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CN101044108B 笼状环丁烷羧酸二酐及其制备方法 有权

笼状环丁烷羧酸二酐及其制备方法
摘要：
使式[1]表示的1，2，3，4-环丁烷四甲酸-1，2：3，4-二酐化合物和式[2]表示的醇化合物在酸催化剂的存在下发生反应，得到式[3]的化合物，使式[3]的化合物在碱催化剂的存在下进行异构化，得到式[4]的化合物，再使式[4]的化合物与有机酸发生反应，得到式[5]的化合物，然后进行脱水反应，得到式[6]的1，2，3，4-环丁烷四甲酸-1，3：2，4-二酐化合物。(式中，R1和R2分别独立地表示氢原子、卤原子、碳数1～10的烷基、碳数1～10的卤代烷基、碳数3～8的环烷基、苯基或氰基，R3表示碳数1～10的烷基)。
摘要（英）：

1, 2, 3, 4-cyclobutance formic acid - 1, 2: 3, 4-anhydride compound in the formula [1] reacts with the alcohol compound in the formula [2] in the presence of an acid catalyst to produce the compound in the formula [3]. The compound of the formula [3] is isomerized in the presence of an alkali catalyst to yield the compound of the formula [4]. The compound of formula [4] reacts with an organic acidto yield the compound of the formula [5]. Then, the compound of the formula [5] performs a dehydration reaction to yield 1, 2, 3, 4-cyclobutance formic acid-1, 2:3, 4-anhydride compound in the formula [6] (wherein, R1 and R2 respectively stand for hydrogen atom, halogen atom, alkyl with 1 to 10 carbon numbers, alkyl halide with 1 to 10 carbon numbers, and cycloalkyl, phenyl or cyan with 3 to 8 carbon numbers; R3 stands for alkyl with 1 to 10 carbons numbers).

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