<b>The Chemistry of Carbonyl Fluoride. I. The Fluorination of Organic Compounds</b>
作者:F. S. Fawcett、C. W. Tullock、D. D. Coffman
DOI:10.1021/ja00881a017
日期:1962.11
Carbonylfluoride is a versatile intermediate to organic fluorine compounds. Its reaction with carbonyl compounds such as cyclohexanone, benzaldehyde and benzophenone gives the gem-difluorides, while N,N-dimethylformamide yields a,a-difluorotrimethylamine. Metal fluoride-catalyzed addition at the ethylenic bond in perfluoroolefins forms perfluoroacyl fluorides, while the C--?! unsaturated compounds
We herein reported an electrochemical selective (deutero)hydrodefluorination reaction of trifluoroacetamides. The reaction which exhibits a remarkable chemoselectivity control and delivers (deuterium-labeled) CF2H- and CFH2-products in good yields with high level of deuterium incorporation, respectively, is enabled by the addition of different organoboron sources and (deuterated)water as the deuterium
additive-free strategy for the defluorinative alkylation of trifluoromethyl groups is presented. A broad range of polyfluorinated compounds was easily converted into difluoromethyl products. Simple and inactivated alkenes, such as ethylene, were found to be suitable substrates. Furthermore, complex deuterated α,α-difluoromethyl derivatives could be obtained. The mechanism was investigated by combining
Nickel-catalysed chelation-assisted reductive defluorinative sulfenylation of trifluoropropionic acid derivatives
作者:Yu-Qiu Guan、Jia-Fan Qiao、Yu-Feng Liang
DOI:10.1039/d3cc06041a
日期:——
Herein we reported a directing-group assisted strategy for nickel-catalysedreductive defluorinative sulfenylation of trifluoropropionic acid derivatives with disulfides in the presence of Zn, involving triple C–F bond cleavage. This process yielded a diverse array of carbonyl-sulfide di-substituted alkenes in moderate to good yields with good functional group tolerance. Specifically, the reactions
在此,我们报道了一种在 Zn 存在下,镍催化三氟丙酸衍生物与二硫化物还原脱氟磺基化的导向基团辅助策略,涉及三 C-F 键断裂。该过程以中等至良好的产率产生了多种羰基硫二取代烯烃,并具有良好的官能团耐受性。具体来说,该反应表现出高E选择性, E / Z比率高达>99:1。