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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2109246Generated: October 25, 2026

Ethyl isobutyrylacetate → 1-Cyclopropyl-5-isopropyl-1H-pyrazole-4-carbaldehyde

https://huagongshe.com/reaction/2109246

Reaction equation

Participants

RoleNameHCIDCharge
ReactantEthyl isobutyrylacetateHCID 81583—
ReactantCyclopropylhydrazine--hydrogen chloride (1/1)HCID 19594967—
Reactant5-cyclopropyl-1-(propan-2-yl)-1H-pyrazole-4-carbaldehydeHCID 19620135—
Product1-Cyclopropyl-5-isopropyl-1H-pyrazole-4-carbaldehydeHCID 21097241—

Reaction Steps

1-Cyclopropyl-5-isopropyl-1H-pyrazole-4-carbaldehyde was prepared from ethyl 4-methyl-3-oxopentanoate and cyclopropyl hydrazine hydrochloride in the same manner as 5-cyclopropyl-1-isopropyl-1H-pyrazole-4-carbaldehyde (Example 49).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07514458B2
Source datasetuspto-grants-2009_04
ORD IDord-90a103d0120e4db49c452f647a453c8b
Source noteuspto-grants-2009_04