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[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. |
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