Reactions of 6,6-dimethyl-4,5-dioxo-1-phenyl-4,5,6,7-tetrahydroindazole with 1,3-cyclanediones

Authors

  • А. Я. Страков Riga Technical University, Riga LV-1658
  • Ю. Б. Слиеде Riga Technical University, Riga LV-1658
  • М. В. Петрова Riga Technical University, Riga LV-1658
  • А. Ф. Мишнев Latvian Institute of Organic Synthesis, Riga LV-1006
  • А. А. Kемме Latvian Institute of Organic Synthesis, Riga LV-1006

Abstract

The condensation of 6,6-dimethyl-4,5-dioxo-1-phenyl-4,5,6,7-tetrahydroindazole with the 1,3-cyclanediones 1,3-indanedione and barbituric acid in the presence of piperidine acetate gave 4-(1,3-indanedion-2-ylidene)- and  4-(2,4, 6-trioxo-4, 5-dihydro-5- pyrimidylidene)-5-oxo-1-phenyl-4,5,6,7-tetrahydroindazoles respectively. With hydrazine hydrate the former readily gave 4,4-dimethyl-12-oxo-3-phenyl-4, 5-dihydro-10H-indeno[3, 2-c]pyrazolo[4, 5-f]cinnoline.

How to Cite
Strakov, A. Ya.; Sliede, Yu. B.; Petrova, M. V.; Mishnev, A. F.; Kemme, A. A. Chem. Heterocycl. Compd. 1996, 32, 435. [Khim. Geterotsikl. Soedin. 1996, 501.]

For this article in the English edition, see DOI https://doi.org/10.1007/BF01165906

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Published

1996-04-25

Issue

No. 4 (1996)

Section

Original Papers