
%0 Journal Article
%A Boulton, BE 
%A Coller, BAW 
%T Kinetics, stoichiometry and mechanism in the bromination of aromatic heterocycles. III. Aqueous bromination of indazole
%J Australian Journal of Chemistry
%D 1974/11/01
%V 27
%N 11
%P 2343-2347
%K 
%R https://doi.org/10.1071/CH9742343
%U https://www.publish.csiro.au/paper/CH9742343 
%X 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., 25ºC), as follows:     Position        5     3     7   10-3kºbi/dm3 mol-1 s-l   4.2     2.8     0.4   Direct and indirect syntheses of 7-bromoindazole and other derivatives are described. 
