Back
HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1594061Generated: October 30, 2026

Dimethylformamide → HCID 22380321, compound

https://huagongshe.com/reaction/1594061

Reaction equation

Participants

RoleNameHCIDCharge
ReactantDimethylformamideHCID 6228—
ReactantTetrahydrofuranHCID 8028—
Reactant3-Fluoro-2-nitropyridineHCID 2762802—
SolventWaterHCID 962—
ProductHCID 22380321HCID 22380321—

Reaction Steps

Ice cold ethylamine (0.55 mL) was added to a solution of 3-fluoro-2-nitropyridine (400 mg, 2.8 mmol; prepared according to N. Plé and G. Quéguiner, J. Heterocyclic Chem, 1989, 26, 475-476) in 2:1 DMF:THF (6 mL) at ambient temperature, and the mixture stirred for 0.75 h. Water was added, then extracted 2× with ethyl acetate. The combined organic layers were washed with water then with saturated aqueous sodium chloride, dried (MgSO4), and concentrated to give 3-ethylamino-2-nitro-pyridine as a gold solid. 1H NMR (CDCl3): δ 7.87 (d, 1h0, 7.43 (dd, 1H), 7.35 (d, 1H), 3.38 (pentet, 2H), 1.4 (t, 3H). LCMS: 121.1 (MH+—NO2).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07300945B2
Source datasetuspto-grants-2007_11
ORD IDord-8726680648da4e9885a27d3154b90003
Source noteuspto-grants-2007_11