反应详情

A mixture of 3-[4-(benzyloxy)phenyl]-7-methyl-1-(1-methylethyl)-1,3-dihydro-2H-imidazo[4,5-b]pyridin-2-one (215 mg) and 10% Pd—C (30.6 mg) in EtOH (10 mL) was hydrogenated under balloon pressure at room temperature for 1 h. The catalyst was removed by filtration and the filtrate was concentrated in vacuo to give 3-(4-hydroxyphenyl)-7-methyl-1-(1-methylethyl)-1,3-dihydro-2H-imidazo[4,5-b]pyridin-2-one as a colorless solid. To a solution of this solid in DMF (10 ml) were added sodium hydride (27.8 mg) and 3-methyl-2-(methylsulfonyl)-3H-imidazo[4,5-b]pyridine (164 mg) at 100° C. The mixture was heated at 180° C. for 30 min under microwave irradiation. The precipitate was collected by filtration and washed with AcOEt and MeOH to give the title compound (175 mg) as colorless crystals.

1. customThe catalyst was removed by filtration
2. concentrationthe filtrate was concentrated in vacuo