Benzoic acid, 2-iodo-, methyl ester → 4-Bromo-2-[(2-methoxycarbonyl-phenyl)amino]benzoic acid

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Reaction of methyl 2-iodobenzoate and 4-bromoanthranilic acid by the reported method [Rewcastle and Denny, Synth. Comm, 1987, 17, 309] gave 4-bromo-2-[(2-methoxycarbonyl-phenyl)amino]benzoic acid (70%), mp (MeOH/H2O) 218-219.5° C. 1H NMR [(CD3)2SO] δ 3.85 (s, 3 H, COOCH3), 7.08-7.12 (m, 2 H, 2×ArH), 7.50 (d, J=1.9 Hz, 1 H, H-3), 7.57 (d, J=3.8 Hz, 3 H, 2×ArH), 7.84 (d, J=8.4 Hz, 1 H, ArH), 7.93 (d, J=7.7 Hz, 1 H, ArH), 10.80 (s, 1 H, NH), 13.33 (br s, 1 H, COOH). Anal. (C15H12BrNO4) C, H, N.

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