The invention relates to a method for preparing 1-ethylcyclohexyl
acrylate. The method comprises the following steps:
magnesium turnings are fetched, and a mixed liquid of
bromoethane and a reaction
solvent is dropped into the
magnesium turnings;
bromoethane is subjected to a reaction with the
magnesium turnings, such that a
Grignard reagent is prepared;
cyclohexanone is dissolved in
toluene, and the solution is dropped into the
Grignard reagent; when dropping is finished, a reaction is continued under a maintained temperature; when the
Grignard reaction is finished, the temperature of the
reaction system is reduced to 0-40 DEG C, and an acid-binding agent is added; a
dichloromethane solution of
propionyl chloride is dropped in, and an
esterification reaction is carried out; when dropping is finished, the reaction is continued for 1-5h under a temperature maintained at 10-70 DEG C, such that a reaction liquid is obtained; the reaction liquid is poured into water for
quenching; liquid separation is carried out; a water phase is extracted with
dichloromethane; organic phases are combined; washing and
drying are carried out, and the
solvent is removed, such that a crude product is obtained; a
polymerization inhibitor is added into a
distillation flask, and the crude product is subjected to reduced-pressure
distillation; and a distillate at a temperature of 98-100 DEG C under a pressure of 60Pa is collected, such that 1-ethylcyclohexyl
acrylate is obtained. The method provided by the invention has the advantages of high yield, low cost, simple preparation, and suitability for expanded production. With the method, a GC purity can reach 99.5%. The method has a good application prospect.