[2.2]对环番([2.2]paracyclophane)*及其衍生物具有特殊的分子结构和化学物理性能,在理论和实际应用上都受到极大的重视[1][2]。据报导[3],二氟[2.2]对环番在减压下裂解生成的聚合物薄膜作为高能氧化剂的包复层,是同类化合物中性能较好的一种。关于二氟[2.2]对环番的合成方法,未见文献报导。我们采用铂催化2—氟代对二甲苯热裂解法合成二氟[2.2]对环番,产率15%。其反应式如下: [2.2] has special molecular structure and chemical and physical properties for epichlorohydrin ([2.2] paracyclophane) * and its derivatives, and has received great attention both in theory and in practice [1] [2]. It has been reported [3] that difluoro [2.2] is one of the best compounds of the same kind in the similar compound because it is used as the cladding layer of high-energy oxidant for the polymer film formed by the ring cracking under reduced pressure. On the difluoro [2.2] ring on the synthesis method, no literature. We use platinum-catalyzed 2-fluoro-p-xylene pyrolytic synthesis of difluoro [2.2] on the ring Fan, the yield of 15%. The reaction is as follows: