Abstract
In this paper, a high‐yielding, atom‐efficient, and green protocol for the synthesis of novel pyrazolo‐fused benzophenazines utilizing a multicomponent condensation reaction between 2‐hydroxynaphthalene‐1,4 ‐dione, o‐phenylenediamine, aromatic aldehydes, and 4‐ methylbenzenesulfonohydrazide in the presence of phosphotungstic acid (H3PW12O40) under microwave irradiation (MWI) in EtOH is reported. The novel series of 1H‐benzo[a]pyrazolo[3,4‐c]phenazine derivatives may be useful for biological screening tests. More details will be discussed by Dr. Razieh Mohebat and her co‐workers on page 1259‐1265 in this issue. image
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