Bis(pyrazolyl)borate Cu(I) complex catalysts with intramolecular C−H⋅⋅⋅Cu weak interaction as a “switch” have been applied in catalytic carbene/nitrene transfer and addition to C=C bonds. The catalytic cyclopropanation/aziridination reaction demonstrates wide substrate scope, high yields, and selectivity.

中文翻译：

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双(吡唑基)硼酸铜(I)配合物催化烯烃的选择性环丙烷化/氮丙啶化

具有分子内 C−H···Cu 弱相互作用作为“开关”的双（吡唑基）硼酸铜（I）络合物催化剂已应用于催化卡宾/氮烯转移和 C=C 键的加成。催化环丙烷化/氮丙啶化反应表现出广泛的底物范围、高产率和选择性。