Water → 3-Bromo-1-methyl-1,2-dihydroquinolin-2-one

To a solution of 3-bromo-2-hydroxyquinoline (50 mg, 0.223 mmol) in DMF (1 mL) was added methyl iodide (0.017 mL, 0.268 mmol) and potassium carbonate (46.3 mg, 0.335 mmol.) at room temperature. The reaction mixture was stirred for 16 hours at room temperature. Water was added and the solution was extracted with ethyl acetate. The organic layer was washed with water then aqueous saturated sodium chloride solution. The organic layer was dried over sodium sulfate, filtered, and concentrated in vacuo. The resulting residue was purified by silica gel column chromatography (developing solvent: hexane/ethyl acetate=/1) to give 3-bromo-1-methylquinolin-2(1H)-one (52 mg, MS: 238.1 [M+H+].)

1. extractionthe solution was extracted with ethyl acetate
2. washThe organic layer was washed with water
3. dry with materialThe organic layer was dried over sodium sulfate
4. filtrationfiltered
5. concentrationconcentrated in vacuo
6. customThe resulting residue was purified by silica gel column chromatography (developing solvent: hexane/ethyl acetate=/1)

ORD-Eintrag

ord-4fe1d142d4924fd0becc8e46c51c5a81

Quelldatensatz

uspto-grants-2015_05

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US09040712B2