Chiral bis(oxazoline) ligands. Synthesis of mono- and bi-metallic complexes of nickel and palladium
作者:Abdeslam El Hatimi、Montserrat Gómez、Susanna Jansat、Guillermo Muller、Mercè Font-Bardía、Xavier Solans
DOI:10.1039/a807946c
日期:——
the chiralbis(oxazoline) ligands ortho-, meta-, and para-bis[(4R)-4-ethyl-3,4-dihydrooxazol-2-yl]benzene (A, B, C, respectively) has been studied. Palladium and nickel complexes were synthesized and characterized in solution and in the solid state. With regard to N,N′ co-ordination, A gave bidentate monometallic species, while B and C gave bimetallic compounds, with one or two bridging chiral molecules
Gomez, Montserrat; Jansat, Susanna; Muller, Guillermo, Journal of the Chemical Society. Dalton Transactions (2001), 2001, # 9, p. 1432 - 1439
作者:Gomez, Montserrat、Jansat, Susanna、Muller, Guillermo、Maestro, Miguel A.、Saavedra, Jose Mahia、Font-Bardia, Merce、Solans, Xavier
DOI:——
日期:——
Davenport, Adam J.; Davies, David L.; Fawcett, John, Chemical Communications, 1997, # 24, p. 2347 - 2348
作者:Davenport, Adam J.、Davies, David L.、Fawcett, John、Garratt, Shaun A.、Lad, Latesh、Russell, David R.
DOI:——
日期:——
Cp*rhodium and iridium complexes with bisoxazolines: synthesis, fluxionality and applications as asymmetric catalysts for Diels–Alder reactions
作者:David L Davies、John Fawcett、Shaun A Garratt、David R Russell
DOI:10.1016/s0022-328x(02)01859-4
日期:2002.11
Reaction of the dimers [MCl2CP*](2) (M = Rh, It) with bis-oxazolines [N-N = bis(2-oxazoline) (box), 2,2-bis(2-oxazolinyl)propane (bop), 1,2-bis(2-oxazolinyl)benzene (benbox)] in the presence of NaSbF6 (or KPF6) gives complexes [MCl(N-N)Cp*] [EF6] (E = P or Sb) which have been fully characterised. Treatment of some of these with AgSbF6 generates dications [Rh(OH2)(N-N)Cp*]2(+), some of which are fluxional at room temperature. One of these is an enantioselective catalyst for the Diels-Alder reaction of methacrolein and cyclopentadiene. Three complexes, [RhCl(Pr-i-box)Cp*][SbF6], [RhCl(Pr-i-bop)Cp*][SbF6] and [RhCl(Et-benbox)Cp*][SbF6] have been characterised by X-ray crystallography. (C) 2002 Elsevier Science B.V. All rights reserved.
Synthesis, crystal structures and catalytic activities of new palladium(II)–bis(oxazoline) complexes
作者:Mansur B. Ibrahim、Imran Malik、S. M. Shakil Hussain、Atif Fazal、Mohammed Fettouhi、Bassam El Ali
DOI:10.1007/s11243-016-0072-1
日期:2016.10
Palladium–bis(oxazoline) complexes (Pd-BOX-A and Pd-BOX-B) were synthesized and characterized by 1H, 13C NMR, IR and elemental analysis. The molecular structures of the complexes were confirmed by single-crystal X-ray analysis. In both cases, the palladium center is coordinated by the nitrogen atoms of the two oxazoline rings and two chloride ligands in a distorted square planar geometry. Despite the fact