ChemInform Abstract: Alkyne Insertion into Ruthenium-Carbon Bonds: Formation and Ring-Closing Reactions of Vinyl Complexes

Autor:	J. R. Crook, Roger J. Mawby, Barbara Chamberlain
Rok vydání:	1989
Předmět:	chemistry.chemical_classification chemistry.chemical_compound Chemistry Yield (chemistry) Aryl Thermal decomposition chemistry.chemical_element Alkyne General Medicine Ring (chemistry) Medicinal chemistry Carbon Ruthenium
Zdroj:	ChemInform. 20
ISSN:	0931-7597
DOI:	10.1002/chin.198925241
Popis:	Compounds [Ru(CO)2(C6H4X-4)CI(PMe2Ph)2][(1a), X = H; (1b), X = Cl; (1c), X = Me; (1d), X = OMe] react with MeO2CCCCO2Me to yield vinyl complexes [Ru(CO)2{C(CO2Me)C(CO2Me)(C6H4X-4)}Cl(PMe2Ph)2](2a)–(2d). The mechanism of formation appears to involve CO substitution by the alkyne, combination of alkyne and aryl ligands, and finally re-entry of CO. Thermal decomposition of (2a)–(2d) yields products [[graphic omitted]H3X)}(PMe2Ph)2](3a)–(3d), complexes (4a)–(4d) whose structure is either [[graphic omitted]O)(C6H4X-4))(PMe2Ph)2] or [[graphic omitted]O)C(CO2Me)(C6H4X-4)}(PMe2Ph)2], alkenes CH(CO2Me)C(CO2Me)(C6H4X-4)(5a)–(5d), and cis-[Ru(CO)2Cl2(PMe2Ph)2]. Complex (3a) is also obtained from [Ru(CO)2(Me)Ph(PMe2Ph)2] and MeO2CCCCO2Me, while the reaction of [Ru(CO)2Me2(PMe2Ph)2] with MeO2CCCCO2Me yields [Ru(CO)2{C(CO2Me)C(CO2Me)Me}Me(PMe2Ph)2](6).
Databáze:	OpenAIRE
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