Toluene → 4-(2,6-Diethyl-4-methylphenyl)-5-hydroxy-2,6-dimethyl-3(2H)-pyridazinone

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Reaction Conditions

Reaction Steps

To a 100 mL volume four-necked flask, 4-(2,6-diethyl-4-methylphenyl)-2,6-dimethyl-5-methylsulfonyl-2,3-dihydropyridazin-3-one ((2-34)-(1)-39) (6.57 g), toluene (16.7 g), benzyltrimethylammonium chloride (0.16 g), and sodium hydroxide (2.86 g) were added under a nitrogen atmosphere, and stirred at 120° C. for 38 hours. Then, water (24.2 g) was added at room temperature. The organic layer was removed, and the aqueous layer was mixed with 3.5 w/w % of hydrochloric acid (20 g) at the same temperature, and filtered. The residue was washed with water (12 g) and dried to give 4.8 g of 4-(2,6-diethyl-4-methylphenyl)-5-hydroxy-2,6-dimethyl-2,3-dihydro-3-pyridazinone ((1-4)-(1)-39).

Provenance & Evidence