中文摘要：

以咖啡酸和丙醇为原料,对甲苯磺酸作催化剂,在不加入其他溶剂的条件下,酯化合成咖啡酸丙酯.得到最优反应条件为：咖啡酸和丙醇物质的量的比1∶10,反应温度90℃,催化剂添加量为0.1%（以咖啡酸物质的量计）,分子筛加入量为0.2%（以咖啡酸的质量计）,反应时间为6h,咖啡酸的转化率达到98.06%,咖啡酸丙酯的产率达到94.71%.

英文摘要：

Propyl caffeate was synthesized using caffeic acid and propanol as starting materials, p-toluenesulfonic acid as catalyst without adding other solvents. The highest conversion （98.06%） of caffeic acid and the highest yield （94.71%） of propyl caffeate were achieved under the optimum conditions as follows： molar ratio of caffeic acid to propanol 1：10, reaction temperature 90 ℃ , catalyst amount 0.1% （calculated by the molar weight of caffeic acid）, molecular sieve amount 0.2% （calculated by the mass of caffeic acid）.