partially fluorinated arenes. A nickel-catalyzed cross-coupling between a polyfluoroarene and an organozinc reagent in the presence of POP selectively produces a monosubstitution product. Aryl and alkylzinc reagents smoothly take part in the reaction. It is speculated that monosubstitution is the result of accelerated product expulsion from the product/catalyst complex.
带有醇盐基团的新的
二膦(POP)
配体使我们能够合成部分
氟化的
芳烃。在POP存在下,多
氟芳烃与
有机锌试剂之间的
镍催化交叉偶联选择性地产生单取代产物。芳基和烷基
锌试剂可平稳地参与反应。据推测,单取代是产物/催化剂配合物加速排出产物的结果。