One-pot Synthesis of Indenonaphthopyrans Catalyzed by Copper(II) Triflate: A Comparative Study of Reflux and Ultrasound Methods
Keywords:Indenonapthapyrane, ultrasound, copper(II) triflate, 1, 3-indandione, 2-naphthol
AbstractAn effective and environment-friendly protocol for the synthesis of indenonaphthapyranes has been developed by one-pot reaction of 2-naphthol; various aromatic aldehydes; and 1,3-indandione, in the presence of copper(II) triflate as catalyst, while using reflux (Method A) and ultrasound (Method B). The Method B approach offers the advantages of reaction, a simple method, short reaction time, excellent yield, and the economic importance of the catalyst or processes.
Except where otherwise noted, articles in this journal are published under the Creative Commons Attribution 4.0 International License