Alkene Hydrophosphination and Dehydrocoupling with an Air-Stable, Fluorescent Primary Phosphine
Inorganics, 2016Co-Authors: Christine A. Bange, Lee J. Higham, Neil T. Mucha, Morgan E. Cousins, Abigail C. Gehsmann, Anna Singer, Taylor Truax, Rory WatermanAbstract:Zirconium-catalyzed alkene hydrophosphination and dehydrocoupling with an air-stable, fluorescent Primary Phosphine 8-[(4-phosphino)phenyl]-4,4-dimethyl-1,3,5,7-tetramethyl-2,6-diethyl-4-bora-3a,4a-diaza-s-indacene furnishes fluorescent Phosphine products. Hydrophosphination of the fluorescent Phosphine produces products with a complete selectivity for the secondary product. A key intermediate in catalysis, a zirconium phosphido compound, was isolated.
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Zirconium-catalyzed intermolecular hydrophosphination using a chiral, air-stable Primary Phosphine
Dalton transactions (Cambridge England : 2003), 2015Co-Authors: Christine A. Bange, Lee J. Higham, Michael B. Ghebreab, Arne Ficks, Neil T. Mucha, Rory WatermanAbstract:Catalytic hydrophosphination of alkenes using a chiral, air-stable Primary Phosphine, (R)-[2′-methoxy(1,1′-binapthalen)-2-yl]Phosphine, (R)-MeO-MOPH2, proceeds under mild conditions with a zirconium catalyst, [κ5-N,N,N,N,C-(Me3SiNCH2CH2)2NCH2CH2NSiMe2CH]Zr (1), to selectively furnish anti-Markovnikov, air-stable secondary Phosphines or tertiary Phosphines with slight modification of the protocol. An intermediate in the catalysis, [(N3N)Zr(R)-MeO-MOPH] (4), was structurally characterized.