Synthesis and NMR Analysis of Pentaerythritol Ketal with Chiral Axis

In the study 3,9-Dimethyl-3,9-bis-(4-nitro-phenyl)-2,4,8,10-tetraoxa-spiroundecane with Chiral Axis was synthesized,and characterized by IR,1H NMR,13C NMR,and elemental analysis was made.The 1H chemical shifts of title compound were also completely assigned by 2D NMR.