| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for easily producing an N-fluoropyridinium salt in high yield while suppressing decomposition of the product and suitable for mass-production. SOLUTION: The method for producing the N-fluoropyridinium salt expressed by general formula (3) (wherein R<SP>1</SP>to R<SP>5</SP>and X are each an acid salt) comprises mixing of a pyridine compound having at least one group selected from halogen atom, acyl group, alkoxycarbonyl group, nitro group, cyano group and amide group, and hydrogen atom as the remaining part, with a Bronsted acid represented by HBF<SB>4</SB>, HPF<SB>6</SB>, HSbF<SB>6</SB>and HClO<SB>4</SB>in an organic solvent and reaction with fluorine gas in the presence of water and hydrofluoric acid, wherein the addition amount of water is 1.6-10 equivalent and the amount of the hydrofluoric acid to be added beforehand is 2-10 equivalent. COPYRIGHT: (C)2010,JPO&INPIT
|
