Heterocyclic analogs of xanthone

Research paper by A. S. Vitvitskaya, M. P. Noskova, I. Ya. Kvitko, L. S. Éfros

Indexed on: 01 Jul '73Published on: 01 Jul '73Published in: Chemistry of Heterocyclic Compounds


A comparative investigation of the acid-base properties, the polarographic behavior, and the spectral characteristics of oxochromeno- and oxothiochromenopyrazoles, oxodipyrazolopyrans, and their electronic analogs xanthone and thioxanthone, has been performed. The difference in properties is due to the electron-accepting nature of the condensed pyrazole ring.