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首页> 外文期刊>Bulletin of the Chemical Society of Japan >Synthesis of 2,8-Dioxaspiro[4,5]decane-1,3,7,9-tetrone and the Reactions with Amines
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Synthesis of 2,8-Dioxaspiro[4,5]decane-1,3,7,9-tetrone and the Reactions with Amines

机译:2,8-二氧杂螺[4,5]癸烷-1,3,7,9-四元的合成及与胺的反应

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摘要

For the studies of highly-sophisticated utilization of itaconic anhydride, some compounds of polybasic carboxylic acids having a quaternary a spiro carbon atom were prepared, starting from itaconic anhydride and isoprene. Aliphatic tetracarboxylic dianhydride having a spiro carbon atom with five- and six-membered rings, 2,8-dioxaspiro[4,5]decane-1,3,7,9-tetrone(TCDA), was also obtained. The reaction of TCDA with primary amines and subsequent dehydration gave two types of products, either diimides or imide (with five-membered ring)-anhydrides (with six-membered ring), depending on the hydrocarbon moiety of the amines used. It was suggested that each imide-anhydride was formed by the intramolecular ring transformation of the intermediate amic acid-anhydride.
机译:为了研究衣康酸酐的高度复杂的利用,从衣康酸酐和异戊二烯开始,制备了具有季碳原子和螺碳原子的多元羧酸的一些化合物。还获得了具有螺环碳原子和五元和六元环的脂肪族四羧酸二酐,2,8-二氧杂螺[4,5]癸烷-1,3,7,9-四极(TCDA)。 TCDA与伯胺的反应以及随后的脱水反应产生了两种类型的产物,即二酰亚胺或酰亚胺(具有五元环)-酸酐(具有六元环),具体取决于所用胺的烃部分。提示每种酰亚胺酐是通过中间体酰胺酸酐的分子内环转化形成的。

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