Oxidative trifluoromethylation and fluoroolefination of unactivated olefins
作者:Ye-bin Wu、Guo-ping Lu、Tao Yuan、Zhu-bing Xu、Li Wan、Chun Cai
DOI:10.1039/c6cc08178a
日期:——
The fluorine-containing organic compounds are becoming privileged in medicinal chemistry. Described herein is a mild and efficient method for the radical addition of olefins with TMSCF3 and TMSCF2R (R=COOEt or...
An economical approach to α‐CF3‐substituted ketones, which are important intermediates in synthetic and medicinal chemistry, employs olefins and the readily available Langlois reagent (CF3SO2Na). The reaction is operationally simple, proceeds at room temperature, and exhibits an excellent tolerance toward a wide variety of functional groups.
一种经济的方法,以α-CF 3 -取代的酮,这是在合成和药物化学的重要中间体,采用烯烃和容易得到的试剂朗格卢瓦(CF 3 SO 2 Na)的。该反应操作简单,在室温下进行,并且对多种官能团表现出优异的耐受性。
Combining Photoredox‐Catalyzed Trifluoromethylation and Oxidation with DMSO: Facile Synthesis of α‐Trifluoromethylated Ketones from Aromatic Alkenes
organic compounds with a trifluoromethyl group. A new and facile synthesis of ketones with a trifluoromethyl substituent in the α‐position proceeds through a one‐potphotoredox‐catalyzed trifluoromethylation–oxidation sequence of aromatic alkenes. Dimethyl sulfoxide (DMSO) serves as a key and mild oxidant under these photocatalytic conditions. Furthermore, an iridium photocatalyst, fac[Ir(ppy)3] (ppy=2‐phenylpyridine)
Highly efficient Cu(I)-catalyzed trifluoromethylation of aryl(heteroaryl) enol acetates with CF3 radicals derived from CF3SO2Na and TBHP at room temperature
An efficient method for the Cu(I)-catalyzed synthesis of α-trifluoromethyl ketones via the addition of CF3 to aryl(heteroaryl) enolacetates by using the readily available CF3SO2Na (Langlois reagent) has been developed. The reaction is experimentally simple and carried out at room temperature, providing good to excellent yields with wide functional group tolerance.
通过加入CF的对α-三氟甲基酮的铜(I)催化合成的有效方法3至芳基通过使用容易获得的CF(杂芳基)乙酸酯烯醇3 SO 2 Na(上兰洛伊斯试剂)已被开发。该反应是简单的实验,并在室温下进行,以优异的产率提供了良好的与宽官能团耐受性。
Pd-catalyzed defluorination/arylation of α-trifluoromethyl ketones <i>via</i> consecutive β-F elimination and C–F bond activation
An unprecedented Pd-catalyzed activation of a CF3 group is reported herein. The key to the success of this reaction is the combination of consecutive β-F elimination and C–Fbond oxidative addition of a trifluoromethyl group. It also represents the first general application of α-trifluoromethyl ketones as building blocks by C–Fbondactivation.