cis-[RuH2(dcpe)2] and cis-[OsH2(dcpe)2] (dcpe = Cy2PCH2CH2PCy2) behave as catalyst precursors for the hydrogenation of C = C bonds in a number of organic substrates. The ruthenium species is the more active one for the reduction of enones to saturated ketones. In contrast, the hydrogenation of unactivated olefins is faster in the presence of the osmium catalyst. Experimental evidence of the formation of the catalytically active species via dissociation of one diphosphine is obtained.
Effect of Bulky Ligands on the Hydrogenation of Olefins Catalyzed by cis-[MH2(dcpe)2] (M = Ru, Os; dcpe = 1,2-Bis(dicyclohexylphosphino)ethane)
DEL ZOTTO, Alessandro
1992-01-01
Abstract
cis-[RuH2(dcpe)2] and cis-[OsH2(dcpe)2] (dcpe = Cy2PCH2CH2PCy2) behave as catalyst precursors for the hydrogenation of C = C bonds in a number of organic substrates. The ruthenium species is the more active one for the reduction of enones to saturated ketones. In contrast, the hydrogenation of unactivated olefins is faster in the presence of the osmium catalyst. Experimental evidence of the formation of the catalytically active species via dissociation of one diphosphine is obtained.File in questo prodotto:
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