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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1924559Generated: October 27, 2026

2,5-Difluorophenylhydrazine → 3-[2-(2,5-Difluoro-phenyl)-2H-pyrazol-3-yl]-1-(3-trifluoromethoxy-phenyl)-1H-pyridazin-4-one

https://huagongshe.com/reaction/1924559

Reaction equation

Participants

RoleNameHCIDCharge
Reactant2,5-DifluorophenylhydrazineHCID 588957—
Reactant3-((E)-3-Dimethylamino-acryloyl)-1-(3-trifluoromethoxy-phenyl)-1H-pyridazin-4-oneHCID 59370123—
Product3-[2-(2,5-Difluoro-phenyl)-2H-pyrazol-3-yl]-1-(3-trifluoromethoxy-phenyl)-1H-pyridazin-4-oneHCID 59369999—

Reaction Steps

Reaction of 3-((E)-3-dimethylamino-acryloyl)-1-(3-trifluoromethoxy-phenyl)-1H-pyridazin-4-one (A-6) and (2,5-difluoro-phenyl)-hydrazine according to example 43 gave the desired product. MS: M=435.0 (M+H)+

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08178538B2
Source datasetuspto-grants-2012_05
ORD IDord-3c712f2110904354955c845e367c9904
Source noteuspto-grants-2012_05