Water → HCID 24852342, compound

Participants

Reaction Steps

LAH (1 mg) was added to a solution of 1-(4-fluorophenyl)-3-{(E)-2-[3-methoxy-4-(4-methyl-1H-imidazol-1-yl)phenyl]vinyl}-5,6-dihydroimidazo[5,1-c][1,4]oxazin-8-one (5 mg) in THF (1 mL), and the reaction solution was stirred at room temperature for 30 minutes. Water (0.01 mL), a 5 N sodium hydroxide solution (0.01 mL), water (0.03 mL) and methanol (5 mL) were sequentially added to the reaction solution. The suspension was filtered through celite, and the filtrate was concentrated under reduced pressure. p-Toluenesulfonic acid monohydrate (6 mg) was added to a solution of the resulting residue in toluene (5 mL) and DMF (1 mL), and the reaction solution was stirred at 120° C. for 2.5 hours. The reaction solution was left to cool to room temperature. Then, ethyl acetate and saturated sodium bicarbonate water were added to the reaction solution, and the organic layer was separated. The resulting organic layer was dried over anhydrous magnesium sulfate and then concentrated under reduced pressure. The residue was purified by silica gel column chromatography (carrier: Chromatorex™ NH; elution solvent: ethyl acetate→ethyl acetate:methanol=5:1) to obtain 1 mg of 1-(4-fluorophenyl)-3-{(E)-2-[3-methoxy-4-(4-methyl-1H-imidazol-1-yl)phenyl]vinyl}-5,6-dihydro-8H-imidazo[5,1-c][1,4]oxazine and 2 mg of 2-{4-(4-fluorophenyl)-5-methoxymethyl-2-{(E)-2-[3-methoxy-4-(4-methyl-1H-imidazol-1-yl)phenyl]vinyl}imidazol-1-yl}ethanol.

Provenance & Evidence