N-取代苯基马来酰亚胺合成的1H-NMR研究

Study of N-Substituted Phenylmaleimide Synthesis with 1H-NMR

中文关键词:  N-苯基马来酰亚胺  氢谱的核磁共振  合成  表征

英文关键词:N-substituted phenylmaleimide  proton nuclear magnetic resonance spectroscopy  characterization  synthesis

中文摘要:

      采用核磁共振氢谱对合成的N-取代苯基马来酰亚胺系列产物和反应过程的跟踪表征.通过研究产物和反应过程混合物的碳碳双键上质子、苯环上质子的化学位移和强度变化,判断反应进行程度.同时还研究了取代基对反应产物和中间产物的碳碳双键质子和苯环质子偶合常数的影响.

英文摘要:

      The preparation and cyclodehydration of N-Substituted phenylmaleamic acids were studied. The raw material, N-Substituted phenylmaleamic acids, N-Substituted phenylmaleimides and their mixture have been characterized by nuclear magnetic resonance spectroscopy. From the appearance,decrease or change of COOH proton resonance (～10 ppm), HC=CH proton resonance peak, conversion characterization of maleamic acids and maleimides were determined. The chemical shifts related to draw electron of substituting group and coupling constant were investgerted.