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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1064082Generated: November 1, 2026

4-(3,4-Dichloro-phenyl)-5-pyridin-4-yl-pyrazolidin-3-one → 4-(3,4-Dichloro-phenyl)-5-pyridin-4-yl-1,2-dihydro-pyrazol-3-one

https://huagongshe.com/reaction/1064082

Reaction equation

Participants

RoleNameHCIDCharge
Reactant4-(3,4-Dichloro-phenyl)-5-pyridin-4-yl-pyrazolidin-3-oneHCID 22277994—
SolventMethanolHCID 887—
Product4-(3,4-Dichloro-phenyl)-5-pyridin-4-yl-1,2-dihydro-pyrazol-3-oneHCID 10267120—

Reaction Steps

The solution of 4-(3,4-Dichloro-phenyl)-5-pyridin-4-yl-pyrazolidin-3-one 0.30 g, 20 mg Pd/C and 20 mL methanol was stirred at room temperature. Air was bubbled through for 2 hours. Filtered off the Pd/C catalyst, vacuumed down all solvent. The title compound was obtained as white solid 0.29 g. MS (ES+): 306 (M+H)+.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06967254B2
Source datasetuspto-grants-2005_11
ORD IDord-e2745fa2c552426ba70f5438b53e9be8
Source noteuspto-grants-2005_11