反应详情

The product of Example 52D (1.30 g, 5.60 mmol) and 5-bromo-2-chloro-3-methylpyridine (1.73 g, 8.39 mmol) were processed according to the procedure described in Example 1E. The crude product was purified by chromatography (SiO2, ethyl acetate:hexane, 1:1) to provide the title compound (0.22 g, 11% yield) which was used directly in the next step without further purification. MS (DCI/NH3) m/z 358, 360 (M+H)+.

1. customThe crude product was purified by chromatography (SiO2, ethyl acetate:hexane, 1:1)