双键

Compared with diolefine rubber,EPDM has less double bond.

与二烯橡胶相比,EPDM的双键很少。

Ring closing metathesis (RCM) of dienes to cycloalkene provides an important tool for C-C double bond formation catalyzed by metal carbene.

关环转换反应是成碳碳双键的重要反应之一,即双烯合在金属碳烯催下关环得到环烯类合。

Ethyl phenylacrylate intermediate bringing a double bond was introduced first,which is subsequently transformed into triketone and then DCM was obtained with high purity.

采用具有烯骨架的β-苯基丙烯酯为中间体先引入双键,再经过三酮合环制备乙烯基吡喃。

Interestingly, in spite of its instability, the O3 molecule can be stabilized as an ozonide between the double bonds of a monounsaturated fatty acid such as oleic acid.

有趣的是，尽管不稳定，超氧O3分子却能以双键结合安定于像油那样的单元不饱和脂成超氧O3。