【摘要】 <正> 本文报道全氟4-甲基-3,6-二氧杂-Δ~7-辛基亚磺酸钠(1)的制备及其反应,并应用于合成标题化合物。全氟4-甲基-3,6-二氧杂-Δ~7-辛基磺酰氟(2)在亚硫酸钠水溶液中回流加热即可转变成1,但反应较慢且不完全,如用等体积水和乙腈的混合溶剂,则反应可在6—8小时内完成。更多还原

【Abstract】 A useful fluoromonomer methyl perfluoro-5-methyl-4, 7-dioxa-△⁷-nonanoate wassynthesized by the following route. In H₂O-CH₃CN perfluoro-3, 6-dioxa-△⁷-octylsulfonyl fluoride was reduced with Na₂SO₃ to give sodium perfluoro-4-methyl-3,6-dioxa-△⁷-octyl sulfinate, which was converted into 8-iodo-perfluoro-5-methyl-3, 6-dioxaoctene-1 by reaction with iodine and KI in water. The carboxylatodeoidination of8-iodo-perfluoro-5-methyl-3, 6-dioxaoctene-l with Zn powder and CO₂ in DMFfollowed by esterification of the acid with methanol and sulfuric acid give the titleproduct. It was demonstrated, that FO₂SCF₂CF₂OCF₂CF₂I and FO₂SCF₂CF₂0（CF₂）₄I canbe carboxylatodeiodinated under the same conditions as 8-iodo-perfluoro-5-methyl-3,6-dioxaoctene-1.更多还原