Dehydroabitetic acid-β-naphthol ester was prepared by O-acylation reaction of dehydroabitetic acid and β-naphthol in the presence of pyridine as catalyst.The main influence factors were studied and the optimum react...Dehydroabitetic acid-β-naphthol ester was prepared by O-acylation reaction of dehydroabitetic acid and β-naphthol in the presence of pyridine as catalyst.The main influence factors were studied and the optimum reaction conditions were found by orthogonal experimental design to be as follows∶ reaction temperature 100℃,reaction time 3.0h,the molar ratio of dehydroabitetic acyl chloride to pyridine 1∶1.4,the molar ratio of dehydroabitetic acyl chloride to β-naphthol 1∶1.2,the yield amounted to 78.5% with the purity of 97.62%.The target product was analyzed and characterized by IR,TLC and GC-MS methods.展开更多
在微波辐射下,先将歧化松香与聚乙二醇进行酯化反应,合成中间体歧化松香聚乙二醇酯,再将中间体与苹果酸进行酯化反应,合成目标产物歧化松香聚乙二醇苹果酸酯,研究了中间体和目标产物的合成条件。结果表明:①中间体合成的最佳条件为:反...在微波辐射下,先将歧化松香与聚乙二醇进行酯化反应,合成中间体歧化松香聚乙二醇酯,再将中间体与苹果酸进行酯化反应,合成目标产物歧化松香聚乙二醇苹果酸酯,研究了中间体和目标产物的合成条件。结果表明:①中间体合成的最佳条件为:反应时间90 m in,反应温度240℃,歧化松香与聚乙二醇的摩尔比为1∶1.6;②目标产物合成的最佳条件为:反应时间60 m in,反应温度140℃,微波功率800 W。利用IR、UV等测试技术对中间体及目标产物进行了结构表征,并测定了它们的主要表面性能。结果表明,中间体和目标产物均为性能优良的新型非离子表面活性剂。展开更多
文摘Dehydroabitetic acid-β-naphthol ester was prepared by O-acylation reaction of dehydroabitetic acid and β-naphthol in the presence of pyridine as catalyst.The main influence factors were studied and the optimum reaction conditions were found by orthogonal experimental design to be as follows∶ reaction temperature 100℃,reaction time 3.0h,the molar ratio of dehydroabitetic acyl chloride to pyridine 1∶1.4,the molar ratio of dehydroabitetic acyl chloride to β-naphthol 1∶1.2,the yield amounted to 78.5% with the purity of 97.62%.The target product was analyzed and characterized by IR,TLC and GC-MS methods.
文摘在微波辐射下,先将歧化松香与聚乙二醇进行酯化反应,合成中间体歧化松香聚乙二醇酯,再将中间体与苹果酸进行酯化反应,合成目标产物歧化松香聚乙二醇苹果酸酯,研究了中间体和目标产物的合成条件。结果表明:①中间体合成的最佳条件为:反应时间90 m in,反应温度240℃,歧化松香与聚乙二醇的摩尔比为1∶1.6;②目标产物合成的最佳条件为:反应时间60 m in,反应温度140℃,微波功率800 W。利用IR、UV等测试技术对中间体及目标产物进行了结构表征,并测定了它们的主要表面性能。结果表明,中间体和目标产物均为性能优良的新型非离子表面活性剂。
