Activation of Reducing Agents. Sodium Hydride Containing Complex Reducing Agents. 12. New Convenient, Highly Active, and Selective Nickel Hydrogenation Catalysts

Article abstract of DOI:10.1021/jo01298a036

Complex reducing agents (CRA) such as NaH-RONa-Ni(OAc)2 are described as sources of new, atmospheric-pressure, heterogeneous hydrogenation catalysts.These catalysts (referred to as Nic) are cheap, easily and reproducibly prepared, not pyrophoric, and stable on long storage.They reproducibly allow highly selective semihydrogenation of alkynes to cis alkenes.Moreover, they promote the hydrogenation of alkenes.Their selectivity was exemplified by selective hydrogenations of dienes or alkene mixtures.Finally, Nic also exhibit good activity for carbonyl group hydrogenation at atmospheric pressure.