Abstract
Treatment of 2-chlorocinchoninic acid with hydrazine gives 2-hydrazinocinchoninic acid and with aroylhydrazines to give 1,2,4-triazolo[4,3-a]quinoline-9-carboxylic acids. These are also prepared by the action of benzoyl chloride or the carboxylic acid on 2-hydrazinocinchoninic acid. With pyruvic acid the latter gives 3-methyl-4-oxo-1,2,4-triazino[4,3-a]quinoline-10-carboxylic acid and with nitrous acid gives 1,2,3,4-tetrazolo[4,3-a]quinoline-9-carboxylic acid.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
Literature Cited
O. A. Yanborisova and M. E. Konshin, Khim. Geterotsikl. Soedin., No. 4, 493 (1991).
Author information
Authors and Affiliations
Additional information
Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 9, pp. 1227–1229, September, 1991.
Rights and permissions
About this article
Cite this article
Yanborisova, O.A., Konshin, M.E. Synthesis of 1,2,4-triazolo[4,3-a]quinoline-9-, 1,2,3,4-tetrazolo[4,3-a]quinoline-9 and 1,2,4-triazino[4,3-a]quinoline-10-carboxylic acids from 2-chloro- and 2-hydrazinocinchoninic acids. Chem Heterocycl Compd 27, 986–988 (1991). https://doi.org/10.1007/BF00484363
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF00484363