N-fluoropyridinium salt and process for preparing same

Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...

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546 22, 546102, 546116, 546153, 546155, 546157, 546168, 546170, 546180, 546286, 546287, 546321, 546326, 546345, 546346, 546347, C07F 958, C07D491048, C07D21355, C07D21904

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RE0351776

ABSTRACT:
A pyridine-compound is reacted with fluorine together with a [Bronsted] 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.

REFERENCES:
March, Advanced Organic Chemistry, Reactions, Mechanisms and Structure, Second Edition, pp. 460-468, McGraw-Hill Publishers (1977).
Umemoto et al, Chemical Abstracts, vol. 106(15) Abst. No. 106:119,640f Apr. 13, 1987.
"The Chemistry of Heterocyclic Compounds a Series of Monograms" Arnold Weissberger, Consulting Editor, vol. 14, Pyridine and Its Derivatives, Parts 1-4, Edited by Erwin Clingsbert, (1960-1964) Interscience Publishers Inc., New York, N.Y.
"Pyridine and Its derivatives" vol. 14, Supplement Parts 1-4 Edited by R. A. Abramovitch (1974 Parts 1-3), (1975 Part 4), John Wiley and Sons Publishers New York N.Y.
"Pyridine and Its Derivatives," vol. 14, Supplement Part 5, Edited by George R. Newkome, 1984, John Wiley and Sons, Inc Publishers.
Hasso Meinert, Habilitationsschrift, "Contributions of the Chemistry of Halogen Fluroides, Halogens in a Positive Oxidation State and Noble Gases", Dept. of Mathematics and Natural Sciences, Humbolt Univ. Berlin, Germany Dec. 11, 1968.

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