- Synthesis of (3-tert-Butylpyrazolo[5,1-c][1,2,4]triazin-4-yl)phosphine Oxides
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Abstract: Aromatic 7-R1-8-R2-3-tert-butylpyrazolo[5,1-c][1,2,4]triazines (R1 = H, Br; R2 = H, Me, Br) reacted with lithium diphenyl- and methyl(phenyl)phosphides in THF at lower temperature to give nucleophilic addition products to the C4 atom. Further oxidation with atmospheric oxygen or N-bromosuccinimide afforded previously unknown (3-tert-butylpyrazolo[5,1-c][1,2,4]triazin-4-yl)phosphine oxides and 2,2-dibromoacetamide as a by-product. The structure of the isolated compounds was confirmed by IR, 1H, 13C, and 31P NMR, and mass spectra and X-ray analysis.
- Ivanov,Mironovich,Kolotyrkina,Minyaev
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- Un equivalent synthetique de la triformyl s-triazine
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The tris-dimorpholinomethyl-s-triazine 2 behaves as a synthetic equivalent of the still unknown triformyl-s-triazine 1.Thus from 2 we were able to prepare some characteristic derivatives 5 of the trialdehyde 1, triphenylhydrazones, trialdoxime, trisemicar
- Sumera, F.,Rouzic, A. Le,Raphalen, D.,Kerfanto, M.
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p. 793 - 795
(2007/10/02)
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