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

摘要

Reaction of N,N'-diphenyl-1,3-benzene-bis-carbohydrazonoyl bromide3with potassium thiocyanate, potassium selenocyanate, active methylene compounds and dipolarophilic alkenes were studied. Structures of the products were established on analytical and spectral data as well as chemical transformations. The results indicated that compound3is useful precursor for synthesis of a wide variety of 1,3-phenylene-bis-heterocycles.