抄録
Fluorescent compounds, I and II, were obtained from the ethanolic and sulfuric acid reaction mixtures of benzaldehyde and of cinnamaldehyde with 1, 2-diaminonaphthalene monosulfate, respectively, and proved to be identical fluorescent compounds with those produced under the conditions of the method of aldehyde determination. I and II were characterized as 2-substituted naphth [1, 2-d] imidazole derivatives shown in Chart 1 and 2. From the sulfuric acid reaction mixture of pyruvic acid, fluorescent compounds, III and IV, were separated. III was determined as a benzoquinoxalinone derivative shown in Chart 3 and found not to be fluorescent compound produced under the conditions of the method. IV was main fluorescent compound produced from pyruvic acid under the conditions of the method though its structure could not be elucidated. The thin-layer chromatographic and fluorescence spectral data indicated that IV was identical with a fluorescent compound derived from acetaldehyde under the conditions of the method.
