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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1665692Generated: October 31, 2026

4-nitro-1-phenyl-1H-pyrazole → 1-Phenyl-1H-pyrazol-4-amine

https://huagongshe.com/reaction/1665692

Reaction equation

Participants

RoleNameHCIDCharge
Reactant4-nitro-1-phenyl-1H-pyrazoleHCID 2755894—
CatalystPalladiumHCID 23938—
SolventMethanolHCID 887—
SolventEthyl AcetateHCID 8857—
Product1-Phenyl-1H-pyrazol-4-amineHCID 12102169,365%

Reaction Steps

10% Pd/C (25 mg) was added to a stirred solution of 4-nitro-1-phenyl-1H-pyrazole (240 mg, 1.2 mmol) in a mixture of MeOH (2.5 mL) and EtOAc (2.5 mL) and stirred under H2 atmosphere overnight. The reaction mixture was filtered through celite and the filtrate so obtained was concentrated under reduced pressure to afford 140 mg (69365% Yield) of 4-amino-1-phenyl-1H-pyrazole.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08039463B2
Source datasetuspto-grants-2011_10
ORD IDord-345f202434ea4f7fbb743edc229a4c99
Source noteuspto-grants-2011_10