Intermolecular hydrogen bonding and anion binding of N-benzamido-N'-benzoylthioureas

An amino group is inserted in the N'-phenyl side and the newly designed N-benzamido-N'-benzoylthioureas are bound to anions despite the strong intramolecular hydrogen bond (IHB). The results have shown that the potential anion receptors or organocatalysts are developed on the basis of this framework with a wide structural diversity.