In Problem 4.26 you were asked to draw the preferred conformation of menthol on the basis of the information that menthol is the most stable stereoisomer of 2-isopropyl-5-methylcyclohexanol. We can now completely describe (+)-menthol structurally by noting that it has the R configuration at the hydroxyl-substituted carbon.
(a) Draw or construct a molecular model of the preferred conformation of (+)-menthol.
(b) (+)-Isomenthol has the same constitution as (+)-menthol. The configurations at C-1 and C-2 of (+)-isomenthol are the opposite of the corresponding stereogenic centers of (+)-menthol. Write the preferred conformation of (+)-isomenthol.