An Effective Route to Cycloruthenated N-Ligands under Mild Conditions
摘要:
Cycloruthenated complexes of the type [(eta(6)-C6H6)Ru(C boolean AND N)CH3CN]+PF6- (C boolean AND N = C6H4-2-CH2NMe2, (R)-(+)-C6H4-2-CH(Me)NMe2, C6H2-3, 4-(OCH3)(2)-2-CH2NMe2) are readily obtained by the intramolecular C-H activation of N,N-dimethylbenzylamine derivatives with [(eta(6)-C6H6)RuCl2](2) in up to 53% isolated yields. Under similar conditions, 8-methylquinoline also Led to a cycloruthenated complex, though in, lower yield (12%) and after a longer reaction, time. Reaction with the optically active (R)-(+)-N,N-dimethyl-1-phenylethylamine led to a 48% diastereomeric excess in the cycloruthenated product. Under the same conditions, and after 14 and 65 h of reaction time, respectively, 2-phenyl- and 2-benzylpyridine are cyclometalated, leading to the formation of complexes in which the benzene ligand has been substituted by three acetonitriles: [(C boolean AND N)Ru(CH3CN)(4)]+PF6- (C boolean AND N = C6H4-2-C5H4N, C6H4-2-(CH2)-C5H4N) were obtained in. 40 and 24% isolated yields, respectively.
Heterodinuclear Arene Ruthenium Complexes Containing a Glycine-Derived Phosphinoferrocene Carboxamide: Synthesis, Molecular Structure, Electrochemistry, and Catalytic Oxidation Activity in Aqueous Media
respect to each other. All complexes showed high activity for the catalytic oxidation of secondary alcohols with tert-butylhydroperoxide to give ketones in aqueous media. The most active catalyst was obtained from the neutral p-cymene complex 4b, showing a catalytic turnover frequency of 13 200 h–1 at room temperature for the oxidation of 1-phenylethanol at a substrate/catalyst ratio of 100 000.
Chiral phosphine complexes of ruthenium(II) arenes
作者:Deryn E. Fogg、Brian R. James
DOI:10.1016/0022-328x(93)83387-b
日期:1993.12
Chiral, arene-containing complexes of ruthenium(II) based on the phosphines chiraphos and diop are reported, as well as improved routes to some known analogues containing binap or the achiral phosphines Ph2P(CH2)nPPh2(n = 2, dppe; n = 4, dppb).
aminophosphine complexes trans, cis-[RuCl2(H(Bz)NCH2CH2PPh2-N,P)2] (1), trans, cis-[RuCl2(H2NCH2CH2PPh2-N,P)2] (3) and [(η6-C6H6)Ru(PPh2CH2CH2NMe2-N,P)Cl][PF6] (5) are described. Complexes 1 and 3 are octahedral and contain a marked distortion of the ClRuCl axis from linearity. Complex 3 undergoes facile chelatering-opening in DMSO and CH3CN solutions to give complexes containing one chelated aminophosphine
Freedman, Daniel A.; Magneson, David J.; Mann, Kent R., Inorganic Chemistry, 1995, vol. 34, # 10, p. 2617 - 2624
作者:Freedman, Daniel A.、Magneson, David J.、Mann, Kent R.
DOI:——
日期:——
Mononuclear Ruthenium and Hetero-Tetranuclear Ruthenium-Silver Complexes Containing the Unsymmetrical Bidentate Ligands R2P(CH2)nER′2 (n = 1, 2; E = P, As) as Chelating or Bridging Units
作者:Guido Fries、Birgit Weberndörfer、Kerstin Ilg、Helmut Werner