Direct construction of sulfonated 2H-chromenes from inactivated alkynes via a photocatalytic three-component reaction

Key Points

• Sulfonated 2H-chromenes are efficiently synthesized from inactivated alkynes through a novel method.
• The reaction achieves notable yields, with efficiencies reaching up to 80% in optimal conditions.
• Utilizing photocatalysis allows the harnessing of light energy to drive the reaction forward.
• This method could expand the toolbox for organic synthesis, especially in pharmaceutical chemistry.