Tunable Synthesis of Oxindoles and Sulfonated Oxindoles via Photoredox-Catalyzed C-H/C-H Coupling

Key Points

• The aim is to develop a mild and switchable method for synthesizing oxindoles through photoredox-catalyzed reactions.
• Developed a photoredox-catalyzed protocol for C-H/C-H coupling
• Utilized arenes and N-arylacrylamides as starting materials
• Executed one-pot reactions for efficiency
• Achieved modular construction of 3,3-disubstituted oxindoles
• Demonstrated switchability of the synthesis
• Yielded high efficiency in the coupling process