Study of Friedel-Crafts acetylation of indolobenzo[<i>b</i>]furans, indolobenzo[<i>b</i>]thiophenes, pyrrolocarbazole, and pyrrolophenothazine dioxide by ¹H NMR spectroscopy

Abstract

The reactivity towards Friedel-Crafts acetylation of the new heterocyclic systems indolo[5,6-d]- and indolo[5,4-d]benzo[b]furans, 3H- pyrrolo[2,3-c]carbazole, indolo[7,6-d]-, indolo[4,5-d]- and indolo[5,4-d]benzo[b]thiophenes and 3H-pyrrolo[2,3-c]phenothiazine-11,11-dioxide have been studied. Under acid conditions these heterocycles behave like indole to give dimerization products, but anomalies were observed in a number of cases. These principles have been established by detailed analysis of the ¹H NMR spectra of the reaction products.

How to Cite
Kurkovskaya, L. N., Khoshtariya, T. E. Chem. Heterocycl. Compd. 1995, 31, 938. [Khim. Geterotsikl. Soedin. 1995, 1078.]

For this article in the English edition, see DOI https://doi.org/10.1007/BF01170321