Ring closing metathesis (RCM) of dienes to cycloalkene provides an important tool for C-C double bond formation catalyzed by metalcarbene.
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。
2
N-heterocyclic carbenemetal complexes have catalytic activities for many organic reactions, and they are a type of catalyst with potential value.
杂环卡宾金属络合物对许多反应有催化作用，它们是一类有潜在应用价值的催化剂。
3
The invention discloses a cyclic n-heterocyclic double-carbenemetal complex which is connected through alkyl chain, a preparation method and the application.