19F NMR analysis of the fluorides of perfluorocyclohexane-sulphonic acid and of 3-trifluoromethylperfluorocyclopentane-1-sulphonic acid

✍ Scribed by Giorgio Gurato; Luciano Cavalli; G. Giorgio Troilo

• Publisher: John Wiley and Sons
• Year: 1975
• Tongue: English
• Weight: 592 KB
• Volume: 7
• Category: Article
• ISSN: 0749-1581
• DOI: 10.1002/mrc.1270071103

✦ Synopsis

From the electrochemical fluorination of the chloride and the fluoride of benzenesulphonic acid, in addition to the main product C,F,,SO,F, the side products C,F,(CF,)SO,F, a structural isomer of the main product and C,;F,,CI-SO,F are also obtained.

The NMR analysis of these products was performed. Chemical shift and couplinl: constant values were obtained for all the com-2a and 26-, the fluoride of chloroperHuorocyclohexanesulphonic acid, C,F,,CI-SO,F (31, was also observed. For Only the -so2Fchemica1 shift be determined* EXPERIMENTAL pounds. The-NMR parameters of the main product are compared with those of perfluoromethylcyciohexane according to the data of Jolley, Sutcliffe and Walker. From the NMR parameters of C,F,(CF,)SO,F it was possible to demonstrate that substitution on the l i n g for -SO,F and CF,-IS of the 1,3 and not the J,2 type.