<正>以工业级二聚环戊二烯和马来酸酐为原料合成了内亚甲基四氢邻苯二甲酸酐。探讨了该产物的合成工艺，研究了二聚环戊二烯与马来酸酐的反应规律，考察了反应温度、反应时间、原料配比、溶剂种类及用量等对产物得率及纯度的影响，确定了适宜的工艺条件，测定了产物的红外光谱和核磁共振谱，证实了其结构，为实现工业化生产及进一步研究、开发和利用提供了可靠的依据。

Nadic anhydride was synthesized by the reaction of maleic anhydride with cyclopentadiene obtained from the cleavage of dicyclopentadiene.Suitable synthesizing conditions were determined by examining the effects of reaction temperature and time,the ratio of maleic anhydride to cyclopentadiene,the different solvents and their dosage on the yield and melting point of the products.The structure of the product was also discussed by IR and HNMR of the product.Reliable information was provided for industrial production.