A new strategy for the synthesis of pyrazolo[4,3-e][1,2,4]triazolo[4,3-c]pyrimidines and pyrazolo[4,3-e][1,2,4]triazolo[1,5-c]pyrimidines |
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| Authors: | Ahmad Sami Shawali Hamdi M Hassaneen Nabil Kh Shurrab |
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| Institution: | Department of Chemistry, Faculty of Science, University of Cairo, Giza, Egypt |
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| Abstract: | A series of pyrazolo4,3-e]1,2,4]triazolo4,3-c]pyrimidines were prepared via oxidative cyclization of aldehyde N-(1,3-diphenylpyrazolo3,4-d]pyrimidin-4-yl)hydrazones. Dimroth rearrangement of such a series yielded pyrazolo4,3-e]1,2,4]triazolo1,5-c]pyrimidines. |
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| Keywords: | Hydrazones Nitrilimines Dimroth rearrangement 1H-Pyrazolo[4 3-e]pyrimidine Heterocycles |
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