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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 429273Generated: October 30, 2026

Hydrazine hydrate (1:1) → HCID 178434553, compound

https://huagongshe.com/reaction/429273

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrazine hydrate (1:1)HCID 24654—
Reactant2-(Ethoxymethylidene)-3-oxo-N-[4-(trifluoromethyl)phenyl]butanamideHCID 53424263—
SolventEthanolHCID 702—
ProductHCID 178434553HCID 17843455333.6%

Reaction Steps

N-[4-(Trifluoromethyl)phenyl]-2-(ethoxymethylene)acetoacetamide (1 g) in 3 mL of ethanol is stirred overnight with 0.3 g of hydrazine hydrate. The precipitate is collected by vacuum filtration, washed with ethanol:water 2:1 and dried to give 0.3 g of 3-methyl-4-[4-(trifluoromethyl)phenylaminocarbonyl]pyrazole as an off-white solid.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06316479B1
Source datasetuspto-grants-2001_11
ORD IDord-97af3a390b1c41d88dd2e5f11f294d31
Source noteuspto-grants-2001_11