Process for producing octafluoro[2,2]paracyclophane
US6380415B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 14, 2001 |
| Grant date | Apr 30, 2002 |
| Priority date | — |
| Expiry date | Feb 14, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F7/0827
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for producing an octafluoro[2,2]paracyclophane includes the steps of (a) reacting 1,4-bis(trifluoromethyl)benzene with a halogenated silane represented by the general formula (1), in the presence of a low valence metal, thereby obtaining a novel compound (precursor) represented by the general formula (2); and (b) conducting in the presence of a fluoride ion a dimerization of the compound into the octafluoro[2,2]paracyclophane,R3SiX  (1)where each R is independently an alkyl group or aryl group, and X is a halogen atom, where R is defined as above. It is possible to produce octafluoro[2,2]paracyclophane with a high yield from 1,4-bis(trifluoromethyl)benzene, which is easily available, via the above compound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.