mechanochemistry is described. Under solvent-free ball-milling, mechanoradicals (SO4•–) were generated from persulfate via in situ homolysis in the solid state, at as low as −50 °C. These highly oxidizing radicals readily transform alkyl trifluoroborate salts to their corresponding carbon-based radicals for subsequent C–C bond formation with N-heterocycles. Mechanistic studies unambiguously confirmed the involvement
描述了一种由机械
化学促进的环保型 N-杂
芳烃 C-H 烷基化新方法。在无溶剂球磨条件下,过
硫酸盐在低至-50 °C 的温度下通过固态原位均解生成机械自由基 (SO 4 •– )。这些高氧化性自由基很容易将烷基三
氟硼酸盐转化为相应的碳基自由基,随后与 N-杂环形成 C-C 键。机理研究明确证实了氧自由基和烷基自由基中间体的参与。