Ammonia → 2-(3-Chloroanilino)4-[1-(2-acetamidoethyl)imidazol-5-yl]pyrimidine

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Reaction Steps

Acetic anhydride (0.58 μl, 1.0 mmol) was added to solution of 2-(3-chloroanilino)-4-[1-(2-aminoethyl)imidazol-5-yl]pyrimidine (Example 13; 0.30 g, 0.63 mmol) in pyridine (2 ml) at 0° C. The mixture was allowed to warm to ambient temperature and stirred for 2 hours. 7M Methanolic ammonia (0.5 ml) was added and the mixture diluted with EtOAc (10 ml). The precipitate was removed by filtration and the filtrate pre-absorbed on to silica gel and purified by column chromatography on silica gel eluting with DCM/2% methanolic ammonia (11:1) to give the title compound (88 mg, 39%) as a white solid. NMR 9.68 (s, 1H), 8.43 (d, 1H), 8.03-7.96 (m, 2H), 7.81 (s, 1H), 7.79 (s, 1H), 7.60 (dd, 1H), 7.33 (t, 1H), 7.12 (d, 1H), 6.98 (dd, 1H), 4.56-4.46 (m, 2H), 3.44-3.37 (m, 2H), 1.80 (s, 3H); m/z 357.

Provenance & Evidence