A comparative study of the electrochemical fluorination (ECF) of 1 ,n-alkanebis (sulfonylfluorides) (n = 1–3)
摘要:
Synthetic methods for the preparation of alpha,omega-alkanebis(sulfonylfluorides) and their electrochemical fluorination (ECF) are described in detail. Factors affecting the yield of the perfluoro-alpha,omega-alkanebis(sulfonylfluorides) are also discussed. Spectral data (C-13 and F-19 NMR and mass spectra) and other hitherto unknown physical properties of difluoromethanebis(sulfonylfluoride) (1), 1,1,2,2-tetrafluoroethane-1,2-bis(sulfonylfluoride) (2) and 1,1,2,2,3,3-hexafluoropropane-1,3-bis(sulfonylfluoride) (3) are measured and compared. (C) Elsevier Science S.A.
The synthesis of 1,2-ethane-bis-sulfonyl fluoride is described. H-1 and F-19 NMR spectra are analysed and iterated. Novel NMR programs are commented upon. 1,2-Ethane-bis-sulfonyl fluoride favours a trans conformation.