N-fluoropyridinium salt and process for preparing same
USRE35177E · kind E · reissue
0Cited by
0References
5Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Feb 17, 1994 |
| Grant date | Mar 12, 1996 |
| Priority date | — |
| Expiry date | Feb 17, 2014 |
Classification
- Technology area (CPC —)General
Abstract
A pyridine-compound is reacted with fluorine together with a .[.Bronsted.]. .Iadd.Bronsted .Iaddend.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.