波谱学杂志 ›› 2007, Vol. 24 ›› Issue (2): 125-132.

• 研究论文 • 上一篇    下一篇

3,5-二甲基金刚胺盐酸盐的NMR研究

任会学; 林吉茂;孙友敏;常乃丰;王琦   

  1. 1.山东建筑大学 市政与环境工程学院, 济南 250101; 2.山东大学 化学与化工学院, 济南 250100
  • 收稿日期:2006-10-17 修回日期:2006-12-07 出版日期:2007-06-05 发布日期:2009-12-05
  • 通讯作者: 任会学

An NMR Study on 3, 5-Dimethyladamantanamine Hydrochloride Salt

REN Hui-xue;LIN Ji-mao;SUN You-min;CHANG Nai-feng;WANG Qi   

  1. 1.School of Environmental Engineering, Shandong Architecture University, Jinan 250101, China;2.School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
  • Received:2006-10-17 Revised:2006-12-07 Online:2007-06-05 Published:2009-12-05
  • Contact: Ren Hui-xue

摘要: NMR核磁共振谱显示3,5-二甲基金刚胺盐酸盐是一个刚性结构,但其分子结构包含2个非对映体的立体构型形式. 我们通过利用DEPT,1H-1H COSY,HSQC和HMBC等技术所测得的二维谱图数据对NMR数据进行了完整的归属分析,其中13C NMR谱图显示在δ=29~54 ppm之间的十组峰表示所有碳的共振,而且由于不同的分子构象导致在13C NMR谱中有3个不同的季碳峰和1H NMR中的2个不同的甲基峰. 由于H-5的叔碳H原子与邻近CH2 的平面二面夹角均约为600,致使耦合常数极其小,波谱仪难以分辨它们从而使1H NMR峰为单重峰.

关键词: NMR, 归属, 3,5-二甲基金刚胺盐酸盐, 非对映体

Abstract: 1H and 13C NMR spectroscopy was used to study the structure and configuration of 3, 5-dimethyladamantanamine hydrochloride salt. Complete NMR assignments were made using DEPT, 1H-1H COSY, HSQC and HMBC techniques. The NMR data indicated that the compound has a rigid structure and is comprised of two diastereomeric forms. There are ten peaks in the 13C NMR spectrum of the compound within the region δ C 29~54 ppm. Because the compound has two different molecular configurations, there exist three peaks of quaternary carbons in the 13C NMR spectrum and two peaks of methyl groups in the 1H NMR spectrum. The two plane angles between the tertiary proton H-5 and three adjacent CH2 are near 60°, resulting in very small coupling constants among these protons. Consequently, the resonance of these protons can not be resolved and presents as a singlet in the 1H spectrum.

Key words: NMR, assignments, 3, 5-dimethyladamantanamine hydrochloride, diastereomeric forms