Introduction to diethyl succinate
Diethyl succinate is the diethyl ester of succinate.
Production method
1. Prepared by acylation of ethanol and succinic acid; Or from ethanol and succinic acid in the presence of concentrated sulfuric acid, directly esterified in benzene solution.
2. Preparation: Add succinic acid to a reaction bottle equipped with a distillation device
(2)58g(0.5mol), anhydrous ethanol 82g(1.76mol), 180mL of benzene dried with sodium metal, one grain of zeolite,11mL of sulfuric acid. Heating reflux reaction for 8h. The reactant is poured into excess water to separate the organic layer, and the water layer is extracted twice with benzene. Combine organic layer, wash with a little water, and then wash with saturated sodium carbonate solution. Anhydrous sodium sulfate drying. Diethyl succinate was obtained by decompression fractionation at 80 ~ 83℃/400Pa
(1)75g with 85% yield.
use
1. Used as solvent, gas chromatography fixing liquid, food additive.
2. Play the role of fixing agent and solution in essence.
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