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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2038000Generated: November 2, 2026

Ethyl pyruvate → ethyl (2E)-2-[(3-nitrophenyl)hydrazinylidene]propanoate

https://huagongshe.com/reaction/2038000

Reaction equation

Participants

RoleNameHCIDCharge
ReactantEthyl pyruvateHCID 12041—
Reactant3-Nitrophenylhydrazinium(1+) chlorideHCID 5464285—
SolventEthanolHCID 702—
Productethyl (2E)-2-[(3-nitrophenyl)hydrazinylidene]propanoateHCID 5357576—

Reaction Steps

(3-Nitrophenyl)hydrazine hydrochloride (30 g, 0.16 mol) and 2-oxo-propionic acid ethyl ester (22 g, 0.19 mol) were dissolved in ethanol (300 mL). The mixture was stirred at room temperature for 4 h before the solvent was evaporated under reduced pressure to give (E)-ethyl 2-(2-(3-nitrophenyl)hydrazono)propanoate, which was used directly in the next step.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08575209B2
Source datasetuspto-grants-2013_11
ORD IDord-4e69a5e9a4f1498abc7aa8da97b4353b
Source noteuspto-grants-2013_11