Visible Light-Induced Regioselective/Dehydrogenative Silylation of (Thio)chromones via Tricatalytic Process

Key Points

• The aim is to develop a method for regioselective silylation of (thio)chromones using visible light.
• Utilized a tricatalytic system combining hydrogen atom transfer, photoredox, and transition metal catalysis.
• Conducted reactions under ambient air conditions.
• Achieved oxidant- and noble metal-free silylation processes.
• Demonstrated high regioselectivity in the silylation of (thio)chromones.
• Effectively performed under mild conditions without detrimental reagents.
• Showed potential for broad application in organic synthesis.