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NaOH mediated reaction of nitrobenzenes in EtOH was performed at 80 C temperature affording azobenzenes in excellent yield. This methodology presents an easy synthesis of a wide variety of azo compounds from readily available nitrobenzene derivatives.a II-aniline, III-azoxybenzene, IV-azobenzene.

Superparamagnetic NiFe 2 O 4 catalyst immobilized palladium(II) has been synthesized using a microemulsion method and functionalized with Schiff-base group to form an immobilized bidentate ligand. The catalyst was characterized by multiple analytical techniques. The immobilized palladium complex was used in EtOH/ water under aerobic conditions. The catalyst is applicable for various substrates and easily separable. The as-prepared catalyst was reused up to five runs with slight decrease in catalytic activity.