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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2182669Generated: November 1, 2026

Pyridine → HCID 21948814, compound

https://huagongshe.com/reaction/2182669

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPyridineHCID 1049—
ReactantAcetic AnhydrideHCID 7918—
ReactantSodium BicarbonateHCID 516892—
Reactant2-Methylamino-5-nitroquinolineHCID 21948796—
SolventEthyl AcetateHCID 8857—
ProductHCID 21948814HCID 21948814—

Reaction Conditions

Temperature60 °C

Reaction Steps

580 mg (2.4 mmol) of 2-methylamino-5-nitroquinoline is stirred with 4 ml (50 mmol) of pyridine and 2 ml (21 mmol) of acetic anhydride for 15 hours at room temperature and stirred for 4.5 hours at 60° C. The batch is diluted with ethyl acetate, poured into saturated NaHCO3 solution, stirred for 30 minutes, and extracted with ethyl acetate. The extracts are dried (Na2SO4) and concentrated by evaporation. The residue is purified on silica gel with hexane-ethyl acetate: 660 mg of a yellow solid.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06897224B2
Source datasetuspto-grants-2005_05
ORD IDord-dbeea99cc8014d6385d08065310d6f6c
Source noteuspto-grants-2005_05