Yl. Wang et al., An efficient and convenient procedure for preparation of diaryl carbazone from aryl substituted carbazide, SYN COMMUN, 29(1), 1999, pp. 53-56
A new facile method for the synthesis of diaryl carbazone (ArN=NCONHNHAr) f
rom aryl substituted carbazide is described. Eight of the compounds were pr
eparated by oxidation of aryl substituted carbazide with ferric chloride in
acid medium at room tempreture in good yield.