Nickel-Catalyzed Trifluoromethylselenolation of Aryl Halides Using the Readily Available [Me<sub>4</sub>N][SeCF<sub>3</sub>] Salt
作者:Jia-Bin Han、Tao Dong、David A. Vicic、Cheng-Pan Zhang
DOI:10.1021/acs.orglett.7b01839
日期:2017.7.21
efficient method for the construction of aryl trifluoromethylselenoethersfrom the corresponding aryl halides in the presence of Ni(COD)2 and an appropriate ligand is reported. Various aryl iodides, bromides, and chlorides were smoothly converted in this reaction by simply varying the ligand, which afforded aryl and heteroaryl trifluoromethylselenoethers in good to almost quantitative yields. The reaction
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
Electrophilic Trifluoromethyl- and Fluoroalkylselenolation of Organometallic Reagents
作者:Quentin Glenadel、Ermal Ismalaj、Thierry Billard
DOI:10.1002/ejoc.201601526
日期:2017.1.18
Fluoroalkylseleno groups are emerging groups that still suffer from a lack of efficient methods for introduction onto organic molecules. Herein, we describe an efficient method to perform reactions between in situ formed fluoroalkaneselenyl chlorides and organometallic reagents. With this strategy, various fluoroalkylselenolated molecules were easily obtained. Furthermore, the Hansch parameter of the