complexes such as FeCl2 and [FeCl2(dppe)2] (dppe=1,2‐bisdiphenylphosphinoethane) are efficient precatalysts for the radical cyclization of unsaturated iodides and bromides in the presence of NaBH4 (see scheme). 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
铁制造的东西:
铁(II)络合物,例如FeCl 2和[FeCl 2(dppe)2 ](dppe = 1,2-双
二苯基膦基乙烷)是在NaBH 4存在下对不饱和
碘化物和
溴化物进行自由基环化的有效预催化剂(请参阅方案)。循环伏安法研究表明,该反应是通过自由基机理发生的,该阴离子机理是阴离子氢化
铁(I)作为电子转移活化底物的关键中间体。