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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 895534Generated: October 30, 2026

Dimethylformamide → HCID 22380321, compound

https://huagongshe.com/reaction/895534

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 numberUS06916819B2
Source datasetuspto-grants-2005_07
ORD IDord-7eeaa8eeb56d4c3b943f70e07ff87432
Source noteuspto-grants-2005_07