The preparation of tetramethylphthalic anhydride.
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概要
- 論文の詳細を見る
The alkaline hydrolysis of bis(nitromethyl)prehnitene (<B>1</B>) with aqueous sodium hydroxide gave almost quantitatively disodium tetramethylphthalate (<B>11</B>). Under milder conditions the sodium salts of tetramethylphthalimide (<B>8</B>), <I>N</I>-hydroxytetramethylphthalimide (<B>10</B>), and 2-hydroxy-3-hydroxyimino-4,5,6,7-tetramethylphthalimide (<B>9</B>) were fo were formed, probably as intermediate products of the above reaction. But, pentamethylphenylnitromethane (<B>14</B>) and bis(nitromethyl)isodurene (<B>15</B>) were not hydrolyzed in an aqueous base. From the above results, it is recognized that the sodium nitronate from <B>1</B> is unstable in a different way from general nitronates such as the sodium salt of <B>14</B> or <B>15</B>. It appears that the instability of <B>1</B> arises from the two adjacent nitromethyl groups on the benzene ring.
- 公益社団法人 日本化学会の論文
著者
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Chiba Koji
Department of Apblied Chemistry, Faculty of Engineering, Yamagata University
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Sato Eiji
Department of Apblied Chemistry, Faculty of Engineering, Yamagata University
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