Electrochemical reductions of cyanopyridine bases

Details Electrochemical reductions of cyanopyridine bases Electrochemical reductions of cyanopyridine bases

1984-04-05

1984-11-13

Niebling, John F.

Chemistry: electrical and wave energy

Processes and products

204 59R, C25B 300

Patent

active

044824378

ABSTRACT:
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 dioxide 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.

REFERENCES:
Krishman et al., J. Electroanal. Chem. Interfacial Electrochem., 88 (30), 433 (1978).
Volke et al., Coll. Czech. Chem. Commun., 33 (8), 2560 (1968).
Volke et al., Coll. Czech. Chem. Commun. 27, 1597 (1963).

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