Back
HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1908471Generated: October 28, 2026

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

https://huagongshe.com/reaction/1908471

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 numberUS08598181B2
Source datasetuspto-grants-2013_12
ORD IDord-4519a36ac5054203849bf8b7b0b12242
Source noteuspto-grants-2013_12