
TY  - JOUR
A1  - Boulton, BE 
A1  - Coller, BAW 
T1  - Kinetics, stoichiometry and mechanism in the bromination of aromatic heterocycles. III. Aqueous bromination of indazole
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1974
VL  - 27
IS  - 11
SP  - 2343
EP  - 2347
KW  - 
UR  - https://doi.org/10.1071/CH9742343 
N2  - 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. 
ER  -

