Synthesis of bis[palladium(ii)] and bis[platinum(ii)] complexes containing chiral, linear quadridentate ligands with a P2N2 donor set
作者:Justine Bennett、A. David Rae、Geoffrey Salem、Natalie C. Ward、Paul Waring、Kerri Wells、Anthony C. Willis
DOI:10.1039/b106861j
日期:——
A number of bis[palladium(II)] and bis[platinum(II)] complexes of the type [(MCl2)2(μ-quadridentate)] [where M = Pd(II) or Pt(II)] and [(PtClMe)2(μ-quadridentate)] have been prepared containing the linear quadridentate NPPN ligands 1,3-bis[(2-aminophenyl)phenylphosphino]propane, 1; 1,4-bis[(2-aminophenyl)phenylphosphino]butane, 2; 1,5-bis[(2-aminophenyl)phenylphosphino]pentane, 3 [Pd(II) only]; 1,
Nitrogen- <i>vs</i> Carbon-Coordination of the α-Cyano-Stabilized Phosphorus Ylide Ph<sub>3</sub>PC(H)CN. X-ray Crystal Structure of {Pd(dmba)[P(OMe)<sub>3</sub>][N⋮CC(H)PPh<sub>3</sub>]}(ClO<sub>4</sub>)
作者:Larry R. Falvello、Susana Fernández、Rafael Navarro、Esteban P. Urriolabeitia
DOI:10.1021/ic960904e
日期:1997.3.1
NMe(2) group) and the other one is N-bonded (and trans to the C(6)H(4) group). Either by reaction of [Pd(C&arcraise;N)(NCMe)(2)](ClO(4)) with Ph(3)P=C(H)CN (1:1 molar ratio) or by reaction of the bis(ylide) complexes [Pd(C&arcraise;N)(Ph(3)PCHCN)(2)](ClO(4)) with [Pd(C&arcraise;N)(NCMe)(2)](ClO(4)) (1:1 molar ratio), very insoluble materials of stoichiometry [Pd(C&arcraise;N)(Ph(3)PCHCN)(ClO(4))] (9
溶剂化络合物[Pd(C&arcraise; N)(PR'(3))(THF)](ClO(4))[C&arcraise; N = 2-(((二甲基氨基)甲基)苯基-C(1), N或dmba,2-(1-(R)-(二甲基氨基)乙基)苯基-C(1),N或(R)-dmphea; PR'(3)= PPh(3),P(OMe)(3)],化学计量为Ph(3)P = C(H)CN(CPPY)(1:1摩尔比),在低浓度THF中温度下,得到阳离子衍生物Pd(C&arcraise; N)(PR'(3))[N&tbd1; CC(H)= PPh(3)]}(ClO(4)),4-6,其中的叶立德配体在“端腈”配位模式下,N是与Pd(II)中心N配位并与邻金属化的C(6)H(4)基团成N配位的,这对这种内鎓盐是前所未有的。[Pd(C&arcraise; N)(NCMe)(2)](ClO(4))(C&arcraise; N =
IX. 1Mono- and biphasic asymmetric hydroformylation with rhodium catalysts of the diphosphine ligand NAPHOS and its sulfonated derivatives
作者:Robert W. Eckl、Thomas Priermeier、Wolfgang A. Herrmann
DOI:10.1016/s0022-328x(96)06745-9
日期:1997.4
Both enantiomers of the diphosphine 2,2′-bis(diphenylphosphinomethyl)-1, 1′-binaphthyl NAPHOS were prepared by resolution of the racemic P,P′-dioxide and subsequently applied in the rhodium-catalyzed, asymmetric hydroformylation of styrene. Optically active, highly water-soluble derivatives BINAS were prepared by direct sulfonation of the enantiopure diphosphine NAPHOS and applied in aqueous/organic
Resolutions using metal complexes. Resolution of (RR,SS)-ortho-phenylenebis(methylphenylarsine) using internally diastereoisomeric palladium complexes
作者:Nicholas K. Roberts、Stanley Bruce Wild
DOI:10.1039/dt9790002015
日期:——
crystallising internally diastereoisomeric palladium complexes containing the ditertiary arsine and opticallyactive ortho-metallated dimethyl(α-methylbenzyl)amine. The full procedure is described and constitutes the first satisfactory route to opticallyactive ditertiary arsines containingasymmetric arsenic atoms. The opticallyactive ditertiary arsines, α(589 nm, CH2Cl2)± 95°, are air-stable crystalline
Synthesis, resolution and reactions of (±)-1-(dimethylarsino)-2-(methylphenylphosphino)benzene. Crystal and molecular structure of [(S), (S)]-(+)<sub>589</sub>-{2-[1-(dimethylamino)ethyl]phenyl-C<sup>1</sup>,N}[1-(dimethylarsino)-2-(methylphenylphosphino)benzene-As,P]palladium(<scp>II</scp>) hexafluorophosphate
作者:Roy J. Doyle、Geoffrey Salem、Anthony C. Willis
DOI:10.1039/dt9950001867
日期:——
absolute configuration of the R enantiomer of the ligand has been assigned by a crystal-structure determination of the least-soluble diastereomeric complex [(S),(S)]-(+)589-2-[1-(dimethylamino)ethyl]phenyl-C1, N}[1-(dimethylarsino)-2-(methylphenylphosphino)benzene-As,P]palladium(II) hexafluorophosphate. Chemoselective cleavage of the dimethylarsino moiety of the free benzene derivative occurs in the