copper(I) trifluoromethylselenolate reagents by the reaction of CuI with the Ruppert’s reagent (Me3SiCF3), KF, and elemental selenium in the presence of dinitrogen ligands in CH3CN at room temperature. The reagent [Cu(bpy)(SeCF3)]2 was proven to be air‐stable and highly efficient for nucleophilic trifluoromethylthselenolation of a broad range of (hetero)aryl halides and alkyl halides. This method represents
Copper catalyzed oxidative coupling reactions for trifluoromethylselenolations – synthesis of R-SeCF<sub>3</sub>compounds using air stable tetramethylammonium trifluoromethylselenate
作者:Quentin Lefebvre、Roman Pluta、Magnus Rueping
DOI:10.1039/c4cc10212f
日期:——
The aerobic, room-temperature coupling of tetramethylammonium trifluoromethylselenate with readily available boronic acids, boronic esters, and terminal alkynes has been developed.
Copper-Catalyzed Trifluoromethylselenolation of Aryl and Alkyl Halides: The Silver Effect in Transmetalation
作者:Chaohuang Chen、Chuanqi Hou、Yuguang Wang、T. S. Andy Hor、Zhiqiang Weng
DOI:10.1021/ol403406y
日期:2014.1.17
A catalytic trifluoromethylselenolation of aryl and alkylhalides by a Cu(I) catalyst has been developed. A key intermediate, [(phen)Cu(SeCF3)]2 (5) was successfully isolated and characterized by X-ray diffraction. The important role of silver in the transmetalation process during the catalytic cycle was elucidated. A wide range of trifluoromethylselanes have been prepared from readily available starting
olated arenes under metal‐free conditions is reported. The use of an organic photocatalyst enables the trifluoromethylselenolation of arene diazoniumsalts using the shelf‐stable reagent trifluoromethyl tolueneselenosulfonate at room temperature. The reaction does not require the presence of any additives and shows high functional‐group tolerance, covering a very broad range of starting materials.
of catalysis at dinuclear PdI sites, we herein report the application of this concept to the realization of the first catalytic method to convert aryliodides into the corresponding ArSeCF3 compounds. HighlyefficientCSeCF3 coupling of a range of aryliodides was achieved, enabled by an air‐, moisture‐, and thermally stable dinuclear PdI catalyst. The novel SeCF3‐bridged dinuclear PdI complex 3 was