One-pot Synthesis of 1H-benzo[f]chromen-2-yl (phenyl)methanone Derivatives in the Presence of Copper Triflate as Catalyst Using Ultrasonic Irradiation
Tamrat Yimenu Zeleke
Department of Chemistry, Faculty of Natural and Computational Sciences, Wachemo University, 667, Hossana, Ethiopia
Kadir Turhan
Department of Chemistry, Faculty of Science and Art, Yildiz Technical University, 34210, Davutpasa, Esenler, İstanbul, Turkey
Zuhal Turgut *
Department of Chemistry, Faculty of Science and Art, Yildiz Technical University, 34210, Davutpasa, Esenler, İstanbul, Turkey
*Author to whom correspondence should be addressed.
Abstract
A rapid, efficient and environment-friendly protocol for the synthesis of naphthopyranes has been developed by one-pot condensation of 2-naphthol, various aromatic aldehydes and benzoylacetone or 1,3-diphenyl-1,3-propandione in the presence of Cu(OTf)2 as catalyst under ultrasonic irradiation. The present approach offers the advantages of clean reaction, simple methodology, short reaction time, high yield and economic availability of the catalyst.
Keywords: Copper(II)triflate, naphthopyran, one-pot reaction, ultrasound