Process for the production of 2-hydroxypyridines from 2-pyridine

Details Process for the production of 2-hydroxypyridines from 2-pyridine Process for the production of 2-hydroxypyridines from 2-pyridine

1983-11-08

1986-09-02

Rotman, Alan L.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

546298, 546299, 546326, C07D21330, C07D21355

Patent

active

046097341

ABSTRACT:
Process for the production of 2-hydroxypyridines having the formula: ##STR1## from 2-pyridine carboxylic acid-N-oxides having the formula: ##STR2## wherein R is H, a --COOH group, an alkyl group having 1 to 8 carbon atoms or an aryl group and n designates a number between 1 and 4. The N-oxide is converted using lower aliphatic carboxylic acid anhydrides in the presence of a tertiary amine. The conversion product is then hydrolyzed.

REFERENCES:
patent: 3153044 (1964-10-01), Zaslowsky
patent: 3862159 (1975-01-01), Umezawa et al.
patent: 3920657 (1975-11-01), Beschke et al.
Chemical Abstracts, 90: 174689(e), 1979, Yu et al.
Chemical Abstracts, 88: 14171704m, 1978, Yu et al.
J. Org. Chemistry, 26, (1961), 428.
Bull. Chem. Soc. Japan 42, 3350, (1969).

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