Menthol can be synthesized from different compounds as given below-

Synthesis of Menthol

Menthol can be synthesized from m-Cresol as given below-

Menthol can be synthesized from Myrcene as given below-

Menthol can be synthesized from Cytronellal as given below-

Natural menthol is obtained by freezing peppermint oil. The resultant crystals of menthol are then separated by filtration.

Synthesis of Menthol from m-Cresol

The (±)-Menthol is resolved by means of phthalic acid.