New Pathways for the Dual Gold‐Catalyzed Cyclization of Diynes |
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| Authors: | M Sc Svetlana Tšupova Dr Max M Hansmann Dr Matthias Rudolph Prof Dr A Stephen K Hashmi |
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| Institution: | 1. http://www.hashmi.de;2. Organisch-Chemisches Institut, Ruprecht-Karls-Universit?t Heidelberg, Heidelberg, Germany), Fax: (+49)?6221-54-4205;3. Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia |
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| Abstract: | The reaction of thiophene‐based diynes with dual‐activation gold catalysts can provide cyclobutene derivatives or different polycycles by selective C?H insertion reactions. Also, the first σ,π‐digold diyne complex was obtained in a stoichiometric reaction, providing insight into the dual activation mechanism. The new products were unambiguously identified by X‐ray single‐crystal structure analysis. |
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| Keywords: | alkynes homogeneous catalysis C− H insertion gold thiophenes |
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