<正>将微波辐射应用到莰烯与醇加成反应中,以提高其反应速率。笔者研究了微波辐射下用对甲苯磺酸作催化剂时莰烯与醇在密闭反应罐中的反应,探讨了微波功率、辐射时间及醇的种类对反应的影响,并与普通加热条件下的反应进行比较。结果表明,莰烯与丙醇在700W功率的微波辐射下反应30min,异龙脑基丙醚的含量达59.0%,微波辐射下,莰烯与醇加成反应的速率大大提高;增大微波辐射功率,反应速率加快;空间位阻大的醇不利于反应的进行。

Acidcatalyzed additional reactions of camphene with alcohols were investigated in the airtight pot reactor heated by microwaves in order to reduce the reaction time in the conventional heating conditions.The additional reaction was catalyzed with ptoluenesulfonic acid.The results indicated that microwave irradiation could enhance greatly the rate of these reactions compared with conventional heating conditions.Reaction times were reduced from 15~30 h using conventional conditions,to 30 min by microwave dielectric heating.Content of isobornyl propyl ether in the reactant was 59.0% using microwave dielectric heating.While the branches of alcohols decreased the reaction rate because of the spatial obstruct.The methodology simplified the procedure and overcame the drawbacks resulting from the long reaction times required under conventional heating conditions.