REACTIONS OF 3-AROYLACRYLATES WITH α-AMINOAZOLES

Authors

  • Н. Н. Колос V. N. Karazin Kharkiv National University
  • Л. Ю. Коваленко V. N. Karazin Kharkiv National University
  • В. A. Боровской Institute for Single Crystals

DOI:

https://doi.org/10.1007/1416

Keywords:

3-amino-1, 2, 4-triazole, 5-aminopyrazole, 6-arylpyridazin-3(2H)-ones, dihydropyrazolo[3, 4-b]pyridines, dihydropyrazolo[1, 5-a]pyrimidines, dihydro[1, 4]triazolo[1, 3-aroylacrylic acids esters, cyclocondensation

Abstract

Dihydro derivatives of pyrazolo[3,4-b]pyridine-, pyrazolo[1,5-a]pyrimidine-, and [1,2,4]triazolo[1,5-a]pyrimidinecarboxylates have been prepared by cyclocondensation of β-aroylacrylates with 5-aminopyrazoles and 3-amino-1,2,4-triazole. Heating dihydro[1,2,4]triazolo[1,5-a]pyrimidine-7-carboxylates with hydrazine hydrate led to recyclization of the pyrimidine ring to form 6-arylpyridazin-3(2H)-ones.

Authors: N. N. Kolos, L. U. Kovalenko, and V. A. Borovskoy.

English translation in Chemistry of Heterocyclic Compounds, 2011, 47 (8), pp 983-988

http://link.springer.com/article/10.1007/s10593-011-0864-3

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Published

2013-12-19

Issue

No. 8 (2011)

Section

Original Papers