SYNTHESIS OF 4,4'-DIPYRIDYL FROM PYRIDINE, INVOLVING ELECTROLYSIS

Authors
SMIRNOV YD PAVLICHENKO VF TOMILOV AP
Citation
Yd. Smirnov et al., SYNTHESIS OF 4,4'-DIPYRIDYL FROM PYRIDINE, INVOLVING ELECTROLYSIS, Russian journal of applied chemistry, 67(4), 1994, pp. 614-616
Citations number
4
Categorie Soggetti
Chemistry Applied
Journal title
Russian journal of applied chemistry → ACNP
ISSN journal
10704272
Volume
67
Issue
4
Year of publication
1994
Part
2
Pages
614 - 616
Database
ISI
SICI code
1070-4272(1994)67:4<614:SO4FPI>2.0.ZU;2-Y
Abstract
A method has been developed for preparing 4,4'-dipyridyl, which is bas ed on electrochemical reduction of pyridine to 1,1',4,4'-tetrahydro-4, 4'-dipyridyl, followed by its oxidation with sulfur dioxide in organic phase obtained upon electrolysis. The best yield (60-63%) can be achi eved if oxidation if performed at -25 to -30 degrees C. The 2,4'- and 2,2'-dipyridyls are formed as by-products.