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      Iron-catalyzed reductive radical cyclization of organic halides in the presence of NaBH4: evidence of an active hydrido iron(I) catalyst.

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          Abstract

          Iron made'em: iron(II) complexes such as FeCl(2) and [FeCl(2)(dppe)(2) ] (dppe=1,2-bisdiphenylphosphinoethane) are efficient precatalysts for the radical cyclization of unsaturated iodides and bromides in the presence of NaBH(4). Cyclic voltammetry studies suggests that the reaction occurs through a radical mechanism via an anionic hydrido iron(I) species as the key intermediate for the activation of the substrates by electron transfer.

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          Author and article information

          Journal
          Angew. Chem. Int. Ed. Engl.
          Angewandte Chemie (International ed. in English)
          Wiley-Blackwell
          1521-3773
          1433-7851
          Jul 09 2012
          : 51
          : 28
          Affiliations
          [1 ] Institut Parisien de Chimie Moléculaire, UMR CNRS, UPMC Univ-Paris, Sorbonne Universités, France.
          Article
          10.1002/anie.201200589
          22689436

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