锦纶单体己内酰胺及其烷基化反应产物的构象探讨

Research on Conformation of Caprolactam and Its Alkyl Derivatves

己内酰胺以苯为介质用硫酸二甲酯处理,在不同的摩尔比条件下生成两个甲基化产物。由己内酰胺和硫酸二甲酯均相反应,只得到一个甲基化衍生物。在上述相似的条件下,己内酰胺和硫酸二乙酯反应只得到一个产物——O-乙基己内酰亚胺。本文用核磁共振谱验证了前人认定的两个甲基衍生物的分子结构并用位移试剂进行诱导结合场扫去偶法确定出各信号的归属,提出了己内酰胺及其烷基衍生物的优势构象。

Caprolactam and its alkyl derivatives,N-methyl caprolactam,O-methyl caprolac-tim and O-ethyl caprolactim have been synthesized.Their NMR spectrum and NMR spectrum ofabove caprolactam derivatives in presence of verious molar ratio chemical shift reagent Eu (DPM)_3were measured.The prefered conformation of these caprolaetams is suggested.