Assembly of Substituted Homophthalimides via CuI-Catalyzed Coupling of 2-Bromobenzamides with β-Keto Ester
摘要:
CuI catalyzed coupling of 2-bromobenzamides and beta-keto esters takes place at 90 degrees C in i-PrOH to afford substituted homophthalimides in good yields. This transformation undergoes a cascade coupling/intramolecular condensation process, which allows assembly of a wide range of substituted homophthalimides by varying 2-bromobenzamides and beta-keto esters.