One-pot synthesis of indenonaphthopyrans catalyzed by copper(II) triflate: A comparative study of reflux and ultrasound methods
Acta Chimica Slovenica, vol.61, no.3, pp.623-628, 2014 (SCI-Expanded, Scopus)
- Publication Type: Article / Article
- Volume: 61 Issue: 3
- Publication Date: 2014
- Journal Name: Acta Chimica Slovenica
- Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Page Numbers: pp.623-628
- Keywords: Indenonaphthopyran, ultrasound, copper(II) triflate, 1,3-indandione, 2-naphthol
- Istanbul Gelisim University Affiliated: Yes
Abstract
An effective and environment-friendly protocol for the synthesis of indenonaphthopyrans has been developed by onepot reaction of 2-naphthol, various aromatic aldehydes and 1,3-indandione, in the presence of copper(II) triflate as the catalyst while using reflux (Method A) and ultrasound (Method B). The Method B approach offers the advantages of a simple reaction method, short reaction time, excellent yield, and showcases the economic importance of the catalysts for such processes.