含手性轴的季戊四醇双缩醛的NMR研究

采用1D和2D梯度场NMR技术(包括1D ¹H NMR, ¹³C NMR, DEPT, 2D ¹H-¹H COSY, HSQC, HMBC)，对3，3′-二（2，4-二氯苯基）-2，4，2′，4′-四氧杂螺[5.5]十一烷的4个亚甲基呈现的4组裂分峰进行了明确的归属，也对化合物中其它¹H和¹³C NMR谱信号进行了全归属，为四氧杂螺双缩醛类化合物的结构鉴定提供了充分依据.

An NMR Study on Pentaerythritol Diacetals with Chiral Axes

The molecular structures of pentaerythritol diacetals with chiral axes were -elucidated- by 1D and 2D NMR techniques, including ¹H NMR, ¹³C NMR, DEPT, ¹H-¹H COSY, HSQC and HMBC. The chemical environment of the eight hydrogen atoms in the four methylenes were analyzed. The ¹H and ¹³C chemical shifts of 3, 3′-bis (2, 4-dichlorophenyl)-2, 4, 2′, 4′-tetraoxaspiro[5.5] undecane were assigned. The results should provide a basis for elucidating molecular structures of other pentaerythritol diacetals and diketals.