Synthèse de télomères fluorés. Partie IL Télomérisation du trifluoroéthylène avec des iodures de perfluoroalkyle
                                
                                    
                                        作者:J. Balagué、B. Améduri、B. Boutevin、G. Caporiccio                                    
                                    
                                        DOI:10.1016/0022-1139(95)03280-q
                                    
                                    
                                        日期:1995.8
                                    
                                    The synthesis of highly fluorinated telomers by thermal telomerization of trifluoroethylene with branched (i-C3F7I, C5F11CFICF3) or linear (C4F9I, C4F9CH2CF2I) fluoroalkyl iodides is presented. All these telomerizations led to the first three telomeric adducts with high R(F)I conversion. Interestingly, the monoadduct was composed of two isomers R(F)CF(2)CFHI (1) and R(F)CFHCF(2)I (2), the ratio of which depends upon the electrophilicity of the radical R(F.). The more electrophilic this radical, the higher the amount of isomer 2, according to a mechanism that responds to both the polar and the mesomeric effects for growing radicals.