Synthesis of fluorinated halonitrobenzenes and halonitrophenols using tetrafluoroethylene and buta-1,3-dienes as starting building blocks
作者:N. V. Volchkov、M. B. Lipkind、O. M. Nefedov
DOI:10.1007/s11172-021-3327-8
日期:2021.11
The gas-phase copyrolysis of tetrafluoroethylene with buta-1,3-diene in a flow reactor at 495–505 °C produces 3,3,4,4-tetrafluorocyclohex-1-ene, which selectively converted to 1,2-difluorobenzene or 1-chloro-2,3-difluorobenzene. The latter can be converted to 2-chloro-3,4-difluoronitrobenzene, 2,3,4-trifluoronitrobenzene, 2,3-difluoro-6-nitrophenol, or 2-chloro-3-fluoro-4-nitrophenol via nitration
在 495–505 °C 的流动反应器中,四氟乙烯与丁-1,3-二烯的气相复制生成 3,3,4,4-四氟环己-1-烯,其选择性地转化为 1,2-二氟苯或1-氯-2,3-二氟苯。后者可通过硝化、氟脱氯作用转化为2-氯-3,4-二氟硝基苯、2,3,4-三氟硝基苯、2,3-二氟-6-硝基苯酚或2-氯-3-氟-4-硝基苯酚, 和水解反应。