Sodium Hydroxide → 3-Acetyl-1-(2-chlorobenzyl)-2-propylindole-6-carboxylic acid

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Reaction Steps

To a solution of methyl 3-acetyl-1-(2-chlorobenzyl)-2-propylindole-6-carboxylate (125 mg) in ethanol (6 ml) was added 1N aqueous sodium hydroxide (0.7 ml), and the mixture was stirred under reflux for 1 hour. The resulting mixture was evaporated in vacuo, and the residue was acidified with 1N hydrochloric acid (0.75 ml) and extracted with ethyl acetate. The extract was washed with brine, dried over sodium sulfate and evaporated in vacuo. The residue was triturated with isopropyl ether to give 3-acetyl-1-(2-chlorobenzyl)-2-propylindole-6-carboxylic acid (78 mg) as solid.

Provenance & Evidence