Synthesis method of single-menthyl

The invention relates to a synthesis method of single-menthyl, which belongs to a preparation method of single-menthyl dicarboxylate. The invention uses menthol and saturated cyclic acid anhydride as raw materials, uses some organic base, inorganic Lewis acid or a mixture thereof as catalysts, and uses hydrocarbon compounds with high boiling points or a mixture thereof as reaction solvents for preparing the single-menthyl through heating. The method has the advantages of short reaction time, low production cost and high yield.