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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1011959Generated: November 1, 2026

Hydrochloric Acid → HCID 67314713, compound

https://huagongshe.com/reaction/1011959

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantHydrazinium chlorideHCID 115031—
ReactantSodium BicarbonateHCID 516892—
ReactantEthyl 2-isonicotinoyl-3-oxobutanoateHCID 67314215—
SolventEthanolHCID 702—
SolventWaterHCID 962—
Solvent1,4-DioxaneHCID 31275—
ProductHCID 67314713HCID 6731471383%

Reaction Steps

To a solution of 3-oxo-2-(pyridine-4-carbonyl)-butyric acid ethyl ester (1 g, 4.25 mmol) in 10 ml ethanol, were added a solution of hydrazine hydrochloride (291 mg, 4.25 mmol) in 4 ml water and, then 0.1 ml of 4M HCl in dioxane. The yellow solution was stirred 1 h at room temperature, poured on a saturated solution of NaHCO3 and extracted twice with EtOAc. The organic phases were washed with brine, dried over magnesium sulfate, and evaporated to afford the title compound as light yellow solid (815 mg, 83%). MS: 232.1 (MH+).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07977358B2
Source datasetuspto-grants-2011_07
ORD IDord-7d36124fae1349858c78fc1f6174af8d
Source noteuspto-grants-2011_07