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The Chemical Reactions of Superoxide with Halopyrimidines
박군하,이창옥,Park Koon Ha,Lee Chang-Ok Korean Chemical Society 1989 Bulletin of the Korean Chemical Society Vol.10 No.1
Halopyrimidines such as 2-chloro-, 5-bromo, and 4,6-dichloro-5-nitropyrimidine undergo substitution reactions with superoxide anion radical (superoxide) to give the corresponding hydroxypyrimidines under suitable conditions. Parallel experiments employing hydroxide instead of superoxide strongly indicate that the reactivity of superoxide is comparable to that of the hydroxide in the reaction with halopyrimidines. The results seem to provide a piece of information in favor of the nucleophilic substitution rather than electron-transfer mechanism in the title reaction.
박군하,전건,오시화,Park, Gun Ha,Jeon, Geon,O, Si Hwa Korean Chemical Society 2000 Bulletin of the Korean Chemical Society Vol.21 No.4
Arenealdehyde 2-benzothiazolylhydrazone in thianthrene cation radicalafforded triazolo[3,4-b]benzothiazoles and 1,2,4-triazoles as major and minor product, respectively. On the contrary the similar reaction in tris(2,4-dibromophenyl)aminium hexachloroantimonate gave 1,2,4-triazoles and triazolo[3,4-b]benzothiazoles as ma-jor and minor product, respectively.