ELECTROOXIDATION OF CATECHOL IN THE PRESENCE OF 1,3-DIMETHYLBARBITURIC ACID AT GRAPHITE ANODE AND NICKEL-HYDROXIDE ELECTRODE

Authors
AZZEM MA ZAHRAN M HAGAGG E
Citation
Ma. Azzem et al., ELECTROOXIDATION OF CATECHOL IN THE PRESENCE OF 1,3-DIMETHYLBARBITURIC ACID AT GRAPHITE ANODE AND NICKEL-HYDROXIDE ELECTRODE, Bulletin of the Chemical Society of Japan, 67(5), 1994, pp. 1390-1393
Citations number
17
Categorie Soggetti
Chemistry
Journal title
Bulletin of the Chemical Society of Japan → ACNP
ISSN journal
00092673
Volume
67
Issue
5
Year of publication
1994
Pages
1390 - 1393
Database
ISI
SICI code
0009-2673(1994)67:5<1390:EOCITP>2.0.ZU;2-E
Abstract
The controlled potential anodic oxidation of catechol in the presence of 1,3-dimethylbarbituric acid was carried out in aqueous solution con taining sodium acetate in an undivided cell at graphite anode and nick el hydroxide electrode. In a sequence of Michael addition of the barbi turate to the anodically formed benzoquinone, dispiropyrimidine deriva tive has been obtained in moderate yield (35-36%). A mechanism has bee n proposed and confirmed on the basis of CPE product, identification t hrough IR, H-1 NMR, C-13 NMR, and MS spectroscopy.