Transition-Metal-Free Synthesis of Fluorinated Arenes from Perfluorinated Arenes Coupled with Grignard Reagents
摘要:
A simple method to obtain organofluorine compounds from perfluorinated arenes coupled with Grignard reagents in the absence of a transition-metal catalyst was reported. In particular, the perfluorinated arenes could react not only with aryl Grignard reagents but also with alkyl Grignard reagents in moderate to good yields.
perfluorophenyl‐ and perfluoroalkyl‐substituted alkanes was investigated. Alkylation of alkanes having a perfluoroalkyl group and alkyl‐substituted perfluorobenzenes avoided α‐C–H bonds. Radical polareffects in the SH2 transition states could explain this avoidance of α‐C–H functionalization.
研究了TBADT催化的全氟苯基和全氟烷基取代的烷烃的C(sp 3)–H官能化。具有全氟烷基的烷烃和烷基取代的全氟苯的烷基化可避免α-CH键。S H 2过渡态中的自由基极性效应可以解释这种对α-CH-H功能化的避免。
Transition-Metal-Free Synthesis of Fluorinated Arenes from Perfluorinated Arenes Coupled with Grignard Reagents
作者:Yunqiang Sun、Hongjian Sun、Jiong Jia、Aiqin Du、Xiaoyan Li
DOI:10.1021/om4011609
日期:2014.2.24
A simple method to obtain organofluorine compounds from perfluorinated arenes coupled with Grignard reagents in the absence of a transition-metal catalyst was reported. In particular, the perfluorinated arenes could react not only with aryl Grignard reagents but also with alkyl Grignard reagents in moderate to good yields.