One-pot process to prepare 1,1,2,2-tetrafluoroindane from substituted 2,2-difluorostyrene and sodium chlorodifluoroacetate
摘要:
Reaction of 2,2-difluorostyrenes and sodium chlorodifluoroacetate in diglyme solution at 180 degrees C gave 1-aryl-2,2,3,3-tetrafluorocyclopropane as a primary product. After prolong reaction under the same condition, the 1, 1,2,2-tetrafluoroindanes can be isolated as the only product in good yields. All the tetrafluorocyclopropanes and tetrafluoroindanes were well characterized by spectroscopic analyses. (c) 2006 Elsevier Ltd. All rights reserved.
Mass spectra of 3,3-difluoro-1-halo-2-arylcyclopropenes
作者:Mei-Fang Ding、Shaw-Tao Lin、Chung-Hong Hong
DOI:10.1002/rcm.5243
日期:2011.11.30
The electron ionization (EI) massspectra of a series of 3,3-difluoro-1-halo-2-arylcyclo- propenes (1, 2) give the fragments [M-X](+) (X: Br, Cl) as the base peaks. A comparison of tandem mass spectrometry (MS/MS) profiles of the m/z 151 ions recorded from compounds 1 and 2 and 3-bromo-3,3-difluoro-1-phenylcyclopropyne (5), 1,1,2,2-tetrafluoro-3-phenyl- cyclopropane (6), 1,1,2,2-tetrafluoroindane (7)
一系列3,3-二氟-1-卤-2-芳基环丙烯(1,2)的电子电离(EI)质谱给出片段[MX](+)(X:Br,Cl)基峰。从化合物1和2和3-溴-3,3-二氟-1-苯基环丙炔(5),1、1,2、2记录的m / z 151离子的串联质谱(MS / MS)谱的比较-四氟-3-苯基-环丙烷(6),1,1,2,2-四氟茚满(7)和2,3,3-三氟茚满(8)表明衍生的[MX](+)片段的结构离子更可能是取代的环丙烯离子。使用密度泛函理论(DFT)方法进行计算得出的结果支持此MS / MS分析。
MAKSIMOV, A. M.;PLATONOV, V. E.;YAKOBSON, G. G.;YAXLAKOVA, O. M.;BEKKER, +, IZV. CO AN CCCP. CEP. XIM. N., 1981, N 14/6, 128-133
作者:MAKSIMOV, A. M.、PLATONOV, V. E.、YAKOBSON, G. G.、YAXLAKOVA, O. M.、BEKKER, +