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利用~(13)C-NMR方法研究了弱碱K_2CO_3存在下酚酞成盐反应及其与活性双卤砜亲核缩聚反应过程中的结构特征。对一系列碱性条件下酚酞(PP)与4,4’-二氯二苯砜(DCDPS)的缩聚反应的研究表明任何影响内酯结构酚酞盐生成的因素都会严重阻碍聚合反应的进行。对模型化合物存在下K_2CO_3在极性非质子溶剂中的溶解/解离行为的研究结果表明酚酞类Card。双酚与固体K_2CO_3之间可能存在着一种特殊的络合作用。基于我们系列研究结果,本文中总结提出了弱碱K_2CO_3存在下酚酞的反应机理。
The structural characteristics of phenolphthalein salt formation reaction and its reaction with active dihaphanone in the presence of weak base K 2 CO 3 were studied by 13 C-NMR. Studies on the polycondensation of phenolphthalein (PP) and 4,4’-dichlorodiphenylsulfone (DCDPS) under a series of basic conditions show that any factors that affect the formation of the phenolphthalein salt of the lactone structure will seriously hinder the polymerization reaction. The results of the dissolution / dissociation of K_2CO_3 in polar aprotic solvents in the presence of model compounds show that phenolphthalein. There may be a special complex between bisphenol and solid K_2CO_3. Based on the results of our series, the reaction mechanism of phenolphthalein in the presence of weak base K 2 CO 3 is summarized in this paper.