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■ Synthesis of Isoquinolinium via Rhodium(III)-Catalyzed Oxidative Annulation between Aldimines and Alkynes

Cheng-Qi Wang, Wei Zhang, Hui Lin, Fu Su,* and Lin Dong*

*West China School of Pharmacy, Sichuan University, 17# Third Section of South Renmin Road 610041, China

Abstract

Various isoquinolinium salts have been efficiently synthesized from aldehyde imines and alkynes via RhIII-catalyzed C–H activation and annulation reaction. A broad substrate scope has also been studied to provide various isoquinolinium triflate salts.