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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1771908Generated: October 28, 2026

3-Hydrazinylpyridine hydrochloride → 5-(3-Chloro-5-trifluoromethoxyphenyl)-1-(pyridin-3-yl)-1H-pyrazole-3-carboxylic acid

https://huagongshe.com/reaction/1771908

Reaction equation

Participants

RoleNameHCIDCharge
Reactant3-Hydrazinylpyridine hydrochlorideHCID 23143454—
Reactant1-(3-chloro-4-fluorophenyl)-5-(3-fluoro-5-trifluoromethoxyphenyl)-1H-pyrazole-3-carboxylic acidHCID 58277289—
Product5-(3-Chloro-5-trifluoromethoxyphenyl)-1-(pyridin-3-yl)-1H-pyrazole-3-carboxylic acidHCID 89602463—

Reaction Steps

500 mg (1.23 mmol) of the compound from example 2A is reacted with 197 mg (1.36 mmol) 3-pyridylhydrazine hydrochloride in a manner analogous to the synthesis of the compound from example 8A. Following hydrolysis, 203 mg (43% of theoretical yield) of the title compound is produced.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09249148B2
Source datasetuspto-grants-2016_02
ORD IDord-bc03b208c2f14532b4a98e5efcd22ec4
Source noteuspto-grants-2016_02