Enantioselective synthesis and enhanced circularly polarized luminescence of S-shaped double azahelicenes

K Nakamura, S Furumi, M Takeuchi…

Index: Nakamura, Kyosuke; Furumi, Seiichi; Takeuchi, Masayuki; Shibuya, Tetsuro; Tanaka, Ken Journal of the American Chemical Society, 2014 , vol. 136, # 15 p. 5555 - 5558

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Citation Number: 67

Abstract

The enantioselective synthesis of azahelicenes and S-shaped double azahelicenes has been achieved via the Au-catalyzed sequential intramolecular hydroarylation of alkynes. The use of excess AgOTf toward a Au (I) complex is crucial for this transformation. Interestingly, the circularly polarized luminescence activity of the S-shaped double azahelicenes was significantly higher than that of the azahelicenes.