Visible Light Induced 6π Electrocyclization: Divergent Synthesis of Seven Membered Ring Derivatives

Key Points

• To investigate the use of visible light for the electrocyclization reaction to synthesize seven-membered rings.
• Utilized visible light to induce a 6π electrocyclic reaction.
• Employed BHT (butylated hydroxytoluene) as a reaction medium.
• Conducted experiments on indole derivatives for ring formation.
• Successfully synthesized various seven-membered ring derivatives.
• Demonstrated selective formation of products based on the indole structure.
• Highlighted the effectiveness of BHT in promoting the reaction under visible light.