Angewandte Chemie International Edition · 1998 · 90 citations · 0 references
Natural SciencesChemistryCatalysisOrganometallic ChemistryPhysical ChemistryCatalytic MaterialsCatalytic MechanismsRedox CatalysisAldehydesCatalytic Reaction MechanismsHydrogenation CatalysisHydrogenation ReactionsOrganometallic CatalysisPh Dependence Of CatalysisSelectivitySolution Ph Control
The equilibribrium distribution of water-soluble ruthenium hydrides [HRuCl(tppms)3] and [H2Ru(tppms)4] (tppms = (3-sulfonatophenyl)diphenylphosphane) in the reaction with H2 is governed by the pH value. As a consequence, the selectivity in the hydrogenation of cinnamaldehyde for reaction at C=C or C=O can be completely inverted by changing the pH value (see drawing below).