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. 2014 Apr 16;136(15):5555-8.
doi: 10.1021/ja500841f. Epub 2014 Apr 4.

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

Kyosuke Nakamura  1 , Seiichi Furumi, Masayuki Takeuchi, Tetsuro Shibuya, Ken Tanaka
Affiliations

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

Kyosuke Nakamura et al. J Am Chem Soc. .

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.

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