Abstract
It is inferred from the
products of bromination under appropriate conditions that the sequences of
reactivity of various positions in indazole species
are: cationic, 5 > 7 � others; molecular, 5 > 3 > 7 � others; anionic,
3 � others. Kinetic studies lead to
bimolecular rate coefficients for attack by Br2 on molecular indazole (aq., 25�C), as follows:
Position 5 3 7
10-3k�bi/dm3
mol-1 s-l 4.2 2.8 0.4
Direct and indirect
syntheses of 7-bromoindazole and other derivatives are described.
Cited by
12 articles.
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