Benzamide → Anthranilamide

Participants

Reaction Steps

Methyl 5-chloro-2-nitrobenzoate (1) is reacted with an appropriately-substituted phenol (2) and base such as potassium carbonate in a solvent such as NMP to form the corresponding phenoxy-2-nitro-benzoic acid methyl ester (3). Compound (3) is hydrolyzed upon treatment with basic solution such as NaOH in water/MeOH to provide benzoic acid (4). Benzoic acid (4) is treated with thionyl chloride in solvent such as DMF to provide an intermediate acid chloride, which upon treatment with NH4OH in solvent such as THF provides benzamide (5). The nitro-benzamide (5) can be hydrogenated in solvent such as EtOH to provide amino-benzamide (6).

Provenance & Evidence