Hydrochloric Acid → HCID 23152706, compound

Participants

Reaction Steps

To a suspension of methyl 2-(2-amino-4-chlorophenyl)-3-cyclohexyl-1-(2-ethoxycarbonylethyl)-1H-indole-6-carboxylate (1.05 g, 2.17 mmol) in tetrahydrofuran (11 ml) and methanol (11 ml) was added 4N aqueous sodium hydroxide solution (1.08 ml, 4.34 mmol), and the mixture was stirred for 2 hr. 2N Hydrochloric acid (2.2 ml) and water were added to the reaction mixture and the mixture was extracted with ethyl acetate. The organic layer was washed with saturated brine and dried over anhydrous magnesium sulfate. After filtration, the solvent was evaporated under reduced pressure to give methyl 2-(2-amino-4-chlorophenyl)-1-(2-carboxyethyl)-3-cyclohexyl-1H-indole-6-carboxylate (949 mg) as a crude product. The obtained crude product was used for Step 4 without further purification.

Provenance & Evidence