The synthetic method is novel in the direct synthesis of amide surfactants by vacuum-amphoteric method without ringclosing reactions.
本发明方法不经过关环过程,创新性地采用真空―两性化法直接合成酰胺型表面活 性剂。
2
Ringclosing metathesis (RCM) of dienes to cycloalkene provides an important tool for C-C double bond formation catalyzed by metal carbene.
关环转换反应是形成碳碳双键的重要反应之一,即双烯化合物在金属碳烯催化下关环得到环烯类化合物。
3
The five quinazoline compounds were prepared by using 2 amino 4,5 dimethoxy benzoic acid as original material, which underwent ringclosing, halogenation and substitution.