催化酯交换合成顺-3-水杨酸己烯酯的研究

Study on the Synthesis of Cis-3-Hexenyl salicylate by Catalyzed Transesterification

采用K_2CO_3/γ-Al_2O_3固体碱为催化剂,以水杨酸甲酯和顺-3-己烯醇为主要原料经催化酯交换合成了顺-3-水杨酸己烯酯。考察了催化剂用量、醇酯比、反应温度和时间以及催化剂重复使用次数对反应收率的影响,结果表明K_2CO_3/γ-Al_2O_3固体碱对本反应有较高的催化活性,在优化工艺下反应收率可达87%以上,催化剂经回收处理后可重复使用。

Cis-3-Hexenyl salicylate was synthesized with K2CO3/γ-Al2O3 solid base alkali as catalyst and methyl salicylate and cis -3 -hexenol as the main raw materials by catalyzed transesterification.The effects of catalyst amount,the molar ratio of alcohol to ester,reaction temperature and time and times of reuse the catalyst on the reaction yield have been investigated. The results show that the K2CO3/γ-Al2O3 solid base alkali has high catalytic activity in the reaction, and the yield of the reaction is over 87%under the optimal process.The catalyst can be reused after recycling.