RECYCLIZATION ON CONDENSATION OF ALKYLHYDRAZONES OF 2-PHENACYL-1H-BENZIMIDAZOLE WITH ACYLATING AGENTS

Authors

  • И. Б. Дзвинчук Institute of Organic Chemistry, National Academy of Sciences of Ukraine, Kiev 02094

DOI:

https://doi.org/10.1007/8345

Keywords:

benzimidazoles, hydrazones, pyrazoles, acylation, condensation, recyclization, selectivity

Abstract

Cyanoethyl-, ethyl-, and methylhydrazones of 2-phenacyl-1H-benzimidazole undergo recyclization on condensation with aroyl chlorides or dimethylformamide with the formation of 5-(o-aroyl-aminoanilino)pyrazoles or 1-(5-pyrazolyl)-1H-benzimidazoles. The reaction with aroyl chlorides occurs selectively only with the corresponding cyanoethylhydrazone.

How to Cite
Dzvinchuk, I. B. Chem. Heterocycl. Compd. 2005, 41, 323. [Khim. Geterotsikl. Soedin. 2005, 372.]

For this article in the English edition, see DOI 10.1007/s10593-005-0151-2

 

Downloads

Published

2023-11-27

Issue

No. 3 (2005)

Section

Original Papers