An Eco-friendly Strategy for the Synthesis of Spiro-benzimidazoquinazolinone and Spiro-benzothiazoloquinazolinone Derivatives using β-cyclodextrin as a Supramolecular Catalyst.

The catalyst demonstrated remarkable effectiveness in producing the target compounds and conducting the reaction with different initial substances, resulting in excellent yields of the products, thereby confirming the broad applicability and versatility of this method.