Sodium Hydroxide → 4-(2-Fluorophenyl)-7-morpholino-9H-pyrido[3,4-b]indole-1-carboxylic acid

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Reaction Steps

To a solution of ethyl 4-(2-fluorophenyl)-7-morpholino-9H-pyrido[3,4-b]indole-1-carboxylate (94 mg, 0.224 mmol) in MeOH (5 mL) at room temperature was added 1N sodium hydroxide solution (1.121 mL, 1.121 mmol). The mixture was heated at reflux for 1 hr and then concentrated under vacuum. To the residue was added water (20 mL), and the resulting mixture was neutralized with 1 N HCl solution to pH 5. The precipitating product (68 mg, 0.172 mmol, 77% yield) was collected as a tan solid by suction filtration and dried at 50° C. under vacuum.

Provenance & Evidence