OICC Press Iranian Journal of Catalysis 2345-4865 4 2 2024 02 03 L-proline: An efficient catalyst for the synthesis of quinoline derivatives in aqueous media EN Elham Davoodi Chemistry Department, Izeh Branch, Islamic Azad University, Izeh, Iran. Leila Youseftabar-Miri Department of Chemistry, Izeh Branch, Islamic Azad University, Izeh, Iran Hamideh Hosseinjani-Pirdehi Chemistry Department, University of Guilan, 41335-1914, Rasht, Iran. Journal Article 2024 02 03 An efficient and direct procedure for the synthesis of benzo[h]-indeno[1,2-b]-quinoline derivatives has been described. The procedure employs a three-component condensation reaction in one-pot using 2H-indene-1, 3-dione, naphthalen-1-amine,and aldehydes in the presence of catalytic amount of L-prolinein aqueous media.