smoothly with a wide range of sp3-carbon electrophiles, including propargyl methanesulfonates and unactivated alkyl triflates, to give Sonogashira-type products, via a novel ion pair-assisted nucleophilic substitution mechanism. An ion pair–organic complex, investigated using computational chemistry and in situ NMR experiments, may play a crucial role in this reaction.
炔基三
氟硼酸盐亲核试剂通过新的离子对辅助亲核取代机制与多种sp 3 -碳亲电子试剂(包括
甲磺酸炔
丙酯和未活化的
三氟甲磺酸烷基酯)顺利反应,生成 Sonogashira 型产物。使用计算
化学和原位核磁共振实验研究的离子对-有机复合物可能在该反应中发挥关键作用。