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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 337333Generated: October 25, 2026

Water → 1-(2-Methoxyphenyl)-3,4,5-trimethyl-1H-pyrazole

https://huagongshe.com/reaction/337333

Reaction equation

Participants

RoleNameHCIDCharge
ReactantWaterHCID 962—
ReactantSodium CarbonateHCID 10340—
Reactant3-Methyl-2,4-pentanedioneHCID 69949—
Reactant2-Methoxyphenylhydrazine HydrochlorideHCID 2849445—
SolventEthanolHCID 702—
Product1-(2-Methoxyphenyl)-3,4,5-trimethyl-1H-pyrazoleHCID 55219440—

Reaction Steps

200 mg of 2-methoxyphenyl hydrazine hydrochloride was dissolved in 4 ml of ethanol, and 134 μl of 3-methyl-2,4-pentanedione was added and heated at reflux for 3 hours. To the reaction mixture was added 50 ml of water, neutralized with a saturated aqueous solution of sodium carbonate, and extracted with 60 ml of ethyl acetate. After the organic layer was dried over anhydrous magnesium sulfate, the solvent was distilled off under reduced pressure to yield 209.8 mg of the title compound.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08889727B2
Source datasetuspto-grants-2014_11
ORD IDord-6c70bd91c2274e9ba033fb8f22b7f8e0
Source noteuspto-grants-2014_11