4,5-DIHYDROPYRAZOLO[3,4-<i>f</i>]QUINAZOLINES

Authors

  • Н. Н. Тонких Riga Technical University, Riga LV-1048
  • К. В. Рыжанова Riga Technical University, Riga LV-1048
  • М. В. Петрова Riga Technical University, Riga LV-1048
  • А. Я. Страков Riga Technical University, Riga LV-1048

Keywords:

2-methyl-7-phenyl-4,5-dihydropyrazolo[3,4-f]quinazolines, 2-phenyl- and 6-dimethylaminomethylene-2-(4-pyridyl)-5-oxo-5,6,7,8-tetrahydroquinazolines, 1-aryl-7-phenyl(4-pyridyl)-4,5-dihydro-pyrazolo[3,4-f]quinazolines, 7-phenyl(4-pyridyl)-1(2H)-4,5-dihydropyrazolo[3,4-f]quinazolines, methylation

Abstract

By reaction of 6-dimethylamino-5-oxo-2-phenyl-5,6,7,8-tetrahydroquinazoline with hydrazine, phenylhydrazine, 4-bromo-, 4-chlorophenylhydrazines, and also reaction of 6-dimethylaminomethylene-5-oxo-2-(4-pyridyl)-5,6,7,8-tetrahydroquinazoline with hydrazine, 4-methoxy- and 2-carboxyphenyl-hydrazines, we have obtained the corresponding 7-phenyl(4-pyridyl)-substituted 1H(2H)-or 1-aryl-4,5-dihydropyrazolo[3,4-f]quinazolines. Methylation of 7-phenyl-4,5-dihydro-1(2H)-pyrazolo[3,4-f]-quinazoline by methyl iodide led to its 2-methyl derivative.

How to Cite
Tonkikh, N. N.; Ryzhanova, K. V.; Petrova, M. V.; Strakovs, A. Chem. Heterocycl. Compd. 2003, 39, 651. [Khim. Geterotsikl. Soedin. 2003, 751.]

For this article in the English edition, see DOI https://doi.org/10.1023/A:1025158518680

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Published

2003-05-25

Issue

No. 5 (2003)

Section

Original Papers