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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1889031Generated: October 30, 2026

Hydrazine hydrate (1:1) → 2-Oxo-1,2-dihydropyridine-3-carbohydrazide

https://huagongshe.com/reaction/1889031

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrazine hydrate (1:1)HCID 24654—
ReactantHCID 178498115HCID 178498115—
SolventEthanolHCID 702—
Product2-Oxo-1,2-dihydropyridine-3-carbohydrazideHCID 45084358—

Reaction Steps

Hydrazine hydrate (0.192 mL, 3.92 mmol) was added to a solution of the methyl 2-hydroxy-3-pyridinecarboxylate (400 mg, 2.61 mmol, commercially available from e.g. Apollo or Butt Park) in ethanol (10 mL) and the reaction was heated to reflux for 16 hrs. The reaction was cooled and the solvent was evaporated to afford an off-white solid in 395 mg.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08501946B2
Source datasetuspto-grants-2013_08
ORD IDord-031795ea8d9744fd811b0b87a5eebc37
Source noteuspto-grants-2013_08