15 сентября, 2015 
Malyar  |
Formazans can undergo a variety of reactions leading to different formazans. These transformations include the reaction of substituents on the aromatic ring such as the hydrolysis of esters and nitriles,57 the reduction of nitro groups to amines,58 as well as esterification of carboxylic acids through their silver salts.57 Replacement of C-nitro formazans38 and C-halo formazans42,4 3,6 0-68 with amino, hydroxy, and mercapto groups as well as other halogens (31a) have been reported. The decarboxylation of C-carboxyl
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formazans has also been reported.57,59 The reaction of formazans with bromine leads to the replacement of 3-hydrogen by bromine as well as ring bromination, 41 to 42 (Eq. 7).51
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