677-41-8Relevant academic research and scientific papers
The effect of fluorination in trimethylamine: gas-phase structures of CF3N(CH3)2 and (CF3)2NCH3
Jin, Anding,Zhu, Xiao-Lei,Kirchmeier, Robert L.,Shreeve, Jean'ne M.,Patel, Nimesh R.,Oberhammer, Heinz
, p. 129 - 134 (1994)
The molecular structures of CF3N(CH3)2 and (CF3)2NCH3 have been determined by gas electron diffraction.The following skeletal parameters (ra distances and H=148.1(10) pm, N-CF=138.3(16) pm, CHNCH=113.0(27) o, CHNCF=111.9(9) o; (CF3)2NCH3:C-F=133.3(3) pm, N-CH=147.8(13) pm, N-CF=142.0(8) pm, CHNCF=116.8(13) o, CFNCF=117.8(11) o.CH and CF are the methyl and trifluoromethyl carbon atoms, respectively.Experimental uncertainties are 3? values and include possible systematic errors.The most surprising result is the large difference between the N-CH and N-CF bond lengths of about 10 and 6 pm in these compounds.All nitrogen bond angles increase concomitantly with increasing number of CF3 groups.An attempt is made to rationalize the observed structural trends.
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
Tyrra, Wieland
, p. 189 - 194 (2007/10/03)
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, thiocarbamoyl fluorides and silver dithiocarbamates react with AgF yielding selectively the corresponding trifluoromethylamines.
REACTION OF TETRAKIS(DIMETHYLAMINO)ETHYLENE WITH CF2Br2 IN THE PRESENCE OF SECONDARY AMINES, FORMATION OF N-TRIFLUOROMETHYL-DIALKYLAMINES
Pawelke, G.
, p. 229 - 234 (2007/10/02)
N-trifluoromethylamines of the general formula 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 secondary amines R2NH with the reagent combination tetrakis(dimethylamino)ethylene/CF2Br2/(CH2)4SO2 in moderate yields.The new N-trifluoromethylamines have been characterized by elemental analyses, multinuclear NMR and vibrational spectra and the mechanism of formation is discussed.
REACTIONS OF TERTIARY FORMAMIDES WITH SULPHUR TETRAFLUORIDE. DIRECT SYNTHESIS OF (TRIFLUOROMETHYL)AMINES
Dmowski, Wojciech,Kaminski, Maciej
, p. 207 - 218 (2007/10/02)
Treatment of dimethylformamide 1a, diethylformamide 1b, 1-formylpiperidine 3a, 4-formylmorpholine 3b, and ethyl-phenylformamide 5 with sulphur tetrafluoride in the presence of potassium fluoride resulted in a direct conversion of the formyl group to the t
QUATERNARY AMMONIUM SALTS WITH PERFLUOROALKYL GROUPS AT THE NITROGEN ATOM
Yagupol'skii, L. M.,Kondratenko, N. V.,Timofeeva, G. N.,Dronkina, M. I.,Yagupol'skii, Yu. L.
, p. 2139 - 2143 (2007/10/02)
Quaternary salts of aliphatic, aromatic, and heterocyclic amines with perfluoroalkyl groups at the nitrogen atom were obtained for the first time.A method is proposed for the synthesis of N,N,N',N'-tetraalkylperfluoroalkylenediamines.Diquaternary ammonium
