合成实验肉桂酸的改进

An improve improved synthesis of cinnamic acid

用氟化钾作催化剂,对肉桂酸的合成工艺进行了改进研究,最佳反应条件以氟化钾为催化剂,苯甲醛∶乙酐=1∶2,反应时间1h,反应温度为150～170℃,收率可达74.5%,降低了反应温度,缩短了反应时间,提高了产率。

Syethesis of cinnamic from benzaldehyde and acetic anhydride was improved by using anhydrous potassium fluoride instead of potassium acetate.The optimum condition was n （C6H5CHO）：n （Ac2O）=1：2, reaction time lh and tempreture 150-170℃.The yield reached to 74.5%.By use of the method,the reaction time was shorter, the reaction tempeture was lower and the yieid was increased.