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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2109279Generated: October 25, 2026

Ethyl Acetoacetate → 1-Benzyl-4-hydrazinylpiperidine

https://huagongshe.com/reaction/2109279

Reaction equation

Participants

RoleNameHCIDCharge
ReactantEthyl AcetoacetateHCID 8868—
Reactant1-Benzyl-4-piperidoneHCID 19220—
Reactant1-Benzyl-4-hydrazinylpiperidineHCID 416192—
Reactant4-Hydrazinyl-1-methylpiperidineHCID 10920535—
Reactant5-cyclopropyl-1-(propan-2-yl)-1H-pyrazole-4-carbaldehydeHCID 19620135—
Product1-Benzyl-4-hydrazinylpiperidineHCID 416192—
Product1-(1-Benzyl-piperidin-4-yl)-5-methyl-1H-pyrazole-4-carbaldehydeHCID 21097225—

Reaction Steps

1-(1-Benzyl-piperidin-4-yl)-5-methyl-1H-pyrazole-4-carbaldehyde was prepared from ethyl acetoacetate and (1-benzyl-piperidin-4-yl)-hydrazine in the same manner as 5-cyclopropyl-1-isopropyl-1H-pyrazole-4-carbaldehyde (Example 49). (1-Benzyl-piperidin-4-yl)-hydrazine was prepared from 1-benzyl-piperidin-4-one in the same manner as (1-methyl-piperidin-4-yl)-hydrazine (Example 92).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07514458B2
Source datasetuspto-grants-2009_04
ORD IDord-88e3dcf0948c4fbc9e8a474c3810e9fd
Source noteuspto-grants-2009_04