Functionalization of non-activated C–H bonds in ketones and imines with HF/SbF5/CCl4
作者:Sébastien Thibaudeau、Agnès Martin-Mingot、Marie-Paule Jouannetaud、J.C Jacquesy
DOI:10.1016/s0040-4020(02)00692-0
日期:2002.8
Reaction of cyclic ketones 2–6 and imines 15–17 in HF/SbF5 in presence of CCl4 yield hydroxy or fluoroderivatives, hydride abstraction occurring at a site located far from the functional group. Whereas ketones 2–5 yield only hydroxy derivatives, through cyclic carboxonium ion, imines 15, 16 N-protonated in the media conditions give only fluoroderivatives 18, 19, respectively, after quenching with HF–pyridine
环酮的反应2 - 6和亚胺15 - 17中HF /的SbF 5在四氯化碳的存在4产率羟基或fluoroderivatives,氢化物提取在位于远离官能团的位点发生。而酮2 - 5产率只有羟基衍生物,通过环状carboxonium离子,亚胺15,16的N-质子化的培养基条件只给出fluoroderivatives 18,19分别与HF-吡啶淬火后。当从大分子环酮24和24开始时,环收缩是有效的。25和亚胺26生成羟基或氟代环己酮和/或环庚酮的混合物。