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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 579236Generated: October 29, 2026

Hydrochloric Acid → HCID 66695563, compound

https://huagongshe.com/reaction/579236

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantN-methyl-2-pyrrolidoneHCID 13387—
ReactantSodium HydroxideHCID 14798—
ReactantHCID 56943037HCID 56943037—
SolventWaterHCID 962—
ProductHCID 66695563HCID 6669556344.5%

Reaction Conditions

Temperature50 °C

Reaction Steps

To a 30 ml volume three-necked flask, 4-(2,6-diethyl-4-methylphenyl)-2-methyl-5-methylsulfinyl-6-trifluoromethyl-2,3-dihydro-3-pyridazinone ((2-49)-(1)-39) (0.375 g), N-methylpyrrolidone (3.49 g), water (1.75 g), and sodium hydroxide (0.34 g) were added at room temperature. The resulting mixture was stirred at 50° C. for 4 hours. Then, the resulting mixture was cooled to room temperature, added 12N hydrochloric acid (1.5 ml) and water (15 ml), and extracted with ethyl acetate (30 ml). The organic layer was dried over anhydrous magnesium sulfate, concentrated under reduced pressure, and subjected to silica gel column chromatography (hexane: ethyl acetate=7:1 to hexane: ethyl acetate=5:1 to hexane: ethyl acetate=3:1) to give 0.147 g of 4-(2,6-diethyl-4-methylphenyl)-5-hydroxyl-2-methyl-6-trifluoromethyl-2,3-dihydro-3-pyridazinone ((1-16)-(1)-39).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09040709B2
Source datasetuspto-grants-2015_05
ORD IDord-1381436bf7a24c628a390c15f9e9c5f4
Source noteuspto-grants-2015_05