Site-selectivite Synthesis and Tautomerism of Arylazo Derivatives of Pyrazolo[3,4-d]pyrimido-[1,6-b][1,2,4]triazine
Vol. 65 No. 536 (2008), Articles
Vol. 65 No. 536 (2008)

Site-selectivite Synthesis and Tautomerism of Arylazo Derivatives of Pyrazolo[3,4-d]pyrimido-[1,6-b][1,2,4]triazine

Articles
Ahmad Sami Shawali
Department of Chemistry Faculty of Science University of Cairo Giza
Sherif M. Sherif
Department of Chemistry Faculty of Science University of Cairo Giza
Thoraya A. Farghaly
Department of Chemistry Faculty of Science University of Cairo Giza
Manal A. A. Darwish
Department of Chemistry Faculty of Science University of Cairo Giza
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How to Cite

Sami Shawali, Ahmad et al. “Site-selectivite Synthesis and Tautomerism of Arylazo Derivatives of Pyrazolo[3,4-d]pyrimido-[1,6-b][1,2,4]triazine”. Afinidad. Journal of Chemical Engineering Theoretical and Applied Chemistry, vol.VOL 65, no. 536, https://raco.cat/index.php/afinidad/article/view/282237.


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Abstract

A simple synthetic strategy is described for synthesis of the hitherto unreported 5-arylazo-1,3-diphenyl-6-substituted-1H-pyrazolo[3,4-d]pyrimido[1,6-b][1,2,4]triazines 5a-n. The spectral data indicated that the studied compounds exist predominantly in the hydrazone tautomeric form 5A. The site-selectivity and mechanism of the studied reactions are discussed.

Keywords

  • Hydrazonoyl halides
  • azo-hydrazone tautomerism
  • heterocycles.
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