Bromine → 2-Amino-5-bromo-3-methoxybenzoic acid

Participants

Reaction Steps

To a 0.24 M chloroform solution of 2-amino-3-methoxybenzoic acid (4, 11.87 g, 71.7 mmol) at 0° C. was added bromine (1.08 eq. 0.31 M) in chloroform dropwise. The mixture was warmed to room temperature and stirred under argon for 16 hours. The resulting precipitate was collected by filtration and washed thoroughly with chloroform. The crude material was dried in vacuo to give the title as an HBr salt in 99% yield. ES/MS m/z 248/250 (MH+).

Provenance & Evidence