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  

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

作　　者：石明孝[1] 宣日成[1] 吴清洲[1] 

机构地区：[1]浙江大学应用化学研究所

出　　处：《波谱学杂志》1996年第2期163-168,共6页Chinese Journal of Magnetic Resonance

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。Based upon thirteen kinds of 2,2,4-trimethylpentane-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.

关 键 词：戊二醇 脂肪酸酯 亚甲基质子 NMR 

分 类 号：Q547[生物学—生物化学] O482.532[理学—固体物理]