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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1350741Generated: October 26, 2026

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

https://huagongshe.com/reaction/1350741

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 numberUS07214802B2
Source datasetuspto-grants-2007_05
ORD IDord-a96151d41a484168b747dd54fc0fb85e
Source noteuspto-grants-2007_05