Iranian Journal of Catalysis (IJC) A facile one-pot four-component synthesis of dihydropyrrol-2-ones using Cl3CCO2H Volume 5 (2015) Issue 1, March 2015 2024 02 03 A facile one-pot four-component synthesis of dihydropyrrol-2-ones using Cl3CCO2H EN Nourallah Hazeri Chemistry Department, Faculty of Science, University of Sistan and Baluchestan, Zahedan, Iran Malek Taher Maghsoodlou Chemistry Department, Faculty of Science, University of Sistan and Baluchestan, Zahedan, Iran Sajad Mohamadian-Souri Department of Chemistry, Faculty of Science, University of Sistan & Baluchestan, P. O. Box 98135-674 Zahedan, Iran Mojtaba Lashkari Faculty of Science, Velayat University, Iranshahr, Iran. Majid Ghashang Department of Chemistry, Najafabad Branch, Islamic Azad University, P.O. Box: 517; Najafabad, Iran Journal Article 2024 02 03 A convenient synthesis of different types of polyfunctional dihydropyrrol-2-ones via one-pot four component reactions of formaldehyde, dialkyl acetylenedicarboxylates and amines, catalyzed by trichloroacetic acid (Cl3CCO2H) at room temperature has been investigated. The significant advantages of this synthetic method are mild reaction conditions, available and inexpensive material, short reaction times, good yields, simple work-up.