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A convenient and metal‐free DMAP‐catalyzed domino reaction of isatins, arylamines and hydroximoyl chlorides has been developed to achieve 1,3‐dipolar cycloaddition of imines into aryl nitrile oxides at ambient temperature. In this one‐pot transformation, a 1,2,4‐oxadiazole skeleton was efficiently formed. This methodology needs no extra additives and features wide substrate scope, good functional...
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