2003
DOI: 10.1002/chem.200304740
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Synthesis, Molecular Structure, and CC Coupling Reactions of Carbeneruthenium(II) Complexes with C5H5Ru(CRR′) and C5Me5Ru(CRR′) as Molecular Units

Abstract: The ethene derivatives [(eta(5)-C(5)R(5))RuX(C(2)H(4))(PPh(3))] with R=H and Me, which have been prepared from the eta(3)-allylic compounds [(eta(5)-C(5)R(5))Ru(eta(3)-2-MeC(3)H(4))(PPh(3))] (1, 2) and acids HX under an ethene atmosphere, are excellent starting materials for the synthesis of a series of new halfsandwich-type ruthenium(II) complexes. The olefinic ligand is replaced not only by CO and pyridine, but also by internal and terminal alkynes to give (for X=Cl) alkyne, vinylidene, and allene compounds … Show more

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Cited by 45 publications
(47 citation statements)
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“…[8] A likely candidate for the active Ru II catalyst is the 16e -complex [Cp*RuCl(PPh 3 )], but attempts to prepare this complex on a preparative scale have failed. [9] However, it was possible to stabilize a structurally related complex by using a sterically very demanding cyclopentadienyl ligand. [10] In the case of Os, the synthesis and the structure of the 16e -complex [Cp*OsBr(PiPr 3 )] has been reported, [11] but, to the best of our knowledge, an analogous PPh 3 complex is not known.…”
Section: Resultsmentioning
confidence: 99%
“…[8] A likely candidate for the active Ru II catalyst is the 16e -complex [Cp*RuCl(PPh 3 )], but attempts to prepare this complex on a preparative scale have failed. [9] However, it was possible to stabilize a structurally related complex by using a sterically very demanding cyclopentadienyl ligand. [10] In the case of Os, the synthesis and the structure of the 16e -complex [Cp*OsBr(PiPr 3 )] has been reported, [11] but, to the best of our knowledge, an analogous PPh 3 complex is not known.…”
Section: Resultsmentioning
confidence: 99%
“…It should be noted that previous attempts to make complex 3 on a preparative scale have failed. [12] However, a structurally related complex with a sterically demanding cyclopentadienyl ligand has recently been characterized crystallographically. [13] For reactions with the catalyst precursor 2, the active intermediate 3 can be accessed by loss of one phosphine ligand.…”
Section: Wwwchemeurjorgmentioning
confidence: 99%
“…The methylallyl ligand is characterized by a typical h 3 coordination mode with CÀC and Ru À C bond lengths similar to those of reported ruthenium allyl complexes. [32][33][34][35][36][37] In analogy to the addition of H + , we treated of 1 with one molar equivalent of the Ga + transfer reagent [Ga 2 Cp*]-…”
Section: The Addition Of Hmentioning
confidence: 99%