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- W2083348629 abstract "A regioselective synthesis of 2-aminotriazinones 6a-d is reported, by reaction of 3-methylthio-1,2,4-triazinones 5a-d with O-(2,4-dinitrophenyl)hydroxylamine (2) as an amino-transfer agent. A spectroscopic study and an unequivocal synthesis of 2-amino-4-methyl-6-phenyl-1,2,4-triazinedione (11a) has shown the site of amination to be N2 of the 1,2,4-triazinone ring. Subsequent reaction of 2-amino-1,2,4-triazinones 6a-b with amines, followed by ring closure with aliphatic acids provided [1,2,4]triazolo[2,3-b][1,2,4]triazine-7(1H)ones 13a-e. Conversion of [1,2,4]triazolo[2,3-b][1,2,4]triazinone 13c to unsubstituted [1,2,4]triazolo[2,3-6][1,2,4]triazine (15) was attained." @default.
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- W2083348629 date "1983-11-01" @default.
- W2083348629 modified "2023-09-26" @default.
- W2083348629 title "1,2,4-triazines.7. Regioselective n2-amination of 3-methylthio-1,2,4-triazin-5(2H)-ones.A novel synthesis of [1,2,4]triazolo[2,3-b][1,2,4]triazinones and -triazine" @default.
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- W2083348629 doi "https://doi.org/10.1002/jhet.5570200646" @default.
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