Synthesis of Novel N, N'-Diphenyl-1,3-Benzene-bis-Carbohydrazonoyl Bromide and its Utility in Facile Synthesis of New 1,3-Pheneylene Bridged bis-Heterocycles

Reaction of N,N'-diphenyl-1,3-benzene-bis-carbohydrazonoyl bromide 3 with potassium thiocyanate, potassium selenocyanate, active methylene compounds and dipolarophilic alkenes were studied. Structu...