The gas-phase copyrolysis of tetrafluoroethylene and buta-1,3-diene in a flow tube reactor at 490–510 °C gives 3,3,4,4-tetrafluorocyclohex-1-ene, which is selectively converted to 1-bromo- or 1-chloro-2,3-difluorobenzene via intermediate steps of halogenation and dehydrohalogenation.
四氟乙烯和丁-1,3-二烯在流管反应器中在490-510°C下气相共解得到3,
3,4,4-四
氟环己-1-烯,它被选择性地转化为1-
溴-或 1-
氯-2,3-二
氟苯通过中间卤化和脱卤化氢步骤。