Homogeneous Hydrogenations of Organic Compounds with the Cobalt Complex Ions. I. Homogeneous Hydrogenation of Unsaturated Compounds in Divalent and Trivalent Cobalt

Use of Transition Metal Complexes as Selective Hydrogenation Catalysts

“…Although cyano groups are not reduced under these mild conditions, cyano (Levering, 1964) as well as imino (Bird, 1967c;Horiie and Murahashi, 1960;Horiie, 1959, 1960;Murakami et al, 1963a;Nakamura and Hagihara, 1958) groups can be reduced under hydroformylation conditions. Thus substituted benzylideneanilines yield benzylamines (Equation 32) on reduction (Murahashi and Horiie, 1959Murakami et al, 1963a), and nitriles give amines (Levering, 1964). Similarly nitro groups can be reduced, nitrobenzene yielding diphenylurea (Murahashi and Horiie, 1960).…”