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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1641413Generated: October 31, 2026

Hydrochloric Acid → 1-(3,5-Difluoropyridin-2-yl)ethan-1-amine

https://huagongshe.com/reaction/1641413

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
Reactanttert-Butyl-1-(3,5-difluoropyridin-2-yl)ethylcarbamateHCID 129968424—
SolventDichloromethaneHCID 6344—
Solvent1,4-DioxaneHCID 31275—
Product1-(3,5-Difluoropyridin-2-yl)ethan-1-amineHCID 5836739097.3%

Reaction Steps

To tert-butyl-1-(3,5-difluoropyridin-2-yl)ethylcarbamate (Method 16; 0.10 g, 0.39 mmol) in DCM (2 ml) was added HCl (0.8 ml, 3.12 mmol) in dioxane. The reaction was stirred at room temperature for 3 hours. The solvent was removed and 10 ml of saturated sodium bicarbonate was added. The resulting aqueous solution was extracted with ether (5×30 ml), dried over sodium sulfate and concentrated to give the title compound (0.06 g, 95%) as pale yellow oil. MS: Calcd.: 158. Found: [M+H]+ 159.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08114989B2
Source datasetuspto-grants-2012_02
ORD IDord-2aed46d78b8d4ca68e99ddc4d6c933eb
Source noteuspto-grants-2012_02