摘要
以3,4,5-三甲氧基苯甲醛和丙二酸二乙酯为主要原料,甘氨酸为催化剂,经水解、酸化和Knoevenagel缩合反应一锅法合成了标题化合物。反应条件为:250 mmol 3,4,5-三甲氧基苯甲醛,n(3,4,5-三甲氧基苯甲醛)∶n(丙二酸二乙酯)∶n(甘氨酸)=1.0∶1.6∶0.25,无水乙醇100 mL,回流反应8 h,收率86.7%。
Ethyl (E) -3-( 3,4,5-trimethoxyphenyl ) acrylate in yield of 86. 7% was synthesized by Knoevenagel condensation from 3,4, 5-trimethoxybenzaldehyde and diethyl malomate using Glycine as a catalyst and ethanol as a solvent. The ap-propriate reaction conditiongs at reflux for 8 h were as fol-lows :3,4,5-trimethoxybenzaldehyde was 250mmol, n( 3,4,5- trimethoxybenzaldehyde) : n ( diethyl malomate) : n ( Glycine ) = 1.0: 1.6:0. 25,ethanol was 100 mL.
出处
《化学试剂》
CAS
CSCD
北大核心
2013年第11期1037-1038,共2页
Chemical Reagents