Ammonium Chloride → Benzoic acid, 4-amino-2-ethoxy-, ethyl ester

Participants

Reaction Conditions

Reaction Steps

To a solution of ethyl 2-ethoxy-4-nitro-benzoate (12.7 g, 53.1 mmol) in ethanol (94 mL) was added a solution of ammonium chloride (56 mL). The formation of a precipitate was observed. Iron (15.2 g, 271 mmol) was added and the reaction mixture was heated at 80° C. for 16 h. The reaction mixture was cooled and filtered through Celite, and the Celite was rinsed with methylene chloride. Water was added and the product was extracted three times with methylene chloride. The organic layers were dried over magnesium sulfate and concentrated. Purification of the crude residue by flash column chromatography (silica gel, eluting with 0-3% methanol in chloroform) gave ethyl 4-amino-2-ethoxy-benzoate as a tan solid (10.3 g, 99%).

Provenance & Evidence