An Efficient Preparation of 3,3'-Methylenebisazulenes.
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概要
- 論文の詳細を見る
Various 3,3′-methylenebis azulenes were prepared in high yields upon treatment of 1-substituted azulenes with a solution of 0.1–0.2 wt% paraformaldehyde in glacial acetic acid at 25°C for 1 h. Thus, 1-methyl-, 1-isopropyl-, 1,5-diisopropylazulene, guaiazulene, and methyl 2-hydroxy-1-azulenecarboxylate readily provided the corresponding 3,3′-methylenebisazulenes, respectively. Acetic acid which had been refluxed with 5 wt% KMnO<SUB>4</SUB> for 2 h and then distilled according to a purification method was found to contain 0.1–0.2 wt% formaldehyde and exert the same 3,3′-methylenebisazulene formation. 3,3′-Dideuteriomethyl-enebis(guaiazulene) was obtained by employing the similar distillate from acetic acid-<I>d</I><SUB>4</SUB>.
- 公益社団法人 日本化学会の論文
著者
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Nozoe Tetsuo
Tokyo Research Laboratories Kao Corporation
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MATSUBARA Yoshiharu
Department of Applied Chemistry, Faculty of Science and Engineering, Kinki University
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Takekuma Shin-ichi
Department Of Applied Chemistry Faculty Of Science And Engineering Kinki University
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Yamamoto Hiroshi
Departmemt Of Chemical Engineering University Of Tokyo
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MATSUBARA Yoshiharu
Department of Agricultural Chemistry, Faculty of Agriculture, Kinki University
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Morita Masanori
Kinki University Co-Operative Laboratories Center
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Zhao Zhendong
Department of Applied Chemistry, Faculty of Science and Engineering, Kinki University
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