反应详情

A solution of N-(2-hydroxymethyl-5-nitro-phenyl)-4-(3-pyridinyl)-2-pyrimidinamine (0.23 g, 0.71 mmol) in ethanol (230 mL) is hydrogenated at atmospheric pressure over Raney nickel (0.2 g) at 25° C.. The calculated amount of hydrogen is taken up in 13 h. The mixture is then filtered and the solvent is evaporated off under reduced pressure to yield the crude product which is purified by column chromatography on silica gel, eluent 25% aqueous ammonia-ethanol-dichloromethane (1:9:90), to give the title compound as a yellow crystalline solid, m.p. 213-215° C.

1. filtrationThe mixture is then filtered
2. customthe solvent is evaporated off under reduced pressure
3. customto yield the crude product which
4. customis purified by column chromatography on silica gel, eluent 25% aqueous ammonia-ethanol-dichloromethane (1:9:90)