Condensed pyridine bases synthesis of some benzo[<i>b</i>]furo[2,3-<i>c</i>]-, benzo[<i>b</i>]thieno[2,3-<i>c</i>]-, and benzo[<i>b</i>]selenopheno[2,3-<i>c</i>]quinolines
Abstract
Condensation of benzo[b]furan-3(2H)-one, benzo[b]thiophen-3(2H)-one and benzo[b]selenophen-3(2H)-one with dimedone gives 2-(3-heteryl)dimedones. Acylation of the latter leads to the corresponding tetracyclic pyrylium salts, from which condensed quinolines are obtained. Some condensed quinoline derivatives are obtained by reaction of 1-oxo-1,2,3,4-tetrahydroheterene[2,3-c]quinolines with sodium borohydride, hydrazine, and hydroxylamine.
How to Cite
Tolkunov, S. V.; Khizhan, A. I.; Simonova, S. I.; Semenov, N. S.; Lyashchuk, S. N. Chem. Heterocycl. Compd. 1994, 30, 1. [Khim. Geterotsikl. Soedin. 1994, 1.]
For this article in the English edition, see DOI https://doi.org/10.1007/BF01165692