Electrochemical dimerizations of pyridinium salts

Details Electrochemical dimerizations of pyridinium salts Electrochemical dimerizations of pyridinium salts

1985-11-13

1987-06-02

Andrews, R. L.

Chemistry: electrical and wave energy

Processes and products

204 72, 204 73R, 204 74, C25G 300

Patent

active

046701117

ABSTRACT:
An improved electrochemical dimerization of a N-substituted pyridinium salt to its corresponding N,N'-disubstituted 4,4'-tetrahydrobipyridine in a flow cell at a high-surface-area cathode, employing an ion-exchange membrane divider and an alkaline catholyte solution. Isolation and recovery of the resultant product are reported in significant yields are reported without the use of an extracting solvent or corrosion or other additive either in the catholyte solution or in any subsequent operation.

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Bruno Emmert, "Const. of the Dialkyltetrahydrodipyridyls Discovered by A. W. Hofmann", Ber. 52B, 1351-3 (1919).
Bruno Emmert, "A Radical w. Quadrivalent N."Ber. 53B, 370-7 (1920).
Bruno Emmert, "Electrolysis of Quaternary Pyridinium and Quinolinium Salts", Ber. 42, 1997-9 (1909).
"Organic Electrosynthesis", by R. Jansson, Chem. & Eng. News, 11/19/84.

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