REGIOSPECIFIC DEMETHYLATION-SULFONATION OF 2',3'-DIMETHOXYFLAVONES

Authors
HABSAOUI A CAMI JLF WALLET JC GAYDOU EM
Citation
A. Habsaoui et al., REGIOSPECIFIC DEMETHYLATION-SULFONATION OF 2',3'-DIMETHOXYFLAVONES, Heterocycles, 48(9), 1998, pp. 1759-1767
Citations number
31
Categorie Soggetti
Chemistry Inorganic & Nuclear
Journal title
Heterocycles → ACNP
ISSN journal
03855414
Volume
48
Issue
9
Year of publication
1998
Pages
1759 - 1767
Database
ISI
SICI code
0385-5414(1998)48:9<1759:RDO2>2.0.ZU;2-S
Abstract
By a careful control of the temperature at 85 degrees C, the selective demethylation of 2',3'-dimethoxyflavones with sulfuric acid occurs at the 2'-hindered methoxy group followed by para sulfonation. At higher temperature, demethylation is complete.