Perfluoroalkyl derivatives of sulphur. Part VIII. Synthesis and reactions of perfluoroethylenesulphonyl fluoride
作者:R. E. Banks、G. M. Haslam、R. N. Haszeldine、A. Peppin
DOI:10.1039/j39660001171
日期:——
hydrogen fluoride at 60° to yield 1,2,2,2-tetrafluoroethanesulphonyl fluoride. The last product is also obtained by treatment of perfluoroethylenesulphonyl fluoride with anhydrous potassium fluoride in formamide at 35°. Thus the olefin is polarised in the sense [graphics omitted]·SO2F. The compounds CF2Br·CHF·SO2F, CF2Br·CFBr·SO2F, and CF2Cl·CFCl·SOF are obtained in high yield by free-radical hydrobromination
由三氟氯乙烯或全氟丙烯分六步和三步制得的全氟乙烯磺酰氟,与氢氧化钠水溶液反应,得到全氟乙烯磺酸钠,与甲醇在0°下反应,得到1,2,2-三氟-2-甲氧基乙烷磺酰氟,与二乙胺在- 30°提供2-二乙基氨基-1,2,2-三氟乙烷磺酰氟,并在60°提供无水氟化氢,得到1,2,2,2-四氟乙烷磺酰氟。最后的产品也可以通过在35°F下用无水氟化钾在甲酰胺中处理全氟乙烯磺酰氟来获得。因此,烯烃在[省略图示]·SO 2 F的意义上被极化。化合物CF 2 Br·CHF·SO 2 F,CF 2 Br·CFBr·SO通过全氟亚乙基磺酰氟的自由基氢溴化,溴化和氯化分别以高收率获得2 F和CF 2 Cl·CFCl·SOF。全氟乙烯磺酰氟与三氟亚硝基甲烷的反应产生1:1的交替共聚物。