水杨酸戊酯的催化合成

Study on Catalytic Synthesis of Amyl Sallcylate

以对甲苯磺酸为催化剂，通过水杨酸和戊醇酯化反应合成水杨酸戊酯、研究了催化剂用量、酸醇物质的量比以及反应时间等因素对水杨酸酯化率的影响．实验结果表明，对甲苯磺酸是合成水杨酸戊酯的良好催化剂．在酸醇物质的量比为1：1．6，催化剂用量为6％，带水剂甲苯10mL，反应时间5h，反应温度120～140℃的条件下，水杨酸的酯化率可达94．1％．

Amyl salicylate was synthesized from salicylic acid and amy[ alcohol using p-toluene sulphonlc acid as catalyst. The results showed that p-toluene eulphonic acid was a good catalyst for synthesizing amyl salicylate. The yield of amyl salicylate was up to 94.1% when was 6 %, water-carrying agent toluene was molar ratio of salicylic acid to amyl alcohol was 1 ： 1.6, amount of catalyst 10 mL,reaction time was 5 h,and reaction temperature was 120 ～140℃.