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Iron Catalyzed Dearomatization of Pyridines into Annelated Azepine Derivatives in a One-Step, Three-Component Reaction.

Alexander MamontovLiang ChangHéloïse DossmannBenoı T BertrandLuc DechouxSerge Thorimbert
Published in: Organic letters (2022)
Commercially available Fe(TTP)Cl catalyzes three-component dearomative formal cycloaddition reactions between pyridines, diazo compounds, and coumalates. Diversely substituted annelated seven-membered N-heterocycles could be generated in less than 10 min in one step at room temperature. The reaction is compatible to gram scale. The extension to benzimidazoles in place of pyridines has been successfully demonstrated. The mechanism of this reaction has been carefully examined by computational studies that corroborate the observed regioselectivities.
Keyphrases
  • room temperature
  • ionic liquid
  • gram negative
  • metal organic framework
  • structure activity relationship