Electrochemical reduction of .alpha.,.beta.-unsaturated...

Details Electrochemical reduction of .alpha.,.beta.-unsaturated... Electrochemical reduction of .alpha.,.beta.-unsaturated...

C - Chemistry, Metallurgy

25

B

204/43.5

C25B 3/04 (2006.01) C07J 1/00 (2006.01) C07J 7/00 (2006.01) C07J 71/00 (2006.01)

Patent

CA 1052319

ABSTRACT OF THE DISCLOSURE Keto-steroids are produced from .alpha., .beta. - unsaturated keto-steroids by the electrolytic reduction of a double bond in the a, .beta. - position to a keto group. The steroid is reduced by electrolysis in the presence of a nitrogenous solvent, e.g., methylamine or hexamethylphosphoric acid triamide, and of an electrolyte salt selected from quaternary ammonium salts of the formula NRlR2R3R4X, in which R1 R2, R3 and R4 each represents an alkyl, aryl or aralkyl group and X represents a halogen atom, a tetrafluoborate, sulphate, perchlorate or alcoholate group or an aryl-or alkyl-sulphonate group, salts of the formula MX, in which M represents an alkali metal atom and X has the above meaning, and salts of the formula M1X2 in which M1 represents an alkaline earth metal atom and X has the above meaning.

218024

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