58161-61-8Relevant academic research and scientific papers
Carbonylation of Polyfluorobenzocyclobutenones in a SbF5 Medium
Zonov, Ya. V.,Karpov,Mezhenkova
, p. 1103 - 1111 (2019/10/14)
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)2O or CF3COOH in a SbF5 medium in a sealed ampule involves formation of polyfluorobenzocyclobutenones and their carbonylation under the reaction conditions.
Transformations of perfluorinated 1-alkyl-, 1-phenyl- and 1,2-dialkylbenzocyclobutenes under the action of SiO2/SbF5
Zonov, Yaroslav V.,Karpov, Victor M.,Platonov, Vyacheslav E.,Rybalova, Tatjana V.
, p. 41 - 50 (2013/02/25)
Heating of perfluorinated 1-methyl-, 1-ethyl- and 1- isopropylbenzocyclobutenes with SiO2 in an SbF5 medium at 75 °C results in perfluoro-2-alkylbenzocyclobutenones or perfluoro-3-alkylphthalides formation. Perfluorinated 1,2-diethyl- and 1-ethyl-2-methylbenzocyclobutenes react with SiO2/SbF5 at 75 °C to form, after treatment of the reaction mixture with water, perfluorinated 1,3-diethyl- and 1-ethyl-3-methylphthalan-1,3-diol, respectively. Perfluoro-1,2-diisopropylbenzocyclobutene under the action of SiO 2/SbF5 at 95 °C is converted to perfluoro-7,8- diisopropylbicyclo[4.2.0]octa-1,5,7-triene-3,4-dione and perfluoro-1,2- diisobutyrylbenzene. Perfluoro-1-methyl-2-phenylbenzocyclobutene does not react with SiO2 in an SbF5 medium at 75 °C, perfluoro-1-phenylbenzocyclobutene in analogous conditions gives a mixture of perfluorinated 2-hydroxy-2-phenylbenzocyclobutenone and 2-benzoylbenzoic acid.
Transformations of perfluorinated 2-Alkyl- and 2,2- dialkylbenzocyclobutenones in SbF5 and SiO2-SbF 5
Zonov,Karpov,Platonov
experimental part, p. 1517 - 1526 (2011/02/24)
Perfluorinated 2-methyl- and 2-ethylbenzocyclobutenones on heating in SbF5 underwent isomerization into perfluoroindan-1-one and perfluoro(2-methylindan-1-one), while their reaction with SiO 2-SbF5 gave perfluorinated 3-methyl- and 3-ethylphthalides, respectively. Perfluorinated 2-ethyl-2-methyl- and 2,2-diethylbenzocyclobutenones reacted with SbF5 to produce perfluorinated 2-(but-2-en-2-yl)- and 2-(pent-2-en-3-yl)-benzoic acids, and their transformations in SbF5 over SiO2 afforded 5,6,7,8-tetrafluoro-1-oxo-3-trifluoromethyl-1H-isochromene-4-carboxylic acid and perfluoro(4-ethyl-3-methyl-1H-isochromen-1-one), respectively.
Transformation of perfluorinated benzocycloalkenes and alkylbenzenes to their carbonyl derivatives under the action of CF3COOH/SbF5
Zonov, Yaroslav V.,Karpov, Victor M.,Platonov, Vyacheslav E.
, p. 1058 - 1064 (2008/02/10)
Perfluorinated benzocycloalkenes (benzocyclobutene, indan, tetralin), alkylbenzocycloalkenes and alkylbenzenes react with CF3COOH/SbF5 at 20-50 °C giving the corresponding carbonyl derivatives.
