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- W2145403588 abstract "Treatment of 2-cyano-N-(2-pyridyl)acetamide (1) with hydrazonoyl chlorides 2a-e afforded aminopyrazoles 4a-e which on treatment with sodium nitrite in acetic acid furnished the pyrazolo[3,4-d]-1,2,3-triazin-4-one derivatives 8a-e. Reaction of aminopyrazoles 4c-e with triethylorthoformate in glacial acetic acid afforded pyrazolo[3,4-d]pyrimidin-4-one derivatives 10a-c. Compound 1 reacted with DMF-DMA in refluxing xylene affording a mixture of 3-(N,Ndimethylamino)propenenitrile 11 and N,1-di(pyridin-2-yl)pyridine-3-carboxamide 15 derivatives. When compound 11 was treated with hydrazine, phenylhydrazine or with 5-amino3-phenyl-1H-pyrazole 16 in refluxing ethanol, the novel aminopyrazoles 13a,b and pyrazolo[1,5a]pyrimidine 18 derivatives were obtained." @default.
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- W2145403588 date "2008-09-21" @default.
- W2145403588 modified "2023-10-13" @default.
- W2145403588 title "Facile route to novel 2-pyridone, pyrazolo[3,4-d]-1,2,3-triazine, and pyrazolo[3,4-d]- and [1,5-a]-pyrimidine derivatives" @default.
- W2145403588 doi "https://doi.org/10.3998/ark.5550190.0009.f16" @default.
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