5272-26-4Relevant academic research and scientific papers
Activation of pentafluorophenylsilanes by Weak Lewis bases in reaction with iminium cations
Dilman, Alexander D.,Levin, Vitalij V.,Karni, Miriam,Apeloig, Yitzhak
, p. 7214 - 7223 (2007/10/03)
The Lewis base mediated carbon-carbon bond forming reactions between pentafluorophenylsilanes and iminium cations were studied theoretically and experimentally. The complexation of silanes with anionic Lewis bases was analyzed computationally using DFT me
(Fluoroorgano)fluoroboranes and -fluoroborates I: Synthesis and spectroscopic characterization of potassium fluoroaryltrifluoroborates and fluoroaryldifluoroboranes
Frohn,Franke,Fritzen,Bardin
, p. 127 - 135 (2007/10/03)
A convenient preparation of K[ArBF3] (Ar=2-C6H4F, 3-C6H4F, 4-C6H4F, 2,6-C6H3F2, 3,5-C6H3F2, 2,4,6-C6H2F3, 3,4,5-C6H2F3, 2,3,4,5-C6HF4 and C6F5) is offered and the IR and multinuclear NMR spectra of these salts are reported. Treatment of the trifluoroborate salts with BF3 in chlorocarbon solvents provides an easy synthetic route to the corresponding aryldifluoroboranes ArBF2. The multinuclear NMR spectra of ArBF2 are presented. The electron substituent effect of the [-BF3]--group shows this substituent as one of the strongest σ-electron donors, while its π-electron influence is negligible (σI=-0.32, σR=-0.07).
A convenient preparation of pentafluorophenyl( fluoro) silanes: Reactivity of pentafluorophenyltrifluorosilane
Frohn,Giesen,Klose,Lewin,Bardin
, p. 155 - 164 (2007/10/02)
Pentafluorophenyl(fluoro)silanes (C6F5)nSiF4-n (n = 1, 2) were prepared from the corresponding ethoxysilanes by sequential chlorodeethoxylation with SOCl2 and fluoridation of chlorosilanes with SbF3. The conversion of C6F5Si(OEt)3 and C6F5SiCl3 into C6F5SiF3 with anhydrous HF was described. Some reactions of C6F5SiF3 with electrophiles and nucleophiles were studied.
Preparation, NMR spectra and reactivity of pentafluorophenyltetrafluorosilicates M+-
Frohn, H. J.,Bardin, V. V.
, p. 155 - 160 (2007/10/02)
Pentafluorophenyltetrafluorosilicates M+ - were obtained from pentafluorophenyltrifluorosilane C6F5SiF3 and ionic fluorides MF (M=K, Cs, Me4N) in anhydrous MeCN or diglyme.The reactivity of M+ - toward electrophiles was studied.Keywords: Pentafluorophenyl; Fluorosilicate anion; Desilylation
Fluorination of C6F5MX3 compounds (M=Si, Ge; X=F,Cl, Br, Alk) with xenon difluoride and XeF+ Y- salts
Bardin, V. V.,Frohn, H.J.
, p. 141 - 151 (2007/10/02)
Compounds of the formula C6F5MX3 (M=Si, Ge; X=Cl, Br) react with XeF2, exchanging chlorine (bromine) atoms for fluorine.Interaction of C6F5MX3 (X=F,Alk) with XeF2 in the presence of BF3*OEt2 or with XeF+ NbF6- proceeds by the additio
