Displacement reactions of 5‐chloro‐4‐phenylazopyrazoles

Abstract

3‐Methyl or 3‐phenyl‐5‐chloro‐1‐phenyl‐4‐phenylazopyrazole with primary amines, sodium polysulfide and sodium azide yielded amines, disulfides and 2,4‐dihydropyrazolo[3,4‐d]‐1,2,3‐triazoles respectively. 4‐Amino‐5‐anilino‐1,3‐diphenylpyrazole was also prepared and characterized.

Cyclization of 4,5‐Diamino Pyrazole Derivatives and Their Antibacterial Activities

“…8 The 4,5-diaminopyrazoles were reported by preparation of different methods. [9][10][11] In order to find more new N and S containing pyrazole heterocycles with biological activity, here we synthesize a series of new compounds by cyclization of 4,5-diamino pyrazole with different reactions.…”