Electrochemical reductions of cyanopyridine bases

Details Electrochemical reductions of cyanopyridine bases Electrochemical reductions of cyanopyridine bases

C - Chemistry, Metallurgy

25

B

204/53

C25B 3/04 (2006.01) C07D 213/38 (2006.01)

Patent

CA 1261298

Abstract of the Disclosure Improved electrochemical reductions of cyanopyridine bases in which the reduction is performed by electrolysis in an ion-exchange membrane-divided flow cell at a lead or alloyed lead cathode and in an aqueous or partly aqueous medium comprising sulfuric acid in at least a 1:1 mole ratio with the cyanopyridine base. In the case of 2- and 3- isomers, an iron salt is also added to the catholyte as a catalyst. In the case of the 4- isomer, an efficient, semi-continuous batch process is reported. With all bases, significant advantages of a commercial and industrial nature are reported over prior art static, beaker cell technology.

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