Synthesis method of mono-substituted styrenated phenol

The invention discloses a synthesis method of monosubstituted styrenated phenol, which belongs to the technical field of monosubstituted styrenated phenol synthesis, and comprises the following steps: S1, firstly detecting raw materials, calculating the ratio of each material, and preparing materials according to the calculation result, S2, firstly putting phenol into a reaction kettle, adding a prepared catalyst, S3, dropwise adding styrene, and S4, carrying out heat preservation for 2-3 hours, thereby obtaining the monosubstituted styrenated phenol. The temperature in the reaction kettle is controlled between 80 DEG C and 120 DEG C through steam and circulating water, the reaction speed is controlled, S4, after styrene is dropwise added, heat preservation is conducted for 1 hour at the temperature of 120 DEG C, complete reaction is ensured, S5, a reaction terminator is added, and S6, a crude product is vacuumized and purified, unreacted raw materials and by-products are distilled out, and the remaining conc