【摘要】 <正> 全氟（3,4-二甲基-4-乙基己烯-[2]）（1）虽早已合成,但有关它的反应至今报道不多。本文报道化合物1和烯丙醇在不同条件下的亲核取代反应和2-（1′-烯丙氧基四氟乙基）-全氟（3-甲基-3-乙基戊烯-[1]）（2）的化学转化。1和烯丙醇的反应随溶剂和碱的变化而得到不同的产物。1和烯丙醇钠在FC-113中,于-40℃左右反应可得到2。若1与过量烯丙醇、三乙胺在35°～40℃反应40min,则得到2-烯丙氧基-全氟（3,4-二甲基-4-乙基已烯-[2]）（3）,但产率很低,绝大部分回收原料,并获得3-三氟甲基-3-五氟乙基-2,2-二氢五氟戊酸烯丙酯（5a）。若1与烯丙醇、碳酸钾在丙酮中于50～60℃反应,则主要产物为4和5a。以上化合物的结构均经¹HNMR,¹⁹FNMR,IR和元素分析等证明。更多还原

【Abstract】 The reaction of perfluoro-（3, 4-dimethyl-3-ethylhexene- [2]） （1） with allyl alcohol under different conditions gave different products. Compound 1 reacted with sodium allyl alcoholate yielding 2-（1’-allyloxy-tetrafluoroethyl）-perfluoro（3-methyl 3-ethylpentene-[1]） （2）. In the presence of triethylamine, 1 reacted with allyl alcohol to give 2-allyloxy-perfluoro （3, 4-dimethyl-4-ethylhexene-[2]） （3）, and in the presence of acetone and K₂CO₃ to give compound 4. These reactions all gave allyl-3-trifluoromethyl-3-pentafluoroethyl-2,2-dihydro-pentafluorovalerate （5a） as byproduct. Compound 1 reacted with allyl alcohol in the presence of triethylamine at 20～22℃ to give 2, at 30～35℃ to give a mixture of 2 and 3 and at 35～40℃ to give a mixture of 3 and 5a respectively. Compound 2 was transformed to compound 4 in acetone and in the presence of K₂CO₃, to compound 5a or 6b in the corresponding alcohol and to compound 6 on reacting with dimethylamine. Compound 2 as well as 3 was converted to perfluoro-（3 ethyl-2,3, 4,5-tetramethyl-2, 3-dihydrofuran） （7） by KF in sulpholane.更多还原