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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 520347Generated: October 26, 2026

Hydrochloric Acid → 1-(5-Bromopyridin-2-yl)ethan-1-one

https://huagongshe.com/reaction/520347

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantMethanolHCID 887—
Reactant1,4-DioxaneHCID 31275—
Reactanttert-Butyl (2-(5-bromopyridin-2-yl)-2-oxoethyl)carbamateHCID 57561517—
SolventDichloromethaneHCID 6344—
Product1-(5-Bromopyridin-2-yl)ethan-1-oneHCID 23145345140.1%

Reaction Steps

To a reaction mixture of tert-butyl 2-(5-bromopyridin-2-yl)-2-oxoethylcarbamate (0.36 g, 1.142 mmol) in DCM was added 4 M hydrogen chloride in dioxane (2 ml, 8.00 mmol) and some MeOH. The reaction was stirred at rt for 3 hrs. The reaction mixture was concentrated to dryness to yield 2-amino-1-HCl salf of (5-bromopyridin-2-yl)ethanone (0.32 g) as a yellow solid. LC/MS (Cond. N-1): [M+H]+ 215.13, RT=0.945 min.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09326973B2
Source datasetuspto-grants-2016_05
ORD IDord-76babb79f08d4d45b0a94f579f7c2c34
Source noteuspto-grants-2016_05