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Abstract：
A new DES (MTPPBr-PHTH-DES) was prepared from a mixture of methyltriphenyl-phosphonium bromide (MTPPBr) and phthalic acid (PHTH). The eutectic point phase diagram showed that a one-to-one molar ratio of MTPPBr to PHTH is the optimal molar ratio for the synthesis of new DES. Then, it was characterized with various techniques such as FT-IR, TGA/DTA, densitometer, eutectic point, and NMR and used as a novel acid catalyst in the synthesis of pyrimido[4,5-d]pyrimidines and pyrano[3,2-c]chromes in solvent-free condition. Short reaction time, low temperature, high efficiency, green condition, and easy recycling and separation of the DES catalyst are among the most important features of the presented method.
摘要：
由甲基三苯基-溴化鳞（MTPPBr）和邻苯二甲酸（PHTH）的混合物制备了一种新的DES（MTPPBr-PHTH-DES）。共晶点相图表明，MTPPBr与PHTH的摩尔比为1：1是合成新DES的最佳摩尔比。然后，它的特点是各种技术，如FT-IR，TGA/DTA,密度计,共晶点,和NMR，并用作无溶剂条件下合成嘧啶并[4,5-d]嘧啶和吡喃并[3,2-c]染料的新型酸催化剂。反应时间短,低温,效率高,绿色条件,DES催化剂易于回收和分离是该方法的最重要特征之一。
