Polyfluorinated oxetanes are prepared in high yields by an electrophilic [2 + 2] cycloaddition reaction between hexafluoroacetone and fluorinated ethylenes that is catalyzed by an anhydrous aluminum chlorofluoride Lewis acid. The reaction is regiospecific with hydrofluoroethylenes CHX=CF2(X=H, F, Cl, Br), whereas halotrifluoroethylenes CFX=CF2 (X=Cl, Br) give nearly equal amounts of the isomeric oxetanes. Hexafluoropropylene oxide, which rapidly rearranges under the reaction conditions, can be substituted for hexafluoroacetone in this new oxetane synthesis.
Motnyak, L. A.; Burmakov, A. I.; Kunshenko, B. V., Journal of Organic Chemistry USSR (English Translation), 1983, vol. 19, # 4, p. 634 - 640
作者:Motnyak, L. A.、Burmakov, A. I.、Kunshenko, B. V.、Neizvestnaya, T. A.、Alekseeva, L. A.、Yagupol'skii, L. M.
DOI:——
日期:——
MOTNYAK, L. A.;BURMAKOV, A. I.;KUNSHENKO, B. V.;NEIZVESTNAYA, T. A.;ALEKS+, ZH. ORGAN. XIMII, 1983, 19, N 4, 720-726
作者:MOTNYAK, L. A.、BURMAKOV, A. I.、KUNSHENKO, B. V.、NEIZVESTNAYA, T. A.、ALEKS+
DOI:——
日期:——
TARRANT, PAUL;BULL, R. N., J. FLUOR. CHEM., 40,(1988) N 2-3, C. 201-215
作者:TARRANT, PAUL、BULL, R. N.
DOI:——
日期:——
A New Synthesis of Fluorinated Oxetanes
作者:Viacheslav A. Petrov、Fred Davidson、Bruce E. Smart
DOI:10.1021/jo00116a030
日期:1995.6
Polyfluorinated oxetanes are prepared in high yields by an electrophilic [2 + 2] cycloaddition reaction between hexafluoroacetone and fluorinated ethylenes that is catalyzed by an anhydrous aluminum chlorofluoride Lewis acid. The reaction is regiospecific with hydrofluoroethylenes CHX=CF2(X=H, F, Cl, Br), whereas halotrifluoroethylenes CFX=CF2 (X=Cl, Br) give nearly equal amounts of the isomeric oxetanes. Hexafluoropropylene oxide, which rapidly rearranges under the reaction conditions, can be substituted for hexafluoroacetone in this new oxetane synthesis.
The reaction of some 3- and 4-fluorooexetanes with acids
作者:Paul Tarrant、R.N. Bull
DOI:10.1016/s0022-1139(00)83066-3
日期:1988.8
well as cleavage of the ether leakage to give chloroalkyl carbinols or in, some cases, vinyl carbinols. Individual samples of the and -3,4-difluorooxetanes formed roughly equivalent amounts of the 3-fluoro-4-chlorooxetane stereoisomers, indicating a common carbonium intermediate. Treatment of the 4-fluorooxetane with sulfuric acid gave a dioxetane, a dioxene and an unsaturated aldehyde.