松油烯与马来酸酐的环加成反应的条件研究

Study on Cycloaddition between Terpinene and Maleic Anhydride

摘要: 研究了松油烯与马来酸酐的Diels-Alder环加成反应和松油烯的异构转化率.使用相对于α-松油烯过量的马来酸酐,在65～70℃、100～105℃和135～140℃时α-松油烯的异构转化率分别为 15%、38% 和 69%.采用异核远距离关联(HMBC)等核磁共振测试手法解析了环加成产物的结构,归属了各原子的化学位移.

Abstract: Diels-Alder cycloaddition between terpinene and maleic anhydride was studied.Meanwhile isomerization conversion was studied.With excessive amount of maleic anhydride,the percent conversions of isomerization were:15%,38% and:69% at temperature rangs of 65-70℃, 100-105℃ and 135-140℃, respectively.The structure of cycloaddition product was charac-terized by NMR spectra of HMBC.