Reaction of Thiocarbonyl Fluoride Generated from Difluorocarbene with Amines
作者:Jiao Yu、Jin-Hong Lin、Ji-Chang Xiao
DOI:10.1002/anie.201710186
日期:2017.12.22
The reaction of thiocarbonyl fluoride, generated from difluorocarbene, with various amines under mild conditions is described. Secondary amines, primary amines, and o‐phenylenediamines are converted to thiocarbamoyl fluorides, isothiocyanates, and difluoromethylthiolated heterocycles, respectively. Thiocarbamoyl fluorides were further transformed into trifluoromethylated amines by using a one‐pot process
CF<sub>3</sub> Oxonium Salts, <i>O</i>-(Trifluoromethyl)dibenzofuranium Salts: In Situ Synthesis, Properties, and Application as a Real CF<sub>3</sub><sup>+</sup> Species Reagent
作者:Teruo Umemoto、Kenji Adachi、Sumi Ishihara
DOI:10.1021/jo070896r
日期:2007.8.31
We report in situ synthesis of the first CF3 oxonium salts, thermally unstable O-(trifluoromethyl)dibenzofuranium salts, which furthermore have different counteranions (BF4-, PF6-, SbF6-, and Sb2F11-) and ring substituents (tert-butyl, F, and OCH3), by photochemical decomposition of the corresponding 2-(trifluoromethoxy)biphenylyl-2‘-diazonium salts at −90 to −100 °C. The yields markedly increased in
One-pot synthesis of trifluoromethyl amines and perfluoroalkyl amines with CF<sub>3</sub>SO<sub>2</sub>Na and R<sub>f</sub>SO<sub>2</sub>Na
作者:Shuaishuai Liang、Jingjing Wei、Lvqi Jiang、Jie Liu、Yasir Mumtaz、Wenbin Yi
DOI:10.1039/c9cc03282g
日期:——
A newly developed CF3SO2Na-based trifluoromethylation of secondary amines has been disclosed, and the method has been successfully extended to the configuration of perfluoroalkyl amines using RfSO2Na, complementing the established synthesis strategy of trifluoromethyl amines. Advantages of the method include good functional group tolerance, mild conditions, and inexpensive or easy-to-handle materials
已经公开了新开发的基于仲胺的基于CF 3 SO 2 Na的三氟甲基化,并且该方法已经成功地扩展到使用R f SO 2 Na的全氟烷基胺的构型,补充了已建立的三氟甲基胺的合成策略。该方法的优点包括良好的官能团耐受性,温和的条件以及廉价或易于处理的材料。机理探针表明,原位形成的硫代羰基氟化物是反应中的关键中间体。
Die Desulfonierung–Fluorierung von Thiuramdisulfiden, [R2NC(S)S]2 und Silberdithiocarbamaten, Ag[SC(S)NR2] (R = CH3, CH3CH2, C6H5CH2), mit Silber(I)fluorid, AgF — ein einfacher Zugang zu Diorgano(trifluormethyl)aminen, R2NCF3, und Thiocarbamoylfluoriden, R2NC(S)F
作者:Wieland Tyrra
DOI:10.1016/s0022-1139(01)00391-8
日期:2001.7
AgF and [R2NC(S)S](2) (R = CH3, CH3CH2, C6H5CH2), selectively react at room temperature in the stoichiometric ratio of 1:1 to give the corresponding N,N-diorganothiocarbamoyl fluorides, R2NC(S)F, AgSC(S)NR2 and elemental sulfur. Under comparable conditions in a ratio >3:1 both reactants selectively yield diorgano(trifluoromethyl)amines, R2NCF3, AgSC(S)NR2, Ag2S and elemental sulfur. At stoichiometry 6.1, R2NCF3, Ag2S besides elemental sulfur are formed. By analogy, thiocarbarnoyl fluorides and silver dithiocarbamates react with AEF yielding selectively the corresponding trifluoromethylamines. (C) 2001 Elsevier Science B.V. All rights reserved.