​1. Alcohol exchange method is currently used in the fragrance industry to produce benzyl benzoate. Alcohol exchange with ethyl benzoate and benzyl alcohol.
2. Ethyl benzoate and benzyl alcohol are transesterified, washed with water, layered, dried and distilled to obtain the product. Or it can be obtained by condensation of benzaldehyde.
Refining method: It often contains impurities such as free acids and alcohols. When refining, it is washed with sodium bicarbonate or sodium carbonate, dried with anhydrous potassium carbonate or sodium sulfate, and then distilled.
3. The reaction formula of the process is:

add sodium hydroxide and water into a three-necked flask, dissolve and then add benzoic acid, after heating to dissolve, add benzyl chloride dropwise, and reflux at 106°C for 4H. Cool slightly, separate the ester layer, wash with water, wash with alkali, and then distill under reduced pressure to obtain the finished product.
4. Use magnesium oxide as a catalyst, and use benzyl alcohol and methyl benzoate to carry out transesterification reaction at about 200°C.
2.
Benzyl benzoate naturally exists in Peru balsam, tuberose, carnation and tolu balsam, etc. It is usually produced by chemical synthesis in industry.
Add 7g (0.07mol) benzyl alcohol to a 100mL round bottom flask, add 0.3g (0.013mol) sodium metal to dissolve in it within 30min, heat and dissolve it, and slowly add 45.4g (0.43mol) benzaldehyde after cooling to room temperature 250mL three-necked bottle. The mixture is exothermic due to the reaction, and is cooled with water so that the temperature does not exceed 50-60°C. After about 30 minutes, when the temperature stopped rising, the reaction was continued for 1 hour by heating in a water bath. After the reactant was cooled, use 40mI. Wash with water 2 times. The obtained oil was distilled under reduced pressure, and benzyl alcohol, unreacted benzaldehyde and a small amount of water were first distilled off, and then the fraction at 184-185°C (2kPa) was collected to obtain about 40g of the product.
2C6H5CHO→C6H5COOCH2C6H5
benzyl alcohol and ethyl benzoate are transesterified in the presence of sodium carbonate. After the reaction is completed, the ethanol is removed by distillation at atmospheric pressure, and then the benzyl alcohol is removed by distillation under reduced pressure. After cooling, wash with water, separate layers, dry, and distill under reduced pressure to obtain the product.
C6H5COOCH2CH3+C6H5CH2OH[Na2CO3]→C6H5COOCH2C6H5+CH3CH2OH
is formed by co-thermal esterification of sodium benzoate and benzoyl chloride in the presence of triethylamine.
Under the condition of stirring and cooling, dissolve sodium in benzyl alcohol, then slowly add benzaldehyde, heat on a water bath for 1-2 hours after the effect is complete, separate the precipitated oil layer, wash and fractionate to obtain it.
Benzyl alcohol and benzoic esterification.
It can be obtained by transesterification of methyl (b) benzoate with sodium carbonate as a catalyst and benzyl alcohol after fractional distillation.
Sodium benzyl alkoxide is reacted with benzaldehyde by heating, or sodium benzoate is reacted with benzyl chloride. In the perfume industry, ethyl benzoate and benzyl alcohol are also used for transesterification.