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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1771907Generated: November 3, 2026

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

https://huagongshe.com/reaction/1771907

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-Fluoro-5-trifluoromethoxyphenyl)-1-(pyridin-3-yl)-1H-pyrazole-3-carboxylic acidHCID 89602508—

Reaction Steps

1.82 g (4.71 mmol) of the compound from example 1A is reacted with 1.03 g (7.07 mmol) 3-pyridylhydrazine hydrochloride in a manner analogous to the synthesis of the compound from example 8A. Following hydrolysis, 1.12 g (65% 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-32757d58079c46a9bd8aeb7ec857c57b
Source noteuspto-grants-2016_02