Stereoelectronic suppression and a remarkably low effective concentration for a cyclization to a benzo-fused five-membered ring
作者:James F. King、Joe Y. L. Lam、Stanis?aw Skonieczny
DOI:10.1039/c39880000147
日期:——
The cyclization of o-chloromethylbenzylamine to dihydroisoindole has an effective concentration of 8.3 M(in CD3OD at 21 °C); this very low value for a cyclization to a benzo-fused five-membered ring is ascribed to lessened conjugation in the transition state as compared to that of the model reaction, and is relevant to both the synthesis of rings and the application of effective concentrations in obtaining
邻氯甲基苄胺环化成二氢异吲哚的有效浓度为8.3 M(在21°C的CD 3 OD中);与模型反应相比,这种非常低的环化成苯并稠合五元环的值归因于过渡态共轭的减少,并且与环的合成和有效浓度的应用有关。获得机制的证据。