Metal-catalyzed hydrogenations proposed arene hydrogenation mechanism

Mechanisms of metal-catalyzed oxidations by hydrogen peroxide may be different for alkanes and arenes as well as for different metal complexes. Lor example, for the oxidation of alkanes by the complex [Ru(dmp)2(S)2 (PF6)2 (where S = MeCN or H2O) a mechanism analogous to the oxygen rebound radical mechanism, assumed for cytochrome P450 and its models (see Chapter XI), has been proposed (Scheme X.I) [I3h]. 

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