N,N,N′,N′-四丙酸甲酯-1,4-苯二胺的合成及表征

Synthesis and Characterization of the N,N,N′,N′-tetra Methyl Propionate-1,4-phenylenediamine

以对苯二胺和丙烯酸甲酯为原料,冰醋酸为溶剂,经迈克尔加成反应合成了一种高度对称的多枝状化合物:N,N,N′,N′-四丙酸甲酯-1,4-苯二胺。产物的结构通过核磁(1 H-NMR)、液相色谱-质谱(LC-MS)、红外(FT-IR)及元素分析等确定。探讨了反应条件对产率的影响,适宜的条件为:n(对苯二胺):n(丙烯酸甲酯)=(1∶4.5)～(1∶5.5),反应时间为100h,溶剂为冰醋酸,反应温度为80℃,产率可达93.0%。

A highly symmetric multi-branched compound N, N, N＇, Nf- tetra methyl propionate-1,4-phenylenedia- mine has been synthesized by Micheal addition reaction using 1,4-phenylenediamine and acrylic acid methyl ester, as starting materials, and glacial acetic acid as solvent. The structure of the compound was confirmed by 1 H-NMR, liquid mass spectrometry test （LC-MS）, infrared spectrum test （F＇I＇-IR）, and elemental analysis. The effects of reaction condi tions on the yield of the dendritic compound were investigated and the optium reaction conditions are as follows： the molar ratio of 1,4-phenylenediamine to acrylic acid methyl ester is （1 ： 4. 5）～（1 ： 5.5）, the reaction time is 100 h and the reac- tion temperature is 80 ℃. Under the conditions, the yield of product is up to 93.0%.