The Synthesis of Azulene Derivatives Condensed with Several Heterocycles
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概要
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The reactions of ethyl 1,2-diaminoazulene-3-carboxylate with formic acid, nitrous acid, glyoxal sodium bisulfite, diacetyl, and benzil afforded the corresponding azulene derivatives condensed at the 1,2-position with nitrogen-containing heterocycles, namely, imidazole, triazole, and pyrazine rings. 2-Amino-1-formylazulene reacted with guanidine or thiourea to give 2-aminoazuleno[2,1-<I>d</I>]pyrimidine. The ultraviolet and visible absorption spectra of these azulenes are presented.
- 公益社団法人 日本化学会の論文
著者
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Nozoe Tetsuo
Department of Chemistry Faculty of Science Tohoku University
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Asao Toyonobu
Department of Chemistry Faculty of Science Tohoku University
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Kobayashi Masao
Department of Chemistry, Faculty of Science, Tohoku University
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KOBAYASHI MASAO
Department of Chemical Engineering, Faculty of Engineering Science, Osaka University
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