Copper(0)-mediated fluoroalkylation of iodobenzene with 2-bromo-1,1,2,2-tetrafluoroethyl compounds: Investigation on the influence of R substituent on the reactivity of RCF2Cu species
摘要:
We have made a systematic investigation on the copper(0)-mediated tetrafluoroethylenation of iodobenzene with structurally diverse 2-bromo-1,1,2,2-tetrafluoroethyl compounds. A comparison of this reaction with 1,2,2-trifluoro-1-phenylethylation and the known functionalized difluoroalkylation demonstrates that the substituent R of alpha,alpha-difluoroalkyl copper species RCF2Cu plays a crucial role on their reactivity, which is believed to be useful for the development of new fluoroalkylation reactions under the promotion of transition metals. (C) 2014 Elsevier B.V. All rights reserved.
An Efficient Preparation of New Sulfonyl Fluorides and Lithium Sulfonates
作者:Fabien Toulgoat、Bernard. R. Langlois、Maurice Médebielle、Jean-Yves Sanchez
DOI:10.1021/jo701318n
日期:2007.11.1
polyfluoroalkanesulfonyl fluorides is reported. This method, based on the synthesis of polyfluoroalkyl trimethyl silanes (precursors of polyfluoroalkylsulfinates) as intermediates, allows the successive transformations to be carried out in one pot. Moreover, these sulfonyl fluorides can be obtained from the corresponding sulfinates by electrophilic fluorination. This original approach avoids isolation and purification
报道了几种多氟链烷磺酰氟的有效制备方法。该方法基于多氟烷基三甲基硅烷(多氟烷基亚磺酸盐的前体)作为中间体的合成,可以在一个罐中进行连续的转化。而且,这些磺酰氟可以通过亲电氟化从相应的亚磺酸盐获得。这种原始方法避免了某些热或水解不稳定中间体的分离和纯化。因此,已经从卤代二氟甲基化的前体RCF 2 X(X = F,Br; R = ArC(O),ArS(O)n(CF 2)m ; n = 0,1,2; m制备了一系列新的磺酰氟。 = 1、2),并已转化为相应的磺酸锂,它们有潜力用作锂电池的电解质。
Copper(0)-mediated fluoroalkylation of iodobenzene with 2-bromo-1,1,2,2-tetrafluoroethyl compounds: Investigation on the influence of R substituent on the reactivity of RCF2Cu species
作者:Jieming Zhu、Chuanfa Ni、Bing Gao、Jinbo Hu
DOI:10.1016/j.jfluchem.2014.08.011
日期:2015.3
We have made a systematic investigation on the copper(0)-mediated tetrafluoroethylenation of iodobenzene with structurally diverse 2-bromo-1,1,2,2-tetrafluoroethyl compounds. A comparison of this reaction with 1,2,2-trifluoro-1-phenylethylation and the known functionalized difluoroalkylation demonstrates that the substituent R of alpha,alpha-difluoroalkyl copper species RCF2Cu plays a crucial role on their reactivity, which is believed to be useful for the development of new fluoroalkylation reactions under the promotion of transition metals. (C) 2014 Elsevier B.V. All rights reserved.