作者:G.J. Karabatsos、S.S. Lande
DOI:10.1016/s0040-4020(01)92599-2
日期:1968.1
Conformations and configurations were assigned to several N-Me imines and N-alkyl acetaldimines from analyses of their 60-Mc NMR spectra. All aldimines exist exclusively in the syn configuration. Interpretation of the vicinal and long-range (across 4 and 5 and bonds) spin-spin coupling constants of N-Me aldimines led to the conclusion that I and II are the minimum energy conformations of these compounds
通过对它们的60-Mc NMR光谱进行分析,将构象和构型分配给了几种N-Me亚胺和N-烷基乙二胺。所有醛亚胺仅以syn构型存在。N-Me Aldimines的邻位和远距离(跨4和5和键)自旋-自旋耦合常数的解释得出以下结论:I和II是这些化合物的最小能量构象。I⇌II的ΔH°值介于通常为负数的醛和为正数的肟及其O-甲基醚之间。N-烷基乙缩醛亚胺的长距离自旋-自旋偶合常数的解释(跨越4和5个键)得出以下结论:III比IV稳定得多。