Skeletal transformations of perfluorinated 2,2-diethyl- and 2-ethyl-2-phenyl-benzocyclobutenones under the action of antimony pentafluoride
作者:Yaroslav V. Zonov、Tatyana V. Mezhenkova、Victor M. Karpov、Vyacheslav E. Platonov
DOI:10.1016/j.jfluchem.2008.08.002
日期:2008.12
Perfluoro-2-ethyl-2-phenylbenzocyclobutenone heated with SbFs at 70 degrees C and then treated with water, forms perfluoro-3-ethyl-3-phenylphthalide. In contrast to this, heating of perfluoro-2,2-diethylbenzocyclobutenone with SbFs at 70 C gives, after treatment of the reaction mixture with water, perfluoro-2-(pent-2-en-3-yl)benzoic acid. When the reaction temperature is raised to 125 C, a solution of a salt of perfluoro-4-ethyl-3-methylisochromenyl cation is obtained. Hydrolysis of the solution of the salt gives perfluoro-4-ethyl-3-methylisochromen-1-one. (c) 2008 Elsevier B.V. All rights reserved.