- Opening of the four-membered ring in perfluorinated 1-alkyl-2-phenyl-and 1-aryl-1,2-dihydrocyclobutabenzenes in the system I2-SbF5
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Reactions of perfluorinated 1-phenyl-, 1-(2-ethylphenyl)-, 1-(4-ethylphenyl)-, 1-methyl-2-phenyl-, and 1-ethyl-2-phenyl-1,2- dihydrocyclobutabenzenes with iodine in antimony pentafluoride at 130°C, followed by hydroysis of the reaction mixture, resulted in the formation of perfluorinated 2-methyl-, 2-ethyl-2′-methyl-, 4-ethyl-2'-methyl-, 2-ethyl-, and 2-propylbenzophenones via opening of the four-membered ring in the initial cyclobutabenzene at the C1-C2 bond. The presence of hydrogen fluoride facilitates the process and promotes profound transformations leading to anthracene derivatives.
- Mezhenkova,Karpov,Platonov
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experimental part
p. 1026 - 1034
(2011/10/19)
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