Preparation method of benzyl salicylate

The invention relates to the field of chemical engineering, and particularly discloses a preparation method of benzyl salicylate. The preparation method comprises the following steps: S1, uniformly mixing and stirring salicylate, benzyl chloride, sodium carbonate and a catalyst, and reacting for 5-6 hours at the temperature of 100-140 DEG C; the molar ratio of the salicylate to the benzyl chloride is (1.0-1.2): 1; the catalyst adopts a supported quaternary ammonium salt catalyst, and the dosage of the catalyst is 0.5-1.5% of the weight of the salicylate; the use amount of the sodium carbonate is 2-2.2% of the weight of the salicylate; and S2, filtering the product obtained in the step S1 to remove the precipitate and the catalyst, then carrying out reduced pressure distillation, and collecting fractions to obtain the product. According to the preparation method, the yield of benzyl salicylate is relatively high, the product purity is relatively high, and meanwhile, the preparation method is simple in step, re