Thermal Transformations of
2,5-Difluoro-3,4,6-trichlorobenzenethiol with Tetrafluoroethylene
作者:P. V. Nikul’shin、A. M. Maksimov、V. E. Platonov
DOI:10.1134/s107036322011002x
日期:2020.11
Pyrolysis of a mixture of 2,5-difluoro-3,4,6-trichlorobenzenethiol with tetrafluoroethylene leads to 2,2,3,3,4,7-hexafluoro-5,6-dichloro-2,3-dihydrobenzo[b]thiophene (the major reaction product) along with 2,2,3,3,4,6-hexafluoro-5,7-dichloro-2,3-dihydrobenzo[b]thiophene. Schemes of their formation with the participation of intermediate radicals are proposed. Oxidation of a mixture of the synthesized
2,5-二氟-3,4,6-三氯苯硫醇与四氟乙烯的混合物热解生成 2,2,3,3,4,7-六氟-5,6-二氯-2,3-二氢苯并[b]噻吩(主要反应产物)和 2,2,3,3,4,6-hexafluoro-5,7-dichloro-2,3-dihydrobenzo[b]thiophene。提出了它们在中间自由基参与下的形成方案。将合成化合物的混合物氧化得到 2,2,3,3,4,7-hexafluoro-5,6-dichloro-2,3-dihydrobenzo[b]sulfane-1,1-dioxide 和 2,2,3 ,3,4,6-hexafluoro-5,7-dichloro-2,3-dihydrobenzo[b]sulfane-1,1-dioxide。