ABSTRACT We report the synthesis of sulfonylated 4‐amino‐2‐quinolone derivatives from ortho ‐cyanoarylacrylamides with sodium sulfinates via silver‐catalysed radical addition/cyclization cascade reaction. Various substrates were tolerated well and afforded the desired products in good to excellent yields. We have demonstrated a scale‐up reaction for this methodology.
Kumar et al. (Sun,) studied this question.