By means of the dipole moments of several imidic acid esters the conformation at the CO bond and the configuration at the CN bond have been determined. Use was made of the graphical comparison of a phenyl-derivative with the para-substituted analogue [7] in combination with cyclic model compounds having forced stereochemistry. The results obtained are conclusive for the N-alkyl-derivatives which are
借助于几种亚
氨酸酯的偶极矩,已经确定了在CO键处的构象和在CN键处的构型。进行了对苯基衍
生物与对位取代类似物[7]与具有强制立体
化学的环状模型化合物的图形比较。获得的结果是结论性的N-烷基衍
生物,其是在小伊形式A.它们在氮未取代的亚
氨酸酯是prevailingly在相同的eap构象A; 另一个构象,可能是Zap形式B,也可以少量存在。