SYNTHESIS OF SUBSTITUTED 1<i>H</i>-INDAZOLES BY PYRAZOLE ANNELATION TO AN ARENE

Authors

  • А. К. Гаркушенко F. M. Dostoevskii Omsk State University
  • О. П. Сорокина F. M. Dostoevskii Omsk State University
  • Г. А. Крючкова F. M. Dostoevskii Omsk State University
  • А. А. Змеев F. M. Dostoevskii Omsk State University
  • М. А. Макарова F. M. Dostoevskii Omsk State University
  • М. А. Воронцова F. M. Dostoevskii Omsk State University
  • Г. П. Сагитуллина F. M. Dostoevskii Omsk State University

DOI:

https://doi.org/10.1007/407

Keywords:

5-aroyl-3-aryl-1, 6-dimethyl-1H-indazoles, 5-amino-1, 3, 6-trimethyl-1H-indazole, 5-bis-(cyclopropylcarbonyl)-2, 6-dimethyl-1, 4-dihydropyridine, 5-bis(cyclopropylcarbonyl)-2, 6-dimethyl-pyridine, substituted ortho-aroyl-N-methylanilines, substituted N-meth

Abstract

Substituted 1H-indazoles have been synthesized by reductive intramolecular heterocyclization of 2,4-di-aroyl-N‑nitrosomethylanilines and 2,4-diacetyl-N-nitrosomethylaniline. The N-nitrosoanilines were obtained by nitrosation of N-methyl-2,4-diaroyl- and 2,4-diacetylanilines, the products of quaternary 3,5-diaroyl- and 3,5-diacetylpyridinium salt recyclization.

Authors: A. K. Garkushenko, O. P. Sorokina, G. A. Kryuchkova, A. A. Zmeev, M. A. Makarova, M. A. Vorontsova, and G. P. Sagitullina

English Translation in Chemistry of Heterocyclic Compounds, 2013, 49 (2), pp 273-280

http://link.springer.com/article/10.1007/s10593-013-1244-y

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Published

2013-03-18

Issue

No. 2 (2013)

Section

Original Papers