2-Chlorobenzimidazole → 4-[4'-(1H-Benzimidazol-2-ylamino)-1,1-biphenyl-4-yl]-2,2-dimethyl-4-oxobutanoic acid

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This compound was prepared from methyl 4-(4′-amino-1,1′-biphenyl-4-yl)-2,2-dimethyl-4-oxobutanoate (64 mg, 0.21 mmol) and 2-chloro-1H-benzimidazole (37.6 mg, 0.25 mmol) in a similar manner to the method described for 4-[4′-(1,3-benzothiazol-2-ylamino)-1,1′-biphenyl-4-yl]-2,2-dimethyl-4-oxobutanoic acid, providing 40.7 mg (48%) of the desired product. 1H NMR (400 MHz, DMSO-d6) δ 12.00 (br s, 1 H), 11.05 (br s, 1 H), 8.05 (d, 2 H), 7.85 (m, 4 H), 7.65 (d, 2 H), 7.40 (m, 2 H), 7.10 (m, 2 H), 3.35 (s, 2 H), 1.25 (s, 6 H). LC-MS m/z 414.3 (MH+), ret. time 2.27 min.

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