2,2-Dihydroperfluoropentane (HFC 4310 mf) synthesis from HFP dimer
摘要:
The thermodynamic dimer of hexafluoropropene (HFP) may be used for the one pot synthesis of 2H-perfluoro-2-pentene, which is the starting compound for preparation of 2,2-dihydroperfluoropentane (HFC 4310 mf). (C) 2003 Elsevier B.V. All rights reserved.
Polyhalogenoallenes. Part V. Perfluoropenta-1,2-diene
作者:R. E. Banks、A. Braithwaite、R. N. Haszeldine、D. R. Taylor
DOI:10.1039/j39680002593
日期:——
Perfluoropenta-1,2-diene can be obtained by vigorous dehydrohalogenation with alkali-metal hydroxides of 2H,2H-3-chloro-octafluoro-1-iodopentane, 2H-3-chloro-octafluoropent-1-ene, or 2H,2H-nonafluoro-1-iodopentane. The second precursor is prepared by mild basic dehydroiodination of the first, which is synthesised from 1,1-difluoroethylene and 1-chlorohexafluoro-1-iodopropane, obtained, together with
全氟戊1,2-二烯可以通过用2 H,2 H -3-氯-八氟-1-碘戊烷,2 H -3-氯-八氟戊-1-烯或2 H的碱金属氢氧化物进行剧烈的脱卤化氢反应制得。H,2 H-九氟-1-碘戊烷。第二种前体是通过对第一种前体进行适度的碱性氢碘化制得的,第一种前体是由1,1-二氟乙烯和1-氯六氟-1-碘丙烷与少量异构体2-氯六氟-1-碘丙烷合成而得,对三氟碘甲烷和三氟氯乙烯的混合物进行光解。活性炭上2 H,2 H -3-氯-八氟-1-碘戊烷的热解产生2 H-3-氯-八氟戊-1-烯,反式-2 H -1-氯-八氟戊-2-烯,顺式和反式-2H-九氟戊-2-烯; 2 H -3-氯-八氟戊-1-烯的相似处理得到相同的产物。在20°时,全氟戊1,2-二烯迅速二聚为全氟-(1,2-二乙基-3,4-二亚甲基环丁烷),全氟-(1-乙基-2-亚甲基-3-亚丙基-环丁烷),并且未被鉴定化合物。
Investigation on the dehydrofluorination of 2H,3H-decafluoropentane
作者:Gang Yang、Chengping Zhang、Hengdao Quan
DOI:10.1016/j.jfluchem.2021.109931
日期:2022.1
conducted on the vapor-phase dehydrofluorination of 2H,3H-decafluoropentane. It was found that 2H,3H-decafluoropentane could be dehydrofluorinated to give Z-1,1,1,2,4,4,5,5,5-nonafluoro-2-pentene and Z-1,1,1,3,4,4,5,5,5-nonafluoro-2-pentene over chromium fluoride or aluminum fluoride catalysts. With stoichiometric calculation, Z-isomer was the main product in the dehydrofluorination owing to its lower relative