OICC Press Iranian Journal of Catalysis 2345-4865 4 2 2024 02 03 Eggshell: A green and efficient heterogeneous catalyst for the synthesis of pyrano[3,2-c]quinoline EN Leila Youseftabar-Miri Department of Chemistry, Izeh Branch, Islamic Azad University, Izeh, Iran Fatemeh Akbari Department of Chemistry, Science and Research Branch, Islamic Azad University, Ahwaz, Iran. Farshid Ghraghsahar Department of Chemistry, Science and Research Branch, Islamic Azad University, Ahwaz, Iran. Journal Article 2024 02 03 Eggshell was found to be a versatile heterogeneous catalyst for the synthesis of pyrano[3,2-c]quinoline derivatives in good yields. This protocol has the advantages of environmental friendliness, short reaction time, low cost and convenient operation.