D. Boulahia, Abdellatif Manseri, B. Améduri
Apr 5, 1999
Citations
0
Influential Citations
18
Citations
Journal
Journal of Fluorine Chemistry
Abstract
Abstract The synthesis of highly fluorinated telomers produced from the thermal bulk telomerization of hexafluoropropene (HFP) with α,ω-diiodoperfluoroalkanes is described. That involving 1,2-diiodotetrafluoroethane was unsuccessful because of the thermal decomposition of this diiodide from 190°C. An optimization of the telomerization reaction involving 1,4-diiodoperfluorobutane taking into account key parameters such as the initial [IC 4 F 8 I] 0 /[HFP] 0 molar ratio, the temperature and the time of the reaction is attempted. The conditions for the highest conversion of IC 4 F 8 I and also for directing the reaction toward the monoadduct or the diadduct are discussed. Both these telomers were reduced with tributylstannane into HC 4 F 8 (C 3 F 6 ) x H (with x =1 or 2) and H–C 3 F 6 –C 4 F 8 –C 3 F 6 –H, the 1 H and 19 F-NMR spectra of which confirmed the structure of each derivative.