A simple method of regenerating arenerutheniuim dichloride dimers, [RuCl2(η6-arene)]2, from their monomeric adducts with amines or tertiary phosphines, RuCl2(η6-arene)L
The 1,3,5-cyclooctatriene ligand of Ru(1-6-η-cyclooctatriene)(1-2:5-6-η-cyclooctadiene) reacted with ethyne to yield Ru(η4, η2-bicyclo[4.2.2]deca-2,4,7-triene)(1-2:5-6-η-cyclooctadiene) by way of formal [η6s + η2s] cycloaddition with high selectivity. Propyne or 1-butyne gave analogous bicylodecatriene complexes.
In Situ Routes to Catalytically Active Ru(0) Species by Reduction of Readily Available, Air-Stable Precursors
作者:Masafumi Hirano、Hideyuki Kobayashi、Takao Ueda、Yuki Hiroi、Ryota Abe、Nobuyuki Komine、Annie L. Colebatch、Martin A. Bennett
DOI:10.1021/acs.organomet.7b00882
日期:2018.4.9
Ru(0) compound. Interestingly, this in situ reduction method of Ru(II) using BuLi can be applied to the cross-dimerization using an ester such as methylacrylate. Alternatively, an air-stable Ru(II) complex having a labile arene ligand such as [RuCl2(η6-anisole)]2 (5c) (5 mol %) with Na2CO3 (40 mol %) in the presence of 1,5-COD (20 mol %) at 100 °C for 6 h in 2-butanol also catalyzes the same cross-dimerization
Synthesis, structures and dynamic NMR spectra of η<sup>6</sup>-hexaethylbenzene complexes of ruthenium(<scp>0</scp>) and ruthenium(<scp>ii</scp>)
作者:Richard Baldwin、Martin A. Bennett、David C. R. Hockless、Paolo Pertici、Alessandra Verrazzani、Gloria Uccello Barretta、Fabio Marchetti、Piero Salvadori
DOI:10.1039/b204875m
日期:——
with HCl gives the binuclear ruthenium(II) complex [RuCl(η6-C6Et6)}2(μ-Cl)2] 2, whose arene ligands adopt a transoid arrangement about the Ru2Cl2 moiety; in turn 2 reacts with methanolic NH4PF6 to give the salt [Ru2(μ-Cl)3(η6-C6Et6)2]PF6, [3]PF6. The ethyl group conformations in crystalline 2 and [3]PF6 are all-distal and 1,3,5-proximal-2,4,6-distal, respectively, whereas only the latter conformation
Convenient Route to Fischer-Type Carbene Ruthenium Complexes: Highly Selective Catalysts for Ring Opening/Cross-Metathesis of Norbornene Derivatives
作者:Hiroyuki Katayama、Masato Nagao、Fumiyuki Ozawa
DOI:10.1021/om020772z
日期:2003.2.1
The Fischer-type ruthenium carbene complexes RuCl2=C(H)ER}(PCy3)(2) (ER = SPh (1a), SC6H4Me-p (1b), SC6H4Cl-p (1c), SC6H4OMe-p (1d), SePh (1e)) have been prepared by the reactions of Ru(p-cymene)(cod), PCy3, and the corresponding dichloromethyl chalcogenides (Cl2CHER) in 47-80% yields. The starting Ru(p-cymene)(cod) is readily synthesized in high yield from [RuCl2(p-cymene)](2). The X-ray structures of 1b and 1e are reported. Complexes la and le serve as highly selective catalysts for ring opening/cross-metathesis of norbornene derivatives with vinyl chalcogenides.