3 years ago

Enantioselective Synthesis of Indole-Based Biaryl Atropisomers via Palladium-Catalyzed Dynamic Kinetic Intramolecular C–H Cyclization

Enantioselective Synthesis of Indole-Based Biaryl Atropisomers via Palladium-Catalyzed Dynamic Kinetic Intramolecular C–H Cyclization
Mengqing Hou, Zhenhua Gu, Congfa He, Zixi Zhu
We report here a palladium-catalyzed enantioselective synthesis of indole-based atropisomers via an intramolecular dynamic kinetic C–H cyclization. The TADDOL-derived phosphoramidite ligand proves to be most efficient in this directing-group-free transformation, delivering products with up to 96:4 er. The thermal stability of the axial chirality of the atropisomers has also been investigated.

Publisher URL: http://dx.doi.org/10.1021/acscatal.7b01855

DOI: 10.1021/acscatal.7b01855

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