perfluoro-2-isopropyl-1,2-dihydrobenzocyclobuten-1-one;perfluoro-2-isopropylbenzocyclobutenone;author's name was corrected according to IUPAC by addition prefix 1,2-dihydro to parent component of name;2,3,4,5,8-Pentafluoro-8-(1,1,1,2,3,3,3-heptafluoropropan-2-yl)bicyclo[4.2.0]octa-1,3,5-trien-7-one;2,3,4,5,8-pentafluoro-8-(1,1,1,2,3,3,3-heptafluoropropan-2-yl)bicyclo[4.2.0]octa-1(6),2,4-trien-7-one
Carbonylation of Polyfluorobenzocyclobutenones in a SbF5 Medium
摘要:
The carbonylation of perfluoro-2-R-benzocyclobutenones (R = F, CF3, C2F5, C6F5) in a CO-SbF5 system is accompanied by transformations of the four-membered cycle in the substrate to form polyfluorinated 1H-isochromene derivatives. The reaction of perfluoro-2-R-benzocyclobutenes (R = F, CF3, C2F5) with (CF3CO)(2)O or CF3COOH in a SbF5 medium in a sealed ampule involves formation of polyfluorobenzocyclobutenones and their carbonylation under the reaction conditions.
Generation of perfluorinated 1-alkylbenzocyclobuten-1-yl and 1-alkylindan-1-yl cations. On paradoxical stabilizing influence of an electron-withdrawing perfluoroisopropyl group on the relative stabilities of the cations
作者:Tatyana V. Mezhenkova、Victor M. Karpov、Irina V. Beregovaya、Yaroslav V. Zonov、Igor P. Chuikov、Vyacheslav E. Platonov
DOI:10.1016/j.jfluchem.2016.10.009
日期:2016.12
alkylbenzocycloalken-1-yl cations containing a fluorine atom or a perfluoroalkyl group in the cationic centre were generated. Contrary to expectations, a number of stable long‐lived perfluoro-1-isopropylbenzocycloalken-1-yl cations containing an electron-withdrawing perfluoroisopropyl group in the cationic centre have been obtained. The DFT (B3LYP/6-31G*) calculations showed that the relativestabilities of isomeric