Scopus (CiteScore 2022 =3.0, Q3) , ISC

Document Type : Original Research Article


Department of Chemistry, College of Science, University of Guilan, Zip Code 41335, Rasht, Iran


This study focused on the applicability of melamine as a cheap and efficient organocatalyst in the acceleration of the synthesis of 4-aryl-4H-chromenes derivatives. Under the selected conditions, a wide range of aldehydes readily underwent condensation with activated phenols and malononitrile to afford the high to excellent yields. Also, organocatalyst was used for the synthesis of 2-amino-5,10-dioxo-5,10-dihydro-4H-benzo[g]chromenes by the reaction of aromatic aldehydes, malononitrile and 2-hydroxynaphthalene-1,4-dione in refluxing H2O:EtOH. This method provides several advantages such as convenient work-up, mild reaction conditions, use of an inexpensive and readily available catalyst, short reaction times, high yields of the products and reusability of the catalyst.

Graphical Abstract

Effective and convenient synthesis of 2-amino-4H-chromenes promoted by melamine as a recyclable organocatalyst


Main Subjects

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