A convenient method for synthesis of terpyridines a cooperative vinylogous anomeric based oxidation.

The presented study is the first report of the synthesis of terpyridines in the presence of a nanomagnetic catalyst instead of harmful reagents. Herein, FeO@OPO(CH)NH CFCO as a retrievable nanocatalyst with magnetic properties was applied for the multi-component reaction between acetylpyridine derivatives (2 or 3 or 4-isomer), aryl aldehydes and ammonium acetate under conventional heating conditions in the absence of any solvent. The derived terpyridines were obtained with acceptable yields and brief reaction times a cooperative vinylogous anomeric based oxidation route. FeO@OPO(CH)NH CFCO showed a high capability for recovery and reuse in the mentioned reaction.