Potassium Hydroxide → HCID 65425682, compound

Participants

Reaction Steps

4-Isopropyl-cyclohexanecarboxylic acid methyl ester (1.1 g, 6 mmol) was alkylated using a method analogous to General Procedure F using LDA (9 mmol) and iodoethane (1.4 g, 9 mmol) in THF (20 mL) at −78° C. to RT to produce 1-ethyl-4-isopropyl-cyclohexanecarboxylic acid methyl ester (1.0 g, 78% yield) as a mixture of isomers. Hydrolysis of this ester using KOH (12.5 mmol) in aqueous EtOH (1:1; 5 mL) at 150° C. for 2 hr in a pressurized vessel following a microwave method analogous to General Procedure G2 gave 1-ethyl-4-isopropyl-cyclohexanecarboxylic acid (800 mg, 86% yield) as a mixture of isomers after workup by evaporation of the solvent, treatment with aq 2 N HCl, extractive workup, and evaporation of the solvent.

Provenance & Evidence