Ethyl benzoate, C9H10O2, is an ester formed by condensation of benzoic acid and ethanol. It is a colorless liquid, almost insoluble in water, but miscible with most organic solvents. Like many volatile esters, ethyl benzoate has a pleasant odor and has been described as sweet, wintergreen, fruity, medicinal, cherry, fish, and grape. It is an ingredient in some spices and artificial fruit flavors.
Found in a variety of fruits, such as apples, bananas, and sweet cherries, but also in milk, butter, wine, black tea, bourbon vanilla, and fruit brandy. Like many volatile esters, ethyl benzoate has a pleasant odor. It's an ingredient in some artificial fruit flavors. Ethyl benzoate is an ester formed by condensation of benzoic acid and ethanol. It is a colorless liquid, almost insoluble in water, but miscible with most organic solvents.
The invention discloses a preparation method for ethyl benzoate. The method includes the following steps: add benzoic acid, anhydrous alcohol, modified clay and water-carrying agent into the reaction vessel with water separator, install the water separator, reflux condenser and thermometer on the reaction vessel, heat the reflux to separate water, react to no water drops, cool to room temperature, after 20min, remove the water layer, wash the reaction solution with water, dry, distillation, and so on. The upper fraction was steamed and the product was obtained by collecting the 101-103℃ fraction. The modified clay used in the invention is used as a solid acid catalyst to increase the conversion rate of electrified materials from below 95% to above 99.5%. The preparation method can avoid the problem of waste liquid discharge caused by the addition of sodium carbonate to neutralize excess acid in liquid catalyst technology.
Preparation method of ethyl benzoate
Field of Technology
The invention relates to the technical field of organic synthesis, in particular to a preparation method of ethyl benzoate.