High resolution 1H NMR spectra of two 1,1'-binaphthols (I, II), two 1,1'-binaphthalenediols (III, IV) and four 1,1'- binaphthalenediols acetates (IIIa - IVa) were obtained and analyzed. The effect of the ring current was evaluated by comparing the chemical shifts of the compounds, assigned through H-H COSY NMR experiments, to those of the corresponding monomers. All experimental chemicals shifts are in close agreement with the theoretical values obtained via the Bovey model for the ring current effect of a benzene moiety.
两种1,1'-联萘酚(I,II),两种1,1'-联萘二酚(III,IV)和四种1,1'-联萘二酚乙酸酯(IIIa-IVa)的高分辨率1H NMR光谱被获得并分析。通过比较这些化合物的化学位移,通过H-H COSY NMR实验进行分配,来评估环电流的影响,并与相应单体的化学位移进行比较。所有实验化学位移与通过Bovey模型获得的苯环电流效应的理论值非常接近。