Pd-Catalyzed Alkyne and Aryne Annulations: Synthesis and Photophysical Properties of π-Extended Coumarins
Hemanta Hazarika, Dhiraj Dutta, Sanfaori Brahma, Babulal Das, Pranjal Gogoi
Abstract
A Pd-catalyzed alkyne and aryne annulation strategy via C–H activation has been implemented for the synthesis of π-extended coumarins. This synthetic strategy provides a wide range of π-extended coumarins in moderate to good yields with good functional group compatibility. Photophysical properties of the synthesized π-extended coumarins have been evaluated, and some of them show interesting fluorescent properties. Three of the synthesized coumarins have been unambiguously established by a single-crystal XRD study.
Topics & Concepts
AlkyneAryneChemistryAnnulationCatalysisCombinatorial chemistryCoumarinCompatibility (geochemistry)Organic chemistryChemical engineeringEngineeringCyclization and Aryne ChemistrySynthesis and Properties of Aromatic CompoundsCatalytic Alkyne Reactions