Zeng Qing-youa
2008
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Journal
Journal of Qingdao University of Science and Technology
Abstract
Ethyl 3,4-dimethoxycinnamate was synthesized by veratraldehyde and diethyl malomate with the catalysis of L-proline/potassium phosphate in ethanol.The optimal reaction conditions were n(diethyl malomate)∶n(veratraldehyde)=2.0∶1.0,n(L-proline)∶n(veratraldehyde)=0.35∶1.00,n(L-proline)∶n(potassium phosphate)=6∶1,and reacting for 7 h,The yield of ethyl 3,4-dimethoxycinnamate was 77.4% with 97.0% purity.