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Zirconocene dichloride (Cp2ZrCl2) has been shown to be an effective catalyst for the transamidation of primary amides with amines in cyclohexane at 80 °C in 5–24 hours. For favourable substrates, the reaction can be performed at temperatures as low as 30 °C.
Atkinson, B. N., Chhatwal, A. R., Lomax, H. V., Walton, J. W., & Williams, J. M. J. (2012). Transamidation of primary amides with amines catalyzed by zirconocene dichloride. Chemical Communications, 48(95), 11626-11628. https://doi.org/10.1039/c2cc37427g