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含有亚硫酸四氟乙二醇酯(1)的四氟乙烷磺内酯(2)与H(CF_2)_4CH_2OH和三乙胺反应可获得草酸酯(CO_2CH_2CF_2CF_2—CF_2CF_2H)_2(3)。化合物(3)生成的机理解释为由于1的破环,生成了SOF_2和(COF)_2,后者进一步与H(CF_2)_4CH_2OH反应生成3。 3与二乙胺反应生成Et_2NCOCO_2CH_2(CF_2)_4H(4)。3和4皆为新化合物。
Oxalic ester (CO_2CH_2CF_2CF_2-CF_2CF_2H) _2 (3) was obtained by reaction of tetrafluoroethane sultone (2) with tetrafluoroethylene sulfite (1) with H (CF_2) _4CH_2OH and triethylamine. The mechanism of the formation of compound (3) is explained by the formation of SOF_2 and (COF) _2 due to the broken ring of 1, which is further reacted with H (CF_2) _4CH_2OH to form 3. 3 with diethylamine to form Et_2NCOCO_2CH_2 (CF_2) _4H (4). 3 and 4 are new compounds.