Fluorine-containing bisphenols, their preparation, their precursors and intermediates, and use of the fluorine-containing bisphenols
View Patent ↗This invention relates to 1,2-di(4-hydroxyaryl)tetrafluoroethanes of the general formula (I) wherein R are each, independently of one another, hydrogen, F, Cl, Br, I, CN, COOR 2 , C 1 -C 4 -alkyl, C 1 -C 4 -alkoxy, C 1 -C 4 -alkylthio, C 1 -C 4 -perfluoroalkyl, C 1 -C 4 -perfluoroalkoxy, C 1 -C 4 -perfluoroalkylthio, C 1 -C 4 -polyfluoroalkyl, C 1 -C 4 -polyfluoroalkoxy, or C 1 -C 4 -polyfluoroalkylthio, R 2 is C 1 -C 4 -alkyl, and n is an integer from 0 to 4. This invention further relates to the preparation of such compounds as well as to precursors and intermediates that can be used in their preparation.
1. A compound of formula (I)
wherein
R are each, independently of one another, F, Cl, Br, I, CN, COOR 2 , C 1 -C 4 -alkyl, C 1 -C 4 -alkoxy, C 1 -C 4 -alkylthlo, C 1 -C 4 -perfluoroalkyl, C 1 -C 4 -perfluoroalkoxy, C 1 -C 4 -perfluoroalkylthio, C 1 -C 4 -polyfluoroalkyl, C 1 -C 4 -polyfluoroalkoxy, or C 1 -C 4 -polyfluoroalkylthio,
R 2 is C 1 -C 4 -alkyl, and
n is an integer from 1 to 4.
2. A compound according to claim 1 wherein
R are each, independently of one another, hydrogen, F, Cl, Br, methyl, methoxy, trifluoromethyl, or trifluoromethoxy, and
n is 1.
3. A compound selected from the group consisting of 1,2-di(3-chloro-4-hydroxyphenyl)tetrafluoroethane, 1,2-di(3-fluoro-4-hydroxyphenyl)tetrafluoroethane, 1,2-di(3-bromo-4-hydroxyphenyl)tetrafluoroethane, and 1,2-di(3-methyl-4-hydroxyphenyl)tetrafluoroethane.