波谱学杂志 ›› 1996, Vol. 13 ›› Issue (2): 163-168.

• 研究论文 • 上一篇    下一篇

2,2,4-三甲基-1,3-戊二醇脂肪酸双酯中亚甲基质子的磁不等价性

石明孝, 宣日成, 吴清洲   

  1. 浙江大学应用化学研究所, 杭州 310027
  • 收稿日期:1995-05-22 修回日期:1995-07-10 出版日期:1996-04-05 发布日期:2018-01-17

MAGNETIC NONEQUIVALENCES OF METHYLENE PROTONS IN 2,2,4-TRIMETHYLPENTANE-1,3-DIOL DIESTER

Shi Mingxiao, Xuan Richeng, Wu Qingzhou   

  1. Institute of Applied Chemistry, Zhejiang University, Hangzhou 310027
  • Received:1995-05-22 Revised:1995-07-10 Online:1996-04-05 Published:2018-01-17

摘要: 在合成13种2,2,4-三甲基-1,3-成二醇(TMPD)脂肪酸双酯的基础上,详细讨论了亚甲基中两个磁不等价质子的化学位移,偶合常数,谱线强度和磁不等价性与分子结构的关系.为了使TMPD脂肪酸双脂中各基团的相对取向能满足分子最稳定的条件,提出TMPD脂肪酸酯应按分子构型Ⅱ排列的结论.

关键词: 2,2,4-三甲基-1,3-戊二醇, 2,2,4-三甲基-1,3-戊二醇脂肪酸酯, 亚甲基质子的磁不等价性, NMR

Abstract: Based upon thirteen kinds of 2,2,4-trimethylpentane-diol diester synthesized, the relationship between chemical shifts, coupling constants, spectral intensities, magnetic nonequivalences of methylene proton and molecular structures had been discussed.In order to decrease steric hindrance caused by mutual interaction of respective groups and to satisfy molecular stability,the diesters were arranged according to configuration Ⅱ.

Key words: 2,2,4-Trimethylpentane-1,3-diol, 2,2,4-trimethylpentane-diol diester, Magnetic nonequivalences of methylene protons, NMR