Unexpected distinction in reactivity of pentafluorobenzenesulfonyl halides toward organolithiums and organomagnesium halides
作者:Vadim V. Bardin、Alexander M. Maksimov
DOI:10.1515/znb-2017-0092
日期:2017.9.26
Abstract C6F5SO2Cl reacts with organolithiums and organomagnesium halides RM (R=Me, Bu, Ph; M=Li, MgX) to give mainly C6F5H and C6F5Cl. C6F5SO2Br and PhMgBr form C6F5H and (C6F5S)2. This is in contrast to known transformations of them which yield exclusively C6F5SO2Nu under the action of O- and N-nucleophiles. Alternatively, C6F5SO2F is converted to C6F5SO2R and 4-BuC6F4SO2F or 2-PhC6F4SO2Ph under
摘要 C6F5SO2Cl 与有机锂和有机卤化镁 RM (R=Me, Bu, Ph; M=Li, MgX) 反应主要生成 C6F5H 和 C6F5Cl。C6F5SO2Br 和 PhMgBr 形成 C6F5H 和 (C6F5S)2。这与它们的已知转化形成对比,后者在 O-和 N-亲核试剂的作用下仅产生 C6F5SO2Nu。或者,C6F5SO2F 在相同条件下转化为 C6F5SO2R 和 4-BuC6F4SO2F 或 2-PhC6F4SO2Ph。当 R=Me 时,除了 C6F5SO2CH3 外,还会形成少量 (C6F5SO2)2CH2 和 4-C6F5SO2CH2C6F4SO2F。