Rhodia Chimie

Societe Nationale Des Poudres Et Explosifs

Yolande Rollin

Jacques Perichon

Corinne Gosmini

Laurence Garnier

A liquid conductive composition for electrolytic use, comprises a cobalt salt, a zinc salt, a polar aprotic solvent of said salts and a cobalt ligand. The liquid composition is used in a process for the preparation of an organozinc compound by electrolytic synthesis. The process comprises the step of subjecting to an electrolysis on an inert cathode the liquid composition comprising a cobalt salt, a zinc salt, a solvent, a cobalt ligand, and an organic halide, and recovering the organozinc obtained by the electrolysis.

Method for preparing organo-zinc derivatives by electrochemical process associated with a cobalt salt catalysis

The present invention relates to a process for the electrochemical synthesis of alpha-saturated ketones by electrochemical reduction, in an organic solvent medium, of alpha-saturated organic halides in the presence of CO.sub.2 and of a catalyst based on nickel complexed with a bidentate organic ligand containing two nitrogen atoms, such as 2,2'-bipyridine and, optionally, with an ethylenic coligand. The anode, made of a metal chosen from the group consisting of the reducing metals and their alloys, is consumed during the electrochemical reaction whose site it is. It is preferably made of magnesium. This process is simple to use and allows a single-compartment cell to be employed. Alpha-saturated ketones are compounds commonly employed in the chemical industry, particularly as solvents or synthesis intermediates.

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Boissy-Saint-Leger, France

Yolande Rollin