An NMR Study on Pentaerythritol Diacetals with Chiral Axes

Abstract

Abstract:

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.

Key words: NMR, assignment, 2D NMR, 3, 3′-bis（2, 4-dichlorophenyl)-2, 4, 2′, 4′-tetraoxaspiro[5.5] undecane

CLC Number:

O641

SUN Xiao-Qiang- , YU Shu-Ling, YANG Yang, JIANG Wei-Hua, HUANG Hua-Yin, CHANG Li-Ping. An NMR Study on Pentaerythritol Diacetals with Chiral Axes[J]. Chinese Journal of Magnetic Resonance, 2009, 26(4): 534-540.

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