| Summary: | An efficient, mild, and green method was developed for the synthesis of indeno[1,2-b]quinoxaline derivatives via o-phenylenediamine (OPD) and 2-indanone derivatives utilizing <i>β</i>-cyclodextrin (<i>β</i>-CD) as the supramolecular catalyst. The reaction can be carried out in water and in a solid state at room temperature. <i>β</i>-CD can also catalyze the reaction of indan-1,2-dione with OPD with a high degree of efficiency. Compared to the reported methods, this procedure is milder, simpler, and less toxic, making it an eco-friendly alternative. In addition, the <i>β</i>-CD can be recovered and reused without the loss of activity.
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