Atropisomeric Properties of 5N‐Benzoyl‐1,5‐benzodiazepin‐2‐ones: Substituent Effects on Rotation around the Ar–N(CO) Axis
作者:Kaoru Funaki、Hidetsugu Tabata、Hiromi Inyaku、Mizuki Mori、Tomohiko Tasaka、Hideyo Takahashi、Hideaki Natsugari、Tetsuta Oshitari
DOI:10.1002/ejoc.202400343
日期:——
Atropisomeric properties of 5N-benzoyl-1,5-benzodiazepin-2-one with two Ar−N(CO) axes moving like gears were investigated. The rotational barrier (ΔG≠) of the axes was strongly influenced by the electronic effect of the p-substituent on benzoyl, and the electron-withdrawing group (EWG) increased the stability of the axes. The ΔG≠ values were linearly correlated with the electronic effect (the Hammett
研究了具有两个像齿轮一样移动的 Ar−N(CO) 轴的 5N-苯甲酰基-1,5-苯二氮卓-2-酮的阻转异构性质。轴的旋转势垒(ΔG ≠ )受到苯甲酰基上p-取代基的电子效应的强烈影响,吸电子基团(EWG)增加了轴的稳定性。 ΔG ≠ 值与官能团的电子效应(Hammett σ 常数)线性相关。