K. Pitchumani et al., CLAY-CATALYZED FACILE REARRANGEMENT OF DI-AZOAMINOBENZENE TO P-AMINOAZOBENZENE, Indian journal of chemistry. Sect. B: organic chemistry, including medical chemistry, 36(2), 1997, pp. 187-189
Rearrangement of diazoaminobenzene in the presence of acidic cation-ex
changed K10-montmorillonite gives exclusively p-aminoazobenzene at roo
m temperature within three hours.