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    • Amide bond formation in aqueous solution: direct coupling of metal carboxylate salts with ammonium salts at room temperature
    Authors: Truong Thanh. Tung; John Nielsen;  Advisor: -;  Co-Author: - (2021)

    Herein, we report a green, expeditious, and practically simple protocol for direct coupling of carboxylate salts and ammonium salts under ACN/H2O conditions at room temperature without the addition of tertiary amine bases. The water-soluble coupling reagent EDC·HCl is a key component in the reaction. The reaction runs smoothly with unsubstituted/substituted ammonium salts and provides a clean product without column chromatography. Our reaction tolerates both carboxylate (which are unstable in other forms) and amine salts (which are unstable/volatile when present in free form). We believe that the reported method could be used as an alternative and suitable method at the laboratory and...