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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1924500Generated: October 25, 2026

4-(Methylsulphonyl)phenylhydrazine → 1-(3-Ethyl-phenyl)-3-[2-(4-methanesulfonyl-phenyl)-2H-pyrazol-3-yl]-1H-pyridazin-4-one

https://huagongshe.com/reaction/1924500

Reaction equation

Participants

RoleNameHCIDCharge
Reactant4-(Methylsulphonyl)phenylhydrazineHCID 70142—
Reactant3-((E)-3-Dimethylamino-acryloyl)-1-(3-ethyl-phenyl)-1H-pyridazin-4-oneHCID 59370108—
Product1-(3-Ethyl-phenyl)-3-[2-(4-methanesulfonyl-phenyl)-2H-pyrazol-3-yl]-1H-pyridazin-4-oneHCID 4621931950%

Reaction Steps

The product was obtained starting from 3-((E)-3-Dimethylamino-acryloyl)-1-(3-ethyl-phenyl)-1H-pyridazin-4-one (A-4) and 4-(methylsulfonyl)phenylhydrazine according to the method described for Example 1 in 50% yield. MS: M=421.1 (M+H)+

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08178538B2
Source datasetuspto-grants-2012_05
ORD IDord-7c06988d7c804cdca8f4284881283d7e
Source noteuspto-grants-2012_05