The reaction of 2,3-dichloro-1,4-naphthoquinone with p-nitrobenzhydrazide yeilds the disubstituted product bis-(p-nitrobenzhydrazino)-1,4-napthtquinone.
Purification Methods
Crystallise the hydrazide from EtOH or EtOAc (m 120o). [Beilstein 9 H 375, 9 I 152, 9 II 246, 9 III 1481, 9 IV 1052.]
2-NITROBENZHYDRAZIDE Preparation Products And Raw materials