Reaction of tetrakis(dimethylamino)ethylene with CF2Br2 in the presence of secondary amines, formation of N-trifluoromethyl-dialkylamines
作者:G. Pawelke
DOI:10.1016/s0022-1139(00)80138-4
日期:1991.4
R2NCF3 (R= Me (I),Et (II), i-Pr (III), i-Bu (IV); 2R = (CH3)2C-(CH2)3-C(CH3)2 (V) and(CH2)6 (VI) ) have been obtained from the corresponding secondaryamines R2NH with the reagent combination tetrakis(dimethylamino)ethylene/CF2Br2/(CH2)4SO2in moderate yields. The new N-trifluoromethylamineshave been characterized by elemental analyses, multi-nuclearNMR and vibrational spectra and the mechanism of formationis
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
Application of Dialkylaminosulfur Trifluorides in the Synthesis of Fluoroorganic Compounds
作者:L. N. MARKOVSKIJ、V. E. PASHINNIK、A. V. KIRSANOV
DOI:10.1055/s-1973-22302
日期:——
Applications of Dialkylaminosulfur Trifluorides for the Syntheses of Acid Fluorides
作者:L. N. MARKOVSKI、V. E. PASHINNIK
DOI:10.1055/s-1975-23936
日期:——
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.