
TY  - JOUR
A1  - Chang, K 
A1  - Grimmett, MR 
A1  - Ward, DD 
A1  - Weavers, RT 
T1  - The Nitration of Brominated Pyrazoles in Aqueous Sulfuric Acid
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1979
VL  - 32
IS  - 8
SP  - 1727
EP  - 1734
KW  - 
UR  - https://doi.org/10.1071/CH9791727 
N2  - Nitration in 80% sulfuric acid of 4-bromopyrazoles gives rise to considerable nitrodebromination. Compounds with no alkyl or aryl substituent on nitrogen give only the 4-nitro products (except 4-bromo-3-phenylpyrazole which gives the p-nitrophenyl compound). N-Alkyl-4-bromopyrazoles give products of nitrodebromination as well as those arising from nitration in the 3- and/or 5-positions. N-Aryl-4-bromopyrazoles can also undergo nitration of the aryl substituent. 
ER  -

