Perfluoroalkyl isoxazoles
US4000150A · kind A · utility
4Cited by
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1Claims
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Assignee
Inventors
Key dates
| Filing date | May 21, 1974 |
| Grant date | Dec 28, 1976 |
| Priority date | — |
| Expiry date | May 21, 1994 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D261/04
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Perfluoroalkylated isoxazoles having the formula: ##EQU1## wherein R.sub.F is C.sub.3 - C.sub.15 perfluoroalkyl and R is the same as R.sub.F or a different C.sub.3 - C.sub.15 perfluoroalkyl or C.sub.1 - C.sub.7 alkyl or phenyl or phenyl substituted by C.sub.1 - C.sub.7 alkyl which are prepared by reacting hydroxylamine with a beta-diketone, at least one of whose alkyls is a C.sub.3 - C.sub.15 perfluoroalkyl, and dehydrating the resultant perfluoroalkylated 5-hydroxy-isoxazoline in an autoclave in the presence of polyphosphoric acid. The stable products are useful as heat-exchange media and as surfactants in organic solution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.