Catalyst-Free and Solvent-Free Visible Light Assisted Synthesis of Tetrahydrobenzo[<i>b</i>]Pyran Scaffolds at Room Temperature
Farzaneh Mohamadpour
Abstract
A catalyst-free and solvent-free three-component tandem strategy for synthesizing tetrahydrobenzo[b]pyran scaffolds through Knoevenagel–Michael cyclocondensation is reported using visible light irradiation as a green promoter at room temperature. The prominent benefits of the existing protocol are catalyst-free, solvent-free, using commercially accessible, inexpensive preliminary substances, operational simplicity, energy-effectiveness, great yields, high atom-economy, thus meeting some features of sustainability and green chemistry.
Topics & Concepts
ChemistryCatalysisAtom economyKnoevenagel condensationGreen chemistryTandemPyranCombinatorial chemistryNanotechnologyPhotochemistryOrganic chemistryChemical engineeringReaction mechanismMaterials scienceEngineeringComposite materialMulticomponent Synthesis of HeterocyclesSynthesis of Organic CompoundsSynthesis of Indole Derivatives