Dehydrogenative Photocyclization of 3-Styryl Indoles to Fused Indole Systems
Yunus Taskesenligil,
Nurullah Saracoglu
Abstract:The synthesis of 5-aryl-or 5,6-diaryl-11H-benzo-[a]carbazoles has been achieved from 3-styryl indoles through catalyst-free photoinitiated dehydrogenative cyclization transformation, providing a range of structurally diverse products in excellent yields under mild conditions. The protocol is also applicable to furan and thiophene samples. This Mallory-type reaction takes place in an argon atmosphere without external oxidants. Finally, detailed mechanistic studies were performed, and kinetic isotope effect expe… Show more
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