研究了2-(五氟硫基)-和2-(三氟甲基)-1,3-苯并噻唑的硝化和卤化反应。先前未描述的单硝基取代的1,3-苯并噻唑(4-硝基-2-(五氟硫基)-1,3-苯并噻唑、4-硝基-2-(三氟甲基)-1,3-苯并噻唑和6的制备方法开发了一种合成先前已知的 6-硝基-2-(三氟甲基)-1,3-苯并噻唑的新方法。该过程涉及2-(三氟甲基)-1,3-苯并噻唑与NH 4 NO 3在TFAA中在室温下的反应。基于2-取代1,3-苯并噻唑与NBS在TFA-H中反应制备2-取代4,5,6,7-四溴-1,3-苯并噻唑的有效方法提出了室温下的2 SO 4 。
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
Copper-Catalyzed Direct C–H Oxidative Trifluoromethylation of Heteroarenes
作者:Lingling Chu、Feng-Ling Qing
DOI:10.1021/ja209992w
日期:2012.1.18
This article describes the copper-catalyzed oxidative trifluoromethylation of heteroarenes and highly electron-deficient arenes with CF(3)SiMe(3) through directC-H activation. In the presence of catalyst Cu(OAc)(2), ligand 1,10-phenanthroline and cobases tert-BuONa/NaOAc, oxidative trifluoromethylation of 1,3,4-oxadiazoles with CF(3)SiMe(3) proceeded smoothly using either air or di-tert-butyl peroxide
[EN] HETEROCYCLIC COMPOUND AND ITS USE FOR CONTROL OF AN ARTHROPOD PEST<br/>[FR] COMPOSÉ HÉTÉROCYCLIQUE ET SON UTILISATION POUR LUTTER CONTRE UN ARTHROPODE NUISIBLE
申请人:SUMITOMO CHEMICAL CO
公开号:WO2011043404A1
公开(公告)日:2011-04-14
A heterocyclic compound represented by formula (1): wherein A1, A2, R1, R2, R3, R4, n and so on are defined in that description, has an excellent control effect on arthropod pests and is useful for control of arthropod pests.
Copper-Promoted Cycloaddition of α-Methylenyl Isocyanides with Benzothiazoles: Tunable Access to Benzo[<i>d</i>]imidazothiazoles
作者:Jian Wang、Jing Li、Qiang Zhu
DOI:10.1021/acs.orglett.5b02694
日期:2015.11.6
benzothiazoles. When the C2 position of benzothiazole is linked to a C–H or C–C bond, benzo[d]imidazo[2,1-b]thiazoles are obtained through a novel rearrangement via C–S bond cleavage and formation of a new C–S bond. When 2-chloro- or 2-bromobenzothiazoles are used under the same reaction conditions, the isomeric benzo[d]imidazo[5,1-b]thiazoles are formed selectively. These reactions proceed smoothly in moderate
通过α-亚甲基异氰化物与苯并噻唑的铜促进的环加成反应,已开发出可调谐途径生成苯并[ d ]咪唑并噻唑的两种异构体。当苯并噻唑的C2位置与C–H或C–C键相连时,通过C–S键的裂解和新C的形成,通过新颖的重排可以获得苯并[ d ]咪唑基[2,1- b ]噻唑–S键。当在相同反应条件下使用2-氯-或2-溴苯并噻唑时,选择性地形成异构体苯并[ d ]咪唑并[5,1- b ]噻唑。这些反应在室温下以中等至极好的收率顺利进行,并且可以容忍各种官能团。
One-Pot Sandmeyer Trifluoromethylation and Trifluoromethylthiolation
作者:Bilguun Bayarmagnai、Christian Matheis、Eugen Risto、Lukas J. Goossen
DOI:10.1002/adsc.201400340
日期:2014.7.7
trifluoromethylthiolations. Starting from broadly available (hetero)aromatic amines, various benzotrifluorides were synthesized in high yields via in situ diazotization and copper‐mediated trifluoromethylation using the inexpensive Ruppert–Prakash trifluoromethylating reagent. In the presence of sodium thiocyanate as a sulfur source, aryl trifluoromethyl thioethers are exclusively formed.