Collection of Czechoslovak Chemical Communications - digital archive 

Abstract

Coupling reactions of chlorofluoro- and perfluoroalkyl iodides R_f-I with R_f = ClCF₂CFCl(CF₂)₃CF₂-, ClCF₂CFClO(CF₂)₃CF₂-, ClCF₂CFCl-, (CF₃)₂CF- , (CF₃)₂CFCF₂CF₂- in the presence of a zinc/solvent system give dimers in good yields. Both homodimerizations (one iodide) and heterodimerizations (two different iodides) have been studied. The effect of temperature and solvent is shown. The zinc mediated dechlorination of vicinal chlorine atoms in the dimers afforded terminal alkenes and dienes.

Keywords: Dimerization; Chlorofluoroalkyl iodides; Perfluoroalkyl iodides; Dehalogenation; Perfluorodiene.

References: 24 live references.