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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1777073Generated: November 2, 2026

Sodium Hydroxide → 4-Chloro-2-(1H-pyrazol-3-yl)phenol

https://huagongshe.com/reaction/1777073

Reaction equation

Participants

RoleNameHCIDCharge
ReactantSodium HydroxideHCID 14798—
ReactantP-ToluenesulfonylhydrazideHCID 15303—
Reactant1613317-59-1HCID 5426758—
SolventAcetonitrileHCID 6342—
Product4-Chloro-2-(1H-pyrazol-3-yl)phenolHCID 178516062—

Reaction Steps

A mixture of (E)-3-(5-chloro-2-hydroxyphenyl)-2-methylacrylaldehyde (40 mg, 0.203 mmol) and 4-methylbenzenesulfonohydrazide (41.7 mg, 0.224 mmol) in Acetonitrile (3 mL) were stirred at room temperature for 3 h and then acetonitrile (2 mL), Sodiumhydroxide (8.95 mg, 0.224 mmol) were added and the mixture was heated at reflux for 16 h. Product was used for further reaction without purification.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09266838B2
Source datasetuspto-grants-2016_02
ORD IDord-e93c3bc0b808426aa4568fbd3d4bdadd
Source noteuspto-grants-2016_02