Telomerisation du fluorure de vinylidene avec CCl4 et CCl3-R

The addition of (CF3SO2)2CHBr to vinylidene fluoride

“…Gutowsky and Belford [7] found such long-range coupling with six intervening bonds in the compound (CF 3 ) 2 NCF 2 CFBrCF 3 and attributed the coupling observed between the propyl-CF 3 and the amine-CF 3 groups to a close spatial approach between the two centers. The chemical shifts and splittings of our telomers are correspondingly in close agreement with those found for CCl 3 CH 2 CF 2 Cl and CCl 3 CH 2 CF 2 CH 2 CF 2 Cl [8] and for CCl 3 CH 2 CF 2 Br [9].…”

Characterization of the telomerization reaction path for vinylidene fluoride with ĊCl3radicals

“…The radical telomerization of VDF with Cl 3 C-Z chain transfer agents, where Z stands for H, Cl or Br, was widely experimentally studied. 4,[10][11][12][13][14][15] To our knowledge, no computational data have been reported in the literature to confirm the reaction pathway. The radical telomerization of VDF with different chain transfer agents Cl 3 C-Z (Z ¼ H, Cl, Br) was thus computationally studied.…”

Fluorinated cotelomers based on vinylidene fluoride (VDF) and hexafluoropropene (HFP): Synthesis, dehydrofluorination and grafting by amine containing an aromatic ring

“…The telomerization of vinylidene fluoride has been extensively investigated [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19]. Perfluoroalkyl iodides or a,v-diiodoperfluoroalkanes act as efficient chain transfer agents (CTA), since they easily undergo CF 2 -I bond cleavage [5,6,9,11,12,14,15,[20][21][22] leading to low molecular weight molecules.…”