Trifluoromethylation of aromatic and hetero-aromatic compounds by CF3I in the presence of Fe(II) compound, H2O2 and dimethylsulfoxide was investigated. Various trifluoromethylated benzene derivatives, six-membered nitrogen-containing aromaticcompounds and five-membered hetero-aromatic compounds were obtained under mild conditions. General orientation of electrophilic substitution of aromaticcompounds was observed
研究了在Fe(II)化合物,H 2 O 2和二甲基亚砜的存在下,CF 3 I对芳族和杂芳族化合物的三氟甲基化作用。在温和条件下获得了各种三氟甲基化苯衍生物,六元含氮芳族化合物和五元杂芳族化合物。与先前在其他自由基三氟甲基化中报道的类似,观察到芳族化合物的亲电子取代的一般取向。
Alternating Current Electrolysis for Organic Electrosynthesis: Trifluoromethylation of (Hetero)arenes
作者:Sachini Rodrigo、Chanchamnan Um、Jason C. Mixdorf、Disni Gunasekera、Hien M. Nguyen、Long Luo
DOI:10.1021/acs.orglett.0c01906
日期:2020.9.4
Paired electrolysis has a limited reaction scope for organic synthesis because it is often not compatible with reactions involving short-lived intermediates. We addressed this limitation using alternatingcurrentelectrolysis (ACE). Using trifluoromethylation of (hetero)arenes as a model reaction, we showed that the yield was improved from 13% using paired electrolysis to 84% using ACE. We have also
Direct C−H Trifluoromethylation of (Hetero)Arenes in Water Enabled by Organic Photoredox‐Active Amphiphilic Nanoparticles
作者:Fabian Eisenreich、Anja R. A. Palmans
DOI:10.1002/chem.202201322
日期:2022.9.16
Photoredox-catalyzed trifluoromethylations of a variety of small organic molecules were studied in water with the aid of amphiphilic polymeric nanoparticles. Excellent recyclability of the nanoparticles, high efficacy and selectivity, and the use of low intensity LED or sunlight render this method versatile and environmentally friendly.
借助两亲性聚合物纳米粒子,研究了水中各种小有机分子的光氧化还原催化的三氟甲基化。纳米颗粒优异的可回收性、高功效和选择性,以及低强度 LED 或阳光的使用,使得该方法具有多功能性和环保性。
Direct Decarboxylation of Trifluoroacetates Enabled by Iron Photocatalysis**
作者:Sara Fernández‐García、Veronika O. Chantzakou、Francisco Juliá‐Hernández
DOI:10.1002/anie.202311984
日期:2024.1.25
Iron photocatalysis enables repurposing inexpensive trifluoroacetates as reagents for the C(sp2)−H trifluoromethylation. Thanks to the complementary inner-sphere electron-transfer pathway, photodecarboxylation occurs under mild conditions and can be applied to complex molecules, including natural products and pharmaceuticals.