Silver phosphate supported on metal–organic framework (Ag3PO4@MOF‐5) as a novel heterogeneous catalyst for green synthesis of indenoquinolinediones

A new Ag₃PO₄@MOF‐5 catalyst has been synthesized and successfully applied in the green synthesis of a library of indenoquinolinediones via one‐pot, multi‐component reaction of aldehyde, indanedione and enaminone under solvent‐free conditions at room temperature. The catalyst was characterized using various spectroscopic techniques and elemental analysis. The catalyst can be easily separated and exhibits significant recyclability, with insignificant loss of activity after four consecutive runs. The protocol presented has advantages like green reaction conditions, high yield of products, no need for column chromatography and good recyclability.