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0 °C

To a stirred solution of 37 mg of 2-[(S)-1-phenylethylamino]-4-[5-aminobenzimidazol-1-yl]pyrimidine (EXAMPLE 79) in acetic acid (1.0 mL) was added NaNO2 (7.7 mg) in H2O (0.5 mL). The mixture was stirred 1 h at 0° C. Pyridine (1 mL) was added followed by CuCN (9.8 mg). Gas evolution was observed. The reaction mixture was poured into ethyl acetate and washed with water and brine. The organic layer was dried over MgSO4, filtered and concentrated. The product mixture was purified by silica gel chromatography eluting with a gradient solvent system of 100% CH2Cl2 going to 10% MeOH CH2Cl2 giving 18.3 mg of the title compound. Mass spectrum (ESI): 293.3 (M+1).

1. washwashed with water and brine
2. dry with materialThe organic layer was dried over MgSO4
3. filtrationfiltered
4. concentrationconcentrated
5. customThe product mixture was purified by silica gel chromatography
6. washeluting with a gradient solvent system of 100% CH2Cl2 going to 10% MeOH CH2Cl2 giving 18.3 mg of the title compound