摘要
以对羟基苯甲酸和氯化苄等为原料,以十六烷基溴化铵为相转移催化剂合成对羟基苯甲酸苄酯。通过实验考察了催化剂用量及物料配比等因素对酯化反应的影响。结果表明:微波辐射功率350W,辐射时间3min,n(对羟基苯甲酸)∶n(氯化苄)=1∶2,n(正十六烷基三甲基溴化铵)∶n(对羟基苯甲酸)=0.025,产率可达96.7%。
Benzyl 4-hydroxybenzoate is directly synthesized by 4-hydroxybenzoate and benzyl chloride under microwave Irrad- Iation and In presence of phase transfer catalyst In alcohol, experimental results show that n(to the hydroxyl benzoic acid)/n (chlorinebenzyl) = 1 .-2, n(CTMAB)/n( 4-hydroxy benzoic acid)= 0. 025, microwave radiation power is for 350W, irradiation time is 3 min, and the yield of the ester is 96.7% respectively.
出处
《衡阳师范学院学报》
2007年第6期105-107,共3页
Journal of Hengyang Normal University
基金
湖南科技学院科研资助项目(湘科院院字[2004]36号)
关键词
微波辐射
相转移催化
对羟基苯甲酸
氯化苄
对羟基苯甲酸苄酯
microwave irradiation
phase transfer catalyst
benzyl chloride
4-hydroxy benzoic acid
benzyl 4-hydroxy benzoate