For the formation of the correspondent chloride, the same procedure was used as that in example 2, except that 4-(3-chloro-phenyl)-6-[(5-chloro-pyridin-2-yl)-hydroxy-(3-methyl-3H-imidazol-4-yl)-methyl]-1-methyl-1H-quinolin-2-one (55 mg, 0.112 mmol) was used in the place of 4-(3-chloro-phenyl)-6-[(6-chloro-pyridin-3-yl)-hydroxy-(3-methyl-3H-imidazol-4-yl)-methyl]-1H-quinolin-2-one. The obtained chloride was dissolved in DMF (8 ml). To this solution were added potassium carbonate (K2CO3) and cyclopropylamine (0.049 ml, 0.786 mmol). The reaction mixture was stirred at ambient temperature for 15 hours after which time it was partitioned between CHCl3 and water. The organic layer was washed with brine, dried over MgSO4 and concentrated under vacuum to give the crude product. It was chromatographed on silica gel with MeOH—CHCl3—NH4OH (2:98:0.2 to 5:95:0.5) as eluents to afford the title compound as a white solid (19 mg, 0.036 mmol, 32% yield).
