关键词: 降冰片烯, 狄尔斯-阿尔德反应, 环戊二烯, 乙烯

Abstract: Despite a large number of patents and scienti?c papers about norbornene synthesis in the last 70 years，a systematic review is lacking. Firstly，the synthesis of norbornene through the Diels-Alder reaction of (di)cyclopentadiene with ethylene is introduced，and the processes of elevated temperature and pressure to enhance the reactivity of ethylene are commented. Reaction heat and side reactions are listed. According to the characteristics of norbornene synthesis of high pressure/temperature and immense amount of reaction heat release，reaction kinetics which provides reference to controlling the degree of reaction is summarized for the safety of production technology. Moreover，the development of synthesis processes is reviewed，and the advantages and disadvantages of liquid phase process and gas phase process are compared. The gas phase processes could reduce side reactions，but low yield limits its wide use. At present，the liquid phase process is still a mainstream technology for synthesis of norbornene. At last，the design of reactors with special structure to enhance mixing of reaction process could be a key issue of future study.

Key words: norbornene, Diels-Alder reaction, cyclopentadiene, ethylene