Rhodium(III)-Catalyzed Synthesis of Cinnolinium Salts from Azobenzenes and Alkynes: Application to the Synthesis of Indoles and Cinnolines

Authors

  • Krishnamoorthy Muralirajan,

    1. Department of Chemistry, National Tsing Hua University, Hsinchu, 30013 (Taiwan), Fax: (+886) 3572-4698
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  • Prof. Dr. Chien-Hong Cheng

    Corresponding author
    1. Department of Chemistry, National Tsing Hua University, Hsinchu, 30013 (Taiwan), Fax: (+886) 3572-4698
    • Department of Chemistry, National Tsing Hua University, Hsinchu, 30013 (Taiwan), Fax: (+886) 3572-4698

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Abstract

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Versatile salts: A new rhodium-catalyzed synthesis of cinnolinium salts from various azobenzenes and alkynes under air is described. These salts readily transform into three important classes of products, including indoles, indoloindoles, and cinnolines (see scheme).

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