a [Cu(NHC)] (NHC=N‐heterocyclic carbene) catalyst is disclosed for the efficient C−H allylation of polyfluoroarenes using allyl halides in benzene at room temperature. The same catalyst system also promotes an isomerization‐induced alkenylation of initially the generated allyl arenes when the reaction is run in tetrahydrofuran. Significantly, not only electron‐deficient but also electron‐rich (hetero)arenes
公开了[Cu(NHC)](NHC = N-杂环卡宾)催化剂的新反应性,用于在室温下使用烯丙基卤化物在苯中进行多
氟芳烃的高效CH烯丙基化。当反应在
四氢呋喃中进行时,相同的催化剂体系还促进了最初生成的烯丙基
芳烃的异构化诱导的烯基化。值得注意的是,不仅缺电子的
芳烃而且富电子的(杂)
芳烃都经历了这种双键迁移过程,从而导致了烯基化产物。本系统具有温和的反应条件,相对于
芳烃底物和烯丙基卤化物反应物的广泛范围,良好的官能团耐受性和高立体选择性。