Hydrochloric Acid → HCID 68095685, compound

Participants

Reaction Conditions

Reaction Steps

To a 50 ml volume three-necked flask, 4-(2,4,6-triethylphenyl)-2-methyl-5-methylsulfinyl-6-trifluoromethyl-2,3-dihydro-3-pyridazinone ((2-49)-(1)-40) (0.692 g), N-methylpyrrolidone (6.40 g), water (3.11 g), and sodium hydroxide (0.626 g) were added at room temperature. The resulting mixture was stirred at 50° C. for 4 hours. The reaction mixture was cooled to room temperature, added 12N hydrochloric acid (3 ml) and water (15 ml), and extracted with ethyl acetate (30 ml) 3 times. The combined organic layer was dried over anhydrous magnesium sulfate, concentrated under reduced pressure, and subjected to silica gel column chromatography (hexane: ethyl acetate=8:1 to hexane: ethyl acetate=5:1 to hexane: ethyl acetate=3:1). Then, the resulting fraction was concentrated under reduced pressure, recrystallized from hexane to give 0.331 g of 4-(2,4,6-triethylphenyl)-5-hydroxy-2-methyl-6-trifluoromethyl-2,3-dihydro-3-pyridazinone ((1-16)-(1)-40) on the filter paper.

Provenance & Evidence