Yazar "Fei, Zhaofu" seçeneğine göre listele

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    Öğe
    Synthesis and characterization of ether-derivatized aminophosphines and their application in C-C coupling reactions
    (Elsevier Science Sa, 2010) Biricik, Nermin; Kayan, Cezmi; Gumgum, Bahattin; Fei, Zhaofu; Scopelliti, Rosario; Dyson, Paul J.; Gurbuz, Nevin
    Four new bis(phosphino) amine ligands (Ph2P)(2)N-C6H3-R, where R = 3,5-OMe (1), 2,5-OMe (2), 2,4-OMe (3) or 3,4-OMe (4), were prepared via aminolysis of the corresponding dimethoxyanilines with 2 equiv. of diphenylphosphine chloride in the presence of triethyl amine. Oxidation of these ligands with aqueous H2O2, elemental S-8 or Se powder afforded the corresponding chalcogen oxides 1a-4a, sulfides 1b-4b and selenides 1c-4c in good yields. Reaction of 1-4 with [MCl2(cod)] (M = Pt, Pd; cod = cycloocta-1,5-diene) in equimolar ratios afforded cis-[MCl2{(Ph2P)(2)N-C6H3-R}] (M = Pt; R = 3,5-OMe 1d, R = 2,5-OMe 2d, R = 2,4-OMe 3d, and R = 3,4-OMe 4d. M = Pd; R = 3,5-OMe 1e, R = 2,5-OMe 2e, R = 2,4-OMe 3e, and R = 3,4-OMe 4e). Similarly, reaction of [Cu(CH3CN)(4)]PF6 with the 1-4 in 1:2 ratio gave [Cu{(Ph2P)(2)N-C6H3-R}(2)]PF6 (R = 3,5-OMe 1f, 2,5-OMe 2f, 2,4-OMe 3f and 3,4-OMe 4f). All new compounds were fully characterized by spectroscopy and elemental analysis and the molecular structures of seven representative compounds were determined by single-crystal X-ray crystallography. In addition, the palladium complexes were investigated as pre-catalysts in C-C coupling reactions. (C) 2009 Elsevier B.V. All rights reserved.
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    Öğe
    Synthesis and characterizations of N,N-bis(diphenylphosphino)ethylaniline derivatives and X-ray crystal structure of palladium (II), platinum (II) complexes
    (Pergamon-Elsevier Science Ltd, 2008) Durap, Feyyaz; Biricik, Nermin; Guemguem, Bahattin; Oezkar, Saim; Ang, Wee Han; Fei, Zhaofu; Scopelliti, Rosario
    N,N-Bis(diphenylphosphino)ethylaniline compounds, [Ph2P](2)N-C6H4-C2H5, with ethyl groups at the ortho- and para-positions have been synthesized. Oxidation of the aminophosphines with hydrogen peroxide, elemental sulfur and selenium gave the corresponding oxides, sulfides and selenides [Ph2P(E)](2)N-C6H4-C2H5 (E = O, S, Se). Complexes [MCl2{(Ph2P)(2)N-C6H4-(C2H5)}] (M = Pd, Pt) and [Cu{(Ph2P)(2)N-C6H4-C2H5)(2)]PF6 were obtained by the reaction of NN-bis(diphenylphosphino)ethylaniline with [MCl2(COD)] (M = Pd, Pt) and (Cu(MeCN)(4)]PF6. The new compounds were characterized by NMR, IR spectroscopy and microanalysis. In addition, representative solid-state structures of the palladium and platinum complexes were determined using single crystal X-ray diffraction analyses. (C) 2007 Elsevier Ltd. All rights reserved.
  • [ X ]
    Öğe
    Synthesis and reactivity of N,N-bis(diphenylphosphino)dimethylaniline compounds
    (Springer, 2007) Biricik, Nermin; Durap, Feyyaz; Gumgum, Bahattin; Fei, Zhaofu; Scopelliti, Rosario
    New chalcogenides and complexes of N,N-bis(diphenylphosphino)dimethylanilines were prepared by the reaction of N,N-bis(diphenylphosphino)dimethylaniline ligands with aqueous H2O2, elemental S and Se and transition metal complexes based on Cu, Pd and Pt. All the new compounds have been characterised by spectroscopy and the molecular structures of the three complexes of N,N-bis(diphenylphosphino)dimethylanilines have been determined by X-ray crystallography.