Wang Wen-bo, Shen Shu-chang, Zhang Li-yuan, An Hong
College of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar 161006, China.
Guang Pu Xue Yu Guang Pu Fen Xi. 2007 May;27(5):892-4.
In the present paper, citric anhydride was made using citric acid. The citric acid mono-polyethyleneoxide nonyl phenyl ether was synthesized by using citric anhydride and polyethyleneoxide nonyl phenyl ether. Finally, the citric acid mono-polyethyleneoxide nonyl phenyl ether amber diehylene glycol dinitrate diglycollic amide was synthesized by using diethanolamine. The raw material, intermediate and product were characterized by IR. The two absorption peaks at 1866.90 cm(-1) and 1781.08 cm(-1) respectively are both strong, with the latter stronger than the former. It was indicated that citric acid had changed into citric anhydride. The absorption peak at 1736.14 cm(-1) is attributable to the stretching vibration of C==O in ester, and that at 1642.39 cm(-1) is attributable to the stretching vibration of C==O in acidamide. It was indicated that the product was citric acid mono-polyethyleneoxide nonyl phenyl ether amber diehylene glycol dinitrate diglycollic amide. So, the synthesis process conditions were right according to the IR data.
在本论文中，使用柠檬酸制备了酸酐。利用酸酐和聚氧化乙烯壬基苯基醚合成了柠檬酸单聚氧化乙烯壬基苯基醚。最后，使用二乙醇胺合成了柠檬酸单聚氧化乙烯壬基苯基醚琥珀酸二乙二醇二硝酸酯二乙醇酰胺。通过红外光谱对原料、中间体和产物进行了表征。在1866.90 cm(-1)和1781.08 cm(-1)处的两个吸收峰都很强，后者比前者更强。这表明柠檬酸已转变为酸酐。在1736.14 cm(-1)处的吸收峰归因于酯中C==O的伸缩振动，在1642.39 cm(-1)处的吸收峰归因于酰胺中C==O的伸缩振动。这表明产物是柠檬酸单聚氧化乙烯壬基苯基醚琥珀酸二乙二醇二硝酸酯二乙醇酰胺。所以，根据红外光谱数据，合成工艺条件是正确的。
