Electrophilic isomerization of substituted perfluorocyclopropanes under the effect of SbF5
摘要:
Perfluoro(alkoxycyclopropanes) are isomerized on heating in the presence of SbF5 into perfluoro(2-alkoxypropylenes), while perfluoro(alkylcyclopropanes) are isomerized into the corresponding internal fluoroolefins under the effect of SbF5.
New and Efficient Syntheses of α-Iodo-α,α-Difluoro- and β-Iodo-α,α,β,β-Tetrafluorocarboxylic Acid Derivatives as Useful Building Blocks for Making Functional Fluoro Compounds
作者:Ming-H. Hung、Lu Long、Zhen-Yu Yang
DOI:10.1021/jo035170j
日期:2004.1.1
converted into various α-iodo-perfluorocarboxylic acid derivatives or telomerized with tetrafluoroethylene to I(CF2CF2)nOSO2Cl. Ring-opening reaction of perfluoroalkoxypentafluorocyclopropane with iodine at 240 °C produced ICF2CF2COF, which was quenched by alcohol, water, or NH3 to give β-iodo-α,α,β,β-tetrafluorocarboxylic acid derivatives. These functional fluorinated iodides can be used as building blocks
全氟烯烃与I-Cl和ClSO 3 H在温和的条件下反应,得到R F CFICF 2 OSO 2 Cl,可以很容易地将其转化为各种α-碘-全氟羧酸衍生物,也可以用四氟乙烯将其端粒化为I(CF 2 CF 2)n OSO 2 Cl。全氟烷氧基五氟环丙烷与碘在240°C下的开环反应生成ICF 2 CF 2 COF,将其用酒精,水或NH 3淬灭得到β-碘-α,α,β,β-四氟羧酸衍生物。这些功能性氟化碘化物可以用作制备选择性氟化化合物的结构单元。
Fluorocyclopropanes. I. Preparation and nuclear magnetic resonance spectra
作者:Peter B. Sargeant
DOI:10.1021/jo00828a029
日期:1970.3
CHEPIK, S. D.;PETROV, V. A.;GALAXOV, M. V.;BELENKIJ, G. G.;MYSOV, E. I.;G+, IZV. AN CCCP. CEP. XIM. ,(1990) N, S. 1844-1851
作者:CHEPIK, S. D.、PETROV, V. A.、GALAXOV, M. V.、BELENKIJ, G. G.、MYSOV, E. I.、G+
DOI:——
日期:——
Preparation of Highly Fluorinated Cyclopropanes and Ring-Opening Reactions with Halogens
作者:Zhen-Yu Yang
DOI:10.1021/jo030014y
日期:2003.5.1
produce XCF(2)CF(2)CF(2)X (X = Cl, Br, I) in 50-80% isolated yields. Pentafluorocyclopropanes c-C(3)F(5)Y [Y = Cl, OCF(3), OC(3)F(7) and OCF(2)CF(CF(3))OCF(2)CF(2)Z; Z = SO(2)F, CN, CO(2)Me] react regiospecifically at 150 degrees C to give XCF(2)CF(2)CFXY, c-C(3)F(5)Br reacts regioselectively with Br(2) to give a 16.7:1 mixture of BrCF(2)CF(2)CFBr(2):BrCF(2)CFBrCF(2)Br, whereas c-C(3)F(5)H reacts unselectively
通过适当的氟化烯烃与六氟环氧丙烷(HFPO)在180摄氏度下的反应制备了各种高度氟化的环丙烷1.通过用Ag(2)O和NH(3)催化将氟化腈1e转化为三嗪衍生物2a和2b。 )/(CF(3)CO)(2)O。氟化环丙烷在升高的温度下与卤素反应,以提供第一种有用的,通用的1,3-二卤代多氟丙烷的合成方法。在150-240摄氏度下,六氟环丙烷和卤素X(2)以50-80%的分离产率产生XCF(2)CF(2)CF(2)X(X = Cl,Br,I)。五氟环丙烷cC(3)F(5)Y [Y = Cl,OCF(3),OC(3)F(7)和OCF(2)CF(CF(3))OCF(2)CF(2)Z; Z = SO(2)F,CN,CO(2)Me]在150°C时发生区域特异性反应,得到XCF(2)CF(2)CFXY,cC(3)F(5)Br与Br(2)发生区域选择性反应给出16.7:BrCF(2)CF(2)CFBr(2):
Electrophilic isomerization of substituted perfluorocyclopropanes under the effect of SbF5
作者:S. D. Chepik、V. A. Petrov、M. V. Galakhov、G. G. Belen'kii、E. I. Mysov、L. S. German
DOI:10.1007/bf00961500
日期:1990.8
Perfluoro(alkoxycyclopropanes) are isomerized on heating in the presence of SbF5 into perfluoro(2-alkoxypropylenes), while perfluoro(alkylcyclopropanes) are isomerized into the corresponding internal fluoroolefins under the effect of SbF5.