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|Type:||Artigo de periódico|
|Title:||Cyclopentadienyl and pentamethylcyclopentadienyl ruthenium complexes as catalysts for the total deoxygenation of 1,2-hexanediol and glycerol|
|Abstract:||The ruthenium aqua complexes [cp*Ru(OH2)(N-N)](OTf) (cp* = eta(5)-pentamethyl-cyclopentadienyl, N-N = 2,2'-bipyridine, phen = 1,10-phenanthroline, OTf(-) = trifluoromethanesulfonate) and the acetonitrile complex [cpRu(CH(3)CN)(bipy)](OTf) (cp = eta(5)-cyclopentadienyl) are water-, acid-, and thermally stable (> 200 degrees C) catalysts for the hydrogenation of aldehydes and ketones in sulfolane solution. In the presence of HOTf as a co-catalyst, they effect the deoxygenation of 1,2-hexanediol to 1-hexanol and hexane. Glycerol is deoxygenated to 1-propanol in up to 18% yield and under more forcing conditions completely deoxygenated to propene. The structure of the acetonitrile pro-catalyst [ cpRu( CH3CN)( bipy)]( OTf) has been determined by X-ray crystallography (space group P (1) over bar (a = 9.3778(10) angstrom; b = 10.7852(10) angstrom; c = 11.1818(13) angstrom; alpha = 101.718(5)degrees; beta = 114.717(4)degrees; g = 102.712(5)degrees; R = 3.95%).|
|Editor:||Royal Soc Chemistry|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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