Modular three-component synthesis of 6H-benzochromenone based blue luminogens under catalyst- and solvent-free conditions

Abstract

Highly efficient synthesis of benzochromenone based blue luminogens via a three-component reaction of 2-hydroxychalcones, primary amines and β-ketoesters was demonstrated. The compounds show blue fluorescence with colour purity higher than 80%, thus making them viable candidates for the development of optoelectronic devices.