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Synthesis and X-ray Structural Characterization of Ru(PPh3)3(CO)(C2H4) and RuH(o-C6H4C(O)CH3)(PPh3)2L (L = PPh3, CO, DMSO): Ruthenium Complexes with Relevance to the Murai Reaction


Reference:

Jazzar, R. F. R., Mahon, M. F. and Whittlesey, M. K., 2001. Synthesis and X-ray Structural Characterization of Ru(PPh3)3(CO)(C2H4) and RuH(o-C6H4C(O)CH3)(PPh3)2L (L = PPh3, CO, DMSO): Ruthenium Complexes with Relevance to the Murai Reaction. Organometallics, 20 (17), pp. 3745-3751.

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Abstract

The Ru complexes Ru(PPh3)3(CO)(C2H4) (1) and RuH(o-C6H4C(O)CH3)(L)(PPh3)2 (2, L = PPh3; 3, L = CO; 4, L = DMSO) were prepd. to assess their activity for catalyzing the insertion of alkenes into the ortho C-H bond of arom. ketones (Murai reaction). Treatment of RuH2(CO)(PPh3)3 with ethene in refluxing toluene afforded 1, which was characterized by multinuclear NMR spectroscopy and x-ray crystallog. Excess acetophenone reacted with Ru(H2)H2(PPh3)3 to give RuH(o-C6H4C(O)CH3)(PPh3)3 (2), which loses PPh3 upon addn. of CO or DMSO to give RuH(o-C6H4C(O)CH3)(CO)(PPh3)2 (3) and RuH(o-C6H4C(O)CH3)(DMSO)(PPh3)2 (4), resp. The x-ray crystal structures of both of these compds. were detd. The activity for catalyzing the reaction of 2'-methylacetophenone with triethoxyvinylsilane follows the order RuH2(CO)(PPh3)3 > 2 > 1 > 4. Complex 3, along with both RuH2(CO)(AsPh3)3 and RuH2(CO)(dppp)(PPh3) (dppp = Ph2P(CH2)3PPh2), show essentially zero catalytic activity.

Details

Item Type Articles
CreatorsJazzar, R. F. R., Mahon, M. F. and Whittlesey, M. K.
Uncontrolled Keywordsmurai coupling triethoxyvinylsilane methylacetophenone ruthenium catalyzed, mol structure ruthenium ortho metalated acetophenone triphenylphosphine hydride complex, ruthenium catalyzed coupling of triethoxyvinylsilane with methylacetophenone), molecular structure (of ortho-metalated acetophenone triphenylphosphine ruthenium hydride complexes), crystal structure ruthenium ortho metalated acetophenone triphenylphosphine hydride complex, crystal structure, coupling reaction catalysts (ruthenium-catalyzed murai-type coupling of methylacetophenone with triethoxyvinylsilane), coupling reaction (murai, ruthenium hydride ortho metalated acetophenone triphenylphosphine complex prepn catalyst
DepartmentsFaculty of Science > Chemistry
RefereedYes
StatusPublished
ID Code5208

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