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1,3,5-Trisubstituted pyrazolines were oxidized to the corresponding pyrazoles in high yield with tris(4-bromophenyl)aminium (TBPA~(+*))hexachloroantimonate in chloroform at room temperature.
1,3,5-Trisubstituted pyrazolines were oxidized to the corresponding pyrazoles in high yield with tris (4-bromophenyl) aminium (TBPA ~ (+ *)) hexachloroantimonate in chloroform at room temperature.