Recyclization of 1,3-dimethylbenzo[<i>b</i>]furo[2,3-<i>c</i>]- and 1,3-dimethylbenzo[<i>b</i>]thieno[2,3-<i>c</i>]pyrylium when treated with secondary amines. Synthesis of 3-dialkylamino derivatives of dibenzofuran and dibenzothiophene

Abstract

We have established that 2,4-dimethylbenzo[b]furo[3,2-c]pyrylium and 2,4-dimethylbenzo[b]thieno[3,2-c]pyrylium salts can undergo recyclization to 3-dialkylamino derivatives of dibenzofuran and dibenzothiophene when treated with secondary amines. We compare the physicochemical and spectral characteristics of the compounds obtained with the recyclization products of 1,3-dimethylbenzo[b]furo[2,3-c]- and 1,3-dimethylbenzo[b]thieno[2,3-c]pyrylium salts.

How to Cite
Tolkunov, S. V.; Dulenko, V. I. Chem. Heterocycl. Compd. 1998, 34, 159. [Khim. Geterotsikl. Soedin. 1998, 34, 182.]

For this article in the English edition, see DOI https://doi.org/10.1007/BF02315176