Titanocenes as Electron Transfer Catalysts: Reagent Controlled Catalytic Radical Reactions
Titanocenes as Electron Transfer Catalysts: Reagent Controlled Catalytic Radical Reactions
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二茂钛作为电子转移催化剂：试剂控制的催化自由基反应
作者：
A. Gansaeuer
：已经开发出用于进行过渡金属催化试剂控制的自由基反应的新型催化方法。醛和环氧化物被用作自由基前体。在电子转移后，二茂钛催化剂与形成的自由基中心紧密结合，从而可以控制随后的反应。催化活性的二茂钛络合物通过甲硅烷基化或质子化和用容易获得的、成本有效的化学计量还原剂原位还原而再生。
: Novel, catalytic processes for conducting transition metal catalyzed reagent controlled radical reactions have been developed. Aldehydes and epoxides are used as radical precursors. After electron transfer binding of the titanocene catalyst in close proximity to the formed radical center allows control of the ensuing reactions. The catalytically active titanocene complex is regenerated by silylation or protonation and in situ reduction with a readily available, cost efficient stoichiometric reductant.