N,N-二(2-羟乙基)-2-氨基丙烯的合成及表征

Synthesis and characterization of N,N-bis(2-hydroxyethyl)-2-amino-propenyl

以二乙醇胺和氯丙烯为原料,在碱性条件下,控制温度、时间和摩尔比反应生成N,N-二(2-羟乙基)-2-氨基丙烯,由核磁氢谱(1 H-NMR)、红外光谱(FT-IR)、元素分析、XRD表征了合成产物的结构和结晶性,用热重分析仪表征了产物的热稳定性.根据产物中叔胺的含量来确定最佳的合成工艺:反应温度为50℃,反应时间为70min,单体的摩尔比为n(二乙醇胺)∶n(氯丙烯)=1∶1.1,目标产物的产率可达到96%以上.

The N,N-bis（2-hydroxyethyl）-2-amino-propenyl was prepared by using diethanolamine and allyl chloride as raw materials under alkaline conditions.According to the content of the tertiary amine the best synthesis conditions were determined.The reaction temperature was 50 ℃,the reaction time was 70 min,the molar ratio of monomers was n（diethanolamine）∶n（allyl chloride）= 1∶1.1,the yield of target product was above 96%.The structure and crystallinity of product was characterized by means of 1 H-NMR spectrum（1 H-NMR）,infrared spectroscopy（FT-IR）,elemental analysis and X-ray diffraction.The thermal stability of the product was characterized through thermal gravimetric analysis instrument.