Isolation of OH-bridged Ag(<scp>i</scp>)/Cu(<scp>iii</scp>) and ion-pair Cu(<scp>i</scp>)/Cu(<scp>iii</scp>) trifluoromethyl complexes with monophosphines
作者:Chang Xiao、Song-Lin Zhang
DOI:10.1039/c8dt03876g
日期:——
complex 3 exhibits a novel OH-bridged Ag(I)–Cu(III) dinuclear structure with XPhos-coordinated linear Ag(I) and square planar Cu(III) components. This is the first heterobimetallic Cu(III)–CF3 complex confirmed by both solution-phase NMR spectroscopy and solid state X-ray crystal structure analysis. Complex 3 is found to have the LUMO orbital of major σ*(Cu–CF3) nature and electrophilic CF3 ligands. Accordingly
Cathodic C–H Trifluoromethylation of Arenes and Heteroarenes Enabled by an in Situ-Generated Triflyltriethylammonium Complex
作者:Wolfgang Jud、Snjezana Maljuric、C. Oliver Kappe、David Cantillo
DOI:10.1021/acs.orglett.9b02948
日期:2019.10.4
While several trifluoromethylation reactions involving the electrochemical generation of CF3 radicals via anodic oxidation have been reported, the alternative cathodic, reductive radical generation has remained elusive. Herein, the first cathodic trifluoromethylation of arenes and heteroarenes is reported. The method is based on the electrochemical reduction of an unstable triflyltriethylammonium complex
Fluoroform-Derived CuCF<sub>3</sub>for Low-Cost, Simple, Efficient, and Safe Trifluoromethylation of Aryl Boronic Acids in Air
作者:Petr Novák、Anton Lishchynskyi、Vladimir V. Grushin
DOI:10.1002/anie.201201613
日期:2012.7.27
Easy does it: Arylboronicacids undergo smooth and selective trifluoromethylation with low‐cost fluoroform‐derived CuCF3 in DMF in non‐dried air. The reaction occurs under mild conditions (1 atm, room temperature), exhibits unprecedented functional‐group tolerance, and affords trifluoromethylated aromatic compounds in up to 99 % yield.
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。
Highly Selective Trifluoromethylation of 1,3-Disubstituted Arenes through Iridium-Catalyzed Arene Borylation
作者:Tianfei Liu、Xinxin Shao、Yaming Wu、Qilong Shen
DOI:10.1002/anie.201106673
日期:2012.1.9
The old one two: A sequential iridium‐catalyzedborylation and copper‐catalyzed trifluoromethylation of arenes is described (see scheme; Pin=pinacol). The reaction is conducted under mild reaction conditions and tolerates a variety of functional groups. The advantages of this tandem procedure are demonstrated by the late‐stage trifluoromethylation of a number of biologically active molecules.