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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1786249Generated: October 30, 2026

Hydrazine hydrate (1:1) → HCID 67548783, compound

https://huagongshe.com/reaction/1786249

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrazine hydrate (1:1)HCID 24654—
ReactantHCID 67549569HCID 67549569—
Solvent1-ButanolHCID 263—
ProductHCID 67548783HCID 6754878362%

Reaction Steps

As described for example 112a, (3-bromo-2-oxo-2H-pyridin-1-yl)-acetic acid ethyl ester in butanol was reacted with hydrazine hydrate (1.2 equivalents) at reflux for 16 h. The precipitate was filtered and triturated with hot methanol to afford the title compound as an off-white solid (yield: 62%). MS: m/e=244.2/246.2 [M−H]−.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07507729B2
Source datasetuspto-grants-2009_03
ORD IDord-85bae26dc8f64b46b36b6910f0c0b0d1
Source noteuspto-grants-2009_03