反应详情

70 mg (0.45 mmol) of 4-chloro-benzoic acid 170 mg (0.45 mmol) of HBTU in a mixture of 3 ml of DMF and 1 mL of DIEA was reacted with 100 mg (0.4 mmol) of 2-amino-3H-benzoimidazole-4-carboxylic acid (1H-imidazol-2-yl)-amide synthesized above as described in general procedure A and 2-(4-chloro-benzoylamino)-1H-benzoimidazole-4-carboxylic acid (1H-imidazol-2-yl)-amide (30 mg, 17.24%) was isolated. LCMS: 382 (M+1)+. 1H NMR (DMSO-d6, 400 MHz): δ 11.99 (d, 1H), 8.16 (d, 2H), 7.94 (d, 1H), 7.70 (dd, 3H), 7.30 (t, 1H), 6.81 (d, 2H) ppm.

1. customsynthesized above