38727-32-1Relevant academic research and scientific papers
Equilibria between molecular and ionic complexes with an NH...N hydrogen bond. Fluorinated aromatic amine as a proton donor
Kastan'eda,Denisov,Shraiber
, p. 608 - 613 (2001)
Ultraviolet absorption spectra in the range 300-200 K were used to study the composition and structure of complexes formed in solutions by the fluorinated amine (4-CF3C6F4)2NH as a proton donor with dibutylamine. A program is developed for quantitative analysis of sets of the spectra of equilibrium multicomponent systems, that allow to find spectral and thermodynamic characteristics of the individual components. In the systems in study, 1 : 1 and 1 : 2 fluorinated diamine-dibutylamine complexes are formed. The first of them in a molecular complex with an NH...N hydrogen bond, and the second is an ionic proton-transfer complex. The equilibrium constants between the complexes and the free molecules are found, the enthalpies and entropies of formation of both complexes are found, and the spectra of the complexes are measured.
Synthesis of vinylsulfanyl-substitued polyfluorobenzenes from perfluorotoluene
Amosova,Gavrilova,Afonin
, p. 402 - 405 (2005)
The reaction of octafluorotoluene in DMF with vinylthiolate ion generated from divinyl sulfide by the action of sodium in liquid ammonia afforded 2,3,5,6-tetrafluoro-4-trifluoromethylaniline, 3,6-difluoro-4-trifluoromethyl-1, 2,5-tris(vinylsulfanyl)benzen
Palladium-catalyzed arylation of ureas
Artamkina,Sergeev,Beletskaya
, p. 538 - 545 (2007/10/03)
Urea arylation with aryl halides in the presence of catalyst precursor Pd2dba3-CHCl3/Xantphos and Cs 2CO3 in dioxane at 100°C affords symmetrical N,N′-diarylureas in 64-92% yield. With the same cataly
Reactions of polyfluoroarenes with hexamethyldisilazane and with 1,1,1-trimethyl-N,N-bis(trimethylsilyl)stannaneamine in the presence of caesium fluoride
Miller, Alexey O.,Furin, Georgii G.
, p. 169 - 172 (2007/10/03)
Hexamethyldisilazane and 1,1,1-trimethyl-N,N-bis(trimethylsilyl)stannaneamine aminate pentafluoropyridine, octafluorotoluene, pentafluorobenzonitrile, pentafluoronitrobenzene and pentafluorobenzene sulphonyl fluoride in the presence of caesium fluoride with formation of the corresponding perfluorinated aryl amines (ArNH2), diarylamines (Ar2NH) and triarylamines (Ar3N) (where the amine functions are in positions 4 relative to the arene substituent). - Keywords: Polyfluoroarenes; Hexamethyldisilazane; Caesium fluoride; Silylated amines
