Oxidation process using metal nitro complex

Details Oxidation process using metal nitro complex Oxidation process using metal nitro complex

C - Chemistry, Metallurgy

07

C

260/582, 260/752

C07C 15/04 (2006.01) B01J 31/18 (2006.01) C07C 5/50 (2006.01) C07C 45/29 (2006.01) C07C 45/38 (2006.01)

Patent

CA 1105057

ABSTRACT OF THE DISCLOSURE A new liquid phase oxidation process in which a metal nitro complex transfers an oxygen atom from the nitro ligand to a substrate; especially such process conducted cyclically or catalytically using molecular oxygen as the oxygen source. Metal nitrosyl complex is formed as a coproduct together with an oxida- tion product of the substrate. In a catalytic process, molecular oxygen maintains a concentration of nitro ligand in the reaction mixture. In a cyclic process, nitrosyl ligand of the metal nitrosyl coproduct is reoxidized by molecular oxygen in presence of a monodentate base such as pyridine to nitro ligand; and the nitro complex, thus regenerated, can be used again to oxidize the substrate. In particular the metal is a Group VIII metal, espe- cially cobalt and the nitro complex is pyridine cobalt nitro saloph. To accelerate oxidation of the substrate at given temper- ature, a cocatalyst is included in the reaction mixture, e.g. an organic complex of a transition metal such as Mo(VI), Pd(II), or compound of a trivalent metallic element with an element of Group VII, such as the compound BF3.

331573

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