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

Kyosuke Nakamura1, Seiichi Furumi, Masayuki Takeuchi

  • 1Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology , Koganei, Tokyo 184-8588, Japan.

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Aryldiazonium Salts to Azo Dyes: Diazo Coupling01:11

Aryldiazonium Salts to Azo Dyes: Diazo Coupling

The reaction of weakly electrophilic aryldiazonium (also called arenediazonium) salts with highly activated aromatic compounds leads to the formation of products with an —N=N— link, called an azo linkage. This reaction, presented in Figure 1, is known as diazo coupling and occurs without the loss of the nitrogen atoms of the aryldiazonium salt. Highly activated aromatic compounds such as phenols or arylamines favor the diazo coupling reaction. The coupling generally occurs at the...
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