Process for the preparation of 1-hydroxy-pyridones

Details Process for the preparation of 1-hydroxy-pyridones Process for the preparation of 1-hydroxy-pyridones

1974-08-23

1976-08-03

Jiles, Henry R.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

2602948R, 2602949, 260240D, 260240E, 260240K, 2602409, C07D21350

Patent

active

039728889

ABSTRACT:
Method for making 6-substituted-1-hydroxy-2-pyridones, which may also be substituted in one or more of the 3-, 4-, and 5-positions, by reaction of the corresponding 2-pyrone with hydroxylamine or its salts in the presence of imidazole or a 2-aminopyridine which may be mono- or di-methyl substituted.

REFERENCES:
wiley et al. "J. Am. Chem. Soc." vol. 78 pp. 2393-2398 (1956).
El--Kholy et al. "J. Chem Soc." (1961) pp. 4490-4498.

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