A compound having at least one perfluorovinyl group and at least one functional group is suitable for reacting with and/or forming polymers. The compound is preferably of Formula I: (G)n-R-(X--CF.dbd.CF.sub.2).sub.m wherein R represents an optionally substituted hydrocarbyl group, X represents any group which links R and a perfluorovinyl group; n is the number of G groups, m is the number of (XCF.dbd.CF.sub.2) groups; and G represents any reactive functional group or a group convertible into a reactive functional groups. A process for preparing a compound of Formula I comprises the steps of: (a) preparing a 2-halotetrafluoro compound of the Formula III: (Q--CF.sub.2 --CF.sub.2 -X).sub.m -R-(G").sub.n wherein R, X, m and n are as described for Formula I and Q is bromine, chlorine or iodine; and G" is a functional group, or a functional group suitable for conversion into G; (b) chemically modifying group G" to produce functional group G; and (c) dehalogenating the 2-halotetrafluoro compound to form the corresponding trifluorovinyl compound.
至少具有一个
全氟乙烯基团和至少一个功能基团的化合物适合用于与聚合物反应和/或形成聚合物。该化合物优选为公式I:(G)n-R-(X--CF.dbd.CF.sub.2).sub.m,其中R代表可选地取代的烃基,X代表任何将R和
全氟乙烯基团连接的基团;n是G基团的数量,m是(XCF.dbd.CF.sub.2)基团的数量;而G代表任何反应性功能基团或可转化为反应性功能基团的基团。制备公式I化合物的过程包括以下步骤:(a)制备公式III的2-卤代四
氟化合物:(Q--CF.sub.2 --CF.sub.2 -X).sub.m -R-(G").sub.n,其中R、X、m和n如公式I所述,而Q为
溴、
氯或
碘;G"为功能基团,或适用于转化为G的功能基团;(b)
化学修饰基团G"以产生功能基团G;(c)去卤代2-卤代四
氟化合物以形成相应的
三氟乙烯化合物。