Transamidation catalyzed by a recoverable and reusable polyDMAP-based hafnium chloride and montmorillonite KSF

In this article, we described the use of an easily available polymer-based hafnium chloride and montmorillonite KSF catalyst (HfCl4/KSF-polyDMAP) in transamidation under relatively mild conditions. This metal catalyst can be easily recovered and reused in this reaction to give the corresponding amides in good yields.