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A silver(I) triflate‐catalyzed protocol for the post‐Ugi synthesis of tetracyclic spiroindolines has been developed. The protocol worked best for indole‐3‐carbaldehyde‐derived Ugi adducts obtained using anilines and 3‐aryl propiolic acids. Thus, it is complementary to the previous cationic gold‐catalyzed procedure that was developed for analogues Ugi substrates derived from aliphatic amines and 3‐alkyl...
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