Ae. Frumkin et al., Synthesis of amino-substituted 1,3-bis(tert-butyl-NNO-azoxy)benzenes 1. 4-amino and 4,6-diamino derivatives, RUSS CHEM B, 48(7), 1999, pp. 1295-1298
Oxidation of 4,6-dichloro-1,3-phenylenediamine with Care's acid yields the
corresponding dinitrosobenzene, which reacts with N,N-dibromo-tert-butylami
ne to give 1,5-bis(tert-butyl-NNO-azoxy)-2,4-dichlorobenzene. Treatment of
the latter with ammonia yields 4-amino- and 4,6-diamino-1,3-bis(tert-butyl-
NNO-azoxy)benzenes.