HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1805604Generated: October 30, 2026
Phenylhydrazine → 3-(1-Phenyl-1h-Pyrazol-5-Yl)-1-[3-(Trifluoromethyl)phenyl]pyridazin-4(1h)-One
https://huagongshe.com/reaction/1805604
Participants
| Role | Name | HCID | Charge |
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| Reactant | Phenylhydrazine | HCID 7516 | — |
| Reactant | 3-[3-(dimethylamino)prop-2-enoyl]-1-[3-(trifluoromethyl)phenyl]pyridazin-4(1H)-one | HCID 66710802 | — |
| Solvent | Ethanol | HCID 702 | — |
| Product | 3-(1-Phenyl-1h-Pyrazol-5-Yl)-1-[3-(Trifluoromethyl)phenyl]pyridazin-4(1h)-One | HCID 46219819 | 15% |
Reaction Steps
To a solution of 3-[3-(dimethylamino)prop-2-enoyl]-1-[3-(trifluoromethyl)phenyl]pyridazin-4(1H)-one (337 mg, 1.0 mmol) in ethanol (100 mL) was added phenylhydrazine (163 mg, 1.5 mmol). The mixture was stirred at 100° C. for 3 h, and the solvent was removed under reduced pressure. Preparative HPLC chromatography provided 3-(1-phenyl-1H-pyrazol-5-yl)-1-[3-(trifluoromethyl)phenyl]pyridazin-4(1H)-one as a gray solid (55 mg, 15%).
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| Patent number | US08354411B2 |
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| Source dataset | uspto-grants-2013_01 |
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| ORD ID | ord-61d30d3b17074db39652cd3700292dfe |
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| Source note | uspto-grants-2013_01 |
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