The heterocyclic ring of 4-substituted-1,8-naphthalimides is NOT inert to nucleophilic attack, contrary to earlier reports
作者:Ryan K. McKenney、Leah L. Groess、Kyle M. Kopidlansky、Kelsey L. Dunkle、David E. Lewis
DOI:10.1039/c3ob40639c
日期:——
heterocyclic ring of N-aryl-4-chloro-1,8-naphthalimides, reported to be resistant to nucleophilic attack, reacts with primary amine nucleophiles at room temperature to give 4-chloro-N-alkyl-1,8-naphthalimides. The reaction is first order in the naphthalimide. The Hammett plot is linear (R2 0.996) with a large positive slope (+3.0), consistent with substantial negative charge development at nitrogen in the
据报道具有抗亲核攻击性的N-芳基-4-氯-1,8-萘二甲酰亚胺的杂环在室温下与伯胺亲核试剂反应,得到4-氯-N-烷基-1,8-萘二甲酰亚胺。该反应在萘二甲酰亚胺中是一级的。哈米特图是线性的(R 2 0.996),具有大的正斜率(+3.0),与活化的配合物中氮上的大量负电荷形成一致。