The reaction of imides and activated amides with phosphoranes provides a simple route to enamides, bis[alkenyl]amines, and enamines. Experiments to determine the scope and limitations of these reactions are summarised in this review. Some of the results are taken from investigations with other aims. As well as the dependance on structure, configurational and tautomeric aspects of the reaction are described. The Wittig alkenylation of the imides is compared with other methods of alkenylation. 1. Introduction 2. Wittig Alkenylation of Imides 2.1. General Comments 2.2. Non-Stabilised Phosphoranes 2.3. Ethoxycarbonylmethylenetriphenylphosphorane and Cyanomethylenetriphenylphosphorane 2.3.1. Open Chain Imides 2.3.2. Five-Membered Ring Imides: Phthalimides, Succinimides, and Maleimides 2.3.3. Six-Membered and Larger Ring Imides 2.3.4. Bicyclic N-Bridgehead Imides 2.3.5. N-Acylimides 2.4. Benzoylmethylenetriphenylphosphorane 3. Alkenylation of Imides with the Wittig-Horner Reagent 4. Alkenylation of Activated Amides 4.1. N-Sulfonyllactams 4.2. N-Acylpyrroles 5. Conclusions
酰亚胺和活化酰胺与
磷烯的反应为
酞胺、双[烯烃基]胺和烯胺提供了一条简单的合成路线。本文总结了确定这些反应的适用范围和局限性的实验结果。一些结果来自于其他目的的研究。除了对结构的依赖,本文还描述了反应的构象和互变异构方面。将
酰亚胺的Wittig烯基化与其他烯基化方法进行了比较。
1. 引言
2.
酰亚胺的Wittig烯基化
2.1. 一般评论
2.2. 非稳定
磷烯
2.3. 乙氧羰基亚甲基三苯基
磷烯和
氰亚甲基三苯基
磷烯
2.3.1. 开链
酰亚胺
2.3.2. 五元环
酰亚胺:邻苯二甲
酰亚胺、琥珀
酰亚胺和马来
酰亚胺
2.3.3. 六元及更大环
酰亚胺
2.3.4. 自环桥头N-桥联
酰亚胺
2.3.5. N-酰基
酰亚胺
2.4. 苯甲酰基亚甲基三苯基
磷烯
3. 使用Wittig-Horner试剂对
酰亚胺进行烯基化
4. 活化酰胺的烯基化
4.1. N-磺酰亚乳胺
4.2. N-酰基
吡咯
5. 结论