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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 24, Number 11
BKCSDE 24(11)
November 20, 2003 

Photochemical Reaction of Nalidixic Acid in Methanol
Hyoung-Ryun Park, Ok-Hyun Park, Hong-Yune Lee, Jung-Ja Seo, Ki-Min Bark
Photochemical reaction, Nalidixic acid, 1-Ethyl-7-methyl-4-oxo-1,4-hydro-1,8-naphthyridine, Formic acid, Formaldehyde
The photochemical reactions of methanolic nalidixic acid (NAL) solution in the absence and in the presence of air have been investigated using 300 nm UV light. From the reactions, 1-ethyl-7-methyl-4-oxo-4-hydro-1,8-naphthyridine (EMDN), formic acid, and formaldehyde are produced. In the presence of air, hydrogen peroxide is also detected along with the products listed above. The presence of oxygen during the irradiation of methanolic NAL solution effects on the product yield. The initial quantum yields of the products and of the NAL decomposition are determined. Possible reaction pathways for the photochemical reaction are suggested on the basis of the products analysis.
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