N-fluoropyridinium salt and process for preparing same
US4996320A · kind A · utility
6Cited by
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5Claims
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Key dates
| Filing date | Jan 9, 1989 |
| Grant date | Feb 26, 1991 |
| Priority date | — |
| Expiry date | Jan 9, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07J51/00
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A pyridine-compound is reacted with fluorine together with a Bronsted acid-compound or Lewis acid to form a N-fluoropyridinium salt which is very active to other compounds but is very selective for the preparation of a desired product and this product is very useful for a fluorine-introducing agent which makes it useful for the preparation of fluoro-compounds such as thyroid inhibitor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.