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Experimental study demonstrates high-yield green synthesis and radical-trapping antioxidant activity of novel pyrazoloazepines, highlighting eco-friendly routes to bioactive compounds.
In this research we have synthesized new derivatives of pyrazoloazepine in high yields using multicomponent reaction of aniline, oxalyl chloride, iminoalkyl bromides, activated acetylenic compounds, and hydrazonoyl chlorides in ionic liquid at room temperature. Because of having NH group in the synthesized compounds, we investigate antioxidant property of some synthesized pyrazoloazepine by diphenyl-picrylhydrazine (DPPH) radical trapping and power of ferric reduction experiment. Short time of reaction, high yields of product, easy separation of catalyst and products are some advantages of this procedure.
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IAU (2026) studied this question.
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