ADDITION OF ACETONITRILE ANIONS TO UNSATURATED SYSTEMS UNDER ULTRASONICALLY DISPERSED POTASSIUM SYSTEM
作者:Yang Gao、Hui Wang、Minghua Xu、Hongzhen Lian、Yi Pan、Yaozeng Shi
DOI:10.1080/00304940109356599
日期:2001.8
%Amino-/.%arylacrylonitriles are commonly prepared by the nucleophilic addition reaction of acetonitrile anion, prepared by in-situ deprotonation of acetonitrile, to aromatic nitriles. As acetonitrile is a very weak acid (pKa = 31.3)", strong bases such as r-BuOK'? or NaNH2 are The nucleophilic reactions usually give poor yields and require long reaction times (at least 10 hrs). Application of Ultrasonically
本工作中的 UDP 系统很容易通过在萘存在下对甲苯中的钾悬浮液进行超声辐照来获得。作为一种强电子受体,萘可有效促进钾的分散。25 反应按预期顺利进行(方案 I)。结果总结在表1和2中。