【摘要】 研究了松油烯与马来酸酐的分子间Diels-Alder环加成反应和松油烯的异构转化行为。使用相对于α-松油烯过量的马来酸酐,相对于α-松油烯而言,在65～70℃时有大约15%,在100～105℃下有38%,在135～140℃时有69%的松油烯异构转化率。同样在65～70℃和100～105℃温度下,矾土、活性白土、硅胶、离子交换树脂、对甲基苯磺酸催化下,大约有20%～77%的异构转化率。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。更多还原

【Abstract】 The Diels-Alder reaction of terpinenes and maleic anhydride and isomerization action of Terpinene is studied.When More Maleic anhydrides than alpha-terpinene were used,the rate of isomerization were 15%,38% and 69% as against alpha-terpinene at 65～70℃,100～105℃ and 135～140℃,respectively.Presence of alumina,activated clay,acidic ion exchange resin,silica gel,and p-Toluenesulfonic acid catalyst,the rate of isomerization were 20%～77% at 65～70℃ and 100～105℃.The structure of the addition product was belonged by the HMBC spectral data.更多还原