A new class of 2,6‐pyridine linked bis (oxadiazoles), bis (thiadiazoles), and bis (triazoles) were prepared from the synthetic intermediates pyridine‐2,6‐dicarbohydrazide, E‐aroylethenesulfonylacetic acid and E‐arylsulfonylethenesulfonylacetic acid adopting ultrasonication methodology and tested for their antioxidant activity. Among all the tested compounds 2,6‐(bis (2‐(4‐methylbenzoylethenesulfonylmethyl)‐1,3,4‐oxadiazol‐5‐yl))‐pyridine (7b) was found to be potential antioxidant agent.

A new class of bis(arylsulfonylmethylazolyl)pyridines and bis(arylaminosulfonylmethyl-azolyl)pyridines were synthesized from the synthetic intermediates methyl arylsulfonylacetic acid hydrazide and methyl arylaminosulfonylacetic acid hydrazide adopting a green methodology-ultrasonication. All the synthesized compounds were resulted in higher yield and in shorter reaction times. The spectral parameters such as IR, 1 H NMR, 13 C NMR, mass and microanalyzes were used to determine the structures of all the synthesized compounds and were assayed for antioxidant activity. The bis(arylaminosulfonylmethylazolyl)pyridines showed higher radical scavenging activity than the bis(arylsulfonylmethylazolyl)pyridines. Besides, unsubstituted, and methyl substituted compounds exhibited greater activity. Among all the tested compounds 8b and 11b were identified as potential antioxidants.