- Transition Metal Cooperative Lewis Pairs Using Platinum(0) Diphosphine Monocarbonyl Complexes as Lewis bases
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The platinum(0)-diphosphine complex [Pt(CO)(L1)] (3, where L1 = 1,2-C6H4(CH2PtBu2)2) and its diphosphinite analogue [Pt(CO)(L2)] (11, where L2 = 1,2-C6H4(OPt/sup
- Mistry, Krishna,Pringle, Paul G.,Sparkes, Hazel A.,Wass, Duncan F.
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p. 468 - 477
(2020/02/29)
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- General and selective copper-catalyzed reduction of tertiary and secondary phosphine oxides: Convenient synthesis of phosphines
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Novel catalytic reductions of tertiary and secondary phosphine oxides to phosphines have been developed. Using tetramethyldisiloxane (TMDS) as a mild reducing agent in the presence of copper complexes, PO bonds are selectively reduced in the presence of other reducible functional groups (FGs) such as ketones, esters, and olefins. Based on this transformation, an efficient one pot reduction/phosphination domino sequence allows for the synthesis of a variety of functionalized aromatic and aliphatic phosphines in good yields.
- Li, Yuehui,Das, Shoubhik,Zhou, Shaolin,Junge, Kathrin,Beller, Matthias
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supporting information; experimental part
p. 9727 - 9732
(2012/07/14)
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- Modification of ligand properties of phosphine ligands for C-C and C-N bond-forming reactions
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A series of ligands have been prepared for use in Pd-catalysed coupling reactions to form C-C and C-N bonds; significant differences are exhibited by similar ligands containing different phosphorus substituents.
- Morris, David J.,Docherty, Gordon,Woodward, Gary,Wills, Martin
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p. 949 - 953
(2008/02/04)
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- Low pressure rhodium catalyzed hydroformylation of olefins
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The hydroformylation of olefins with rhodium complex catalysts is described. The catalysts employed comprise a rhodium complex with at least one bidentate ligand having a specified structure, STR1 Hydroformylation reactions at relatively low temperatures and pressure and yet with high rates of reaction and high selectivity to aldehyde product are obtained by the practice of the present invention.
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- 209. The Coordination Chemistry of 1,2-Bisbenzene with Nickel(II), Palladium(II), Platinum(II), and Platinum(0) and the X-Ray Crystals Structure of benzene)(C2H4)>
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The preparation of complexes (M = Ni, Pd, and Pt; X = Cl, Br, and I; 1 = 1,2-bisbenzene), , (alkene = C2H4 and CH2 = CHCN), and is reported.Their 1H- and 31P-NMR spectra were recorded and used for structural assignments.The X-ray crystal structure of was determined.It is shown that the P-Pt-P bond angle in this complex differs significantly from those found in related compounds with monodentate phosphines, and that this difference is likely to be due to intramolecular contacts.
- Camalli, Mercedes,Caruso, Francesco,Chaloupka, Stanislav,Leber, Ernest M.,Rimml, Heinrich,Venanzi, Luigi M.
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p. 2263 - 2274
(2007/10/02)
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- Platinum Chloride-Diphosphine-Tin(II) Halide Systems as Active and Selective Hydroformylation Catalysts
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The hydroformylation of 1-alkenes was efficiently catalyzed by PtCl2-diphosphine-SnX2 systems whose diphosphines were 1,4-bis(diphenylphosphino)butane derivatives with rigid ring skeletons.The effects of the structure of diphosphines, the P/Pt atomic ratio, the sort of tin(II) halide or solvent, the reaction variables, and the structure of olefins on the relative rate and the product distribution were investigated.A higher reaction rate than when using HRh(CO)(PPh3)3, and a linearity of aldehydes up to 99percent, were attained.The coordination structure of the effective diphosphines as well as the reasons for the rate enhancement and for the excellent selectivity were discussed.
- Hayashi, Teruyuki,Kawabata, Yasuziro,Isoyama, Toyoshiro,Ogata, Ikuei
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p. 3438 - 3446
(2007/10/02)
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