Title:
PRODUCTION OF N-FLUOROPYRIDINIUM SULFONATE
Document Type and Number:
Japanese Patent JP3482720
Kind Code:
B2
Abstract:
PURPOSE: To provide a method for efficiently producing the subject compound simply, useful as a fluorinating agent by fluorinating a pyridine sulfonic acid compound using an easily reusable lower aliphatic polyfluoroalcohol as a solvent.
CONSTITUTION: This method for producing an N-fluoropyridiniumsulfonate comprises reacting (B) a pyridine sulfonic acid compound of formula I (R1 to R4 are each H, a halogen, an alkyl, an aryl, nitro, etc.; R is a single bond or an alkylene; M is H, a metal atom or ammonium) with (C) fluorine in (A) a lower aliphatic polyfluoroalcohol (preferably a 2-5C lower aliphatic polyfluoroalcohol, e.g. trifluoroethanol or tetrafluoropropanol) to obtain (D) the N-fluoropyridinium sulfonate of formula II. As the component (C), fluorine diluted to 1-75vol.% by using an inert gas (e.g. nitrogen or helium) is preferably used.
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Inventors:
Teruo Umemoto
Ginjiro Tomizawa
Ginjiro Tomizawa
Application Number:
JP22995A
Publication Date:
January 06, 2004
Filing Date:
January 05, 1995
Export Citation:
Assignee:
Daikin Industries, Ltd.
International Classes:
C07D213/71; C07D213/89; (IPC1-7): C07D213/89
Domestic Patent References:
| JP5125050A | ||||
| JP4235969A | ||||
| JP2231474A |
Attorney, Agent or Firm:
Aoyama Ryo (1 person outside)