Sodium Carbonate → 3-(4-Isopropoxyphenyl)pyridin-2-amine

HRID 1622604Notizen

Reaktionsgleichung

C(=O)([O-])[O-].[Na+].[Na+].[CH3:7][CH:8]([O:10][C:11]1[CH:16]=[CH:15][C:14](B(O)O)=[CH:13][CH:12]=1)[CH3:9].Br[C:21]1[C:22]([NH2:27])=[N:23][CH:24]=[CH:25][CH:26]=1>COCCOC.O.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[CH3:7][CH:8]([O:10][C:11]1[CH:16]=[CH:15][C:14]([C:21]2[C:22]([NH2:27])=[N:23][CH:24]=[CH:25][CH:26]=2)=[CH:13][CH:12]=1)[CH3:9]

Komponenten

Reaktionsbedingungen

Temperatur: 80 °C

Versuchsvorschrift

A mixture of sodium carbonate (906 mg), tetrakis(triphenylphosphine)palladium(0) (247 mg), 4-(1-methylethoxy)phenylboronic acid (1000 mg) and 3-bromopyridin-2-amine (0.739 g) in 1,2-dimethoxyethane (50 mL) and water (10 mL) was stirred under a nitrogen atmosphere at 80° C. overnight. The reaction mixture was added to water, and the mixture was extracted with ethyl acetate. The organic layer was washed with saturated brine, dried over anhydrous magnesium sulfate, and concentrated under reduced pressure. The residue was purified by silica gel column chromatography (ethyl acetate/hexane) to give the title compound (883 mg) as a pale-yellow solid.

Aufarbeitung

extractionthe mixture was extracted with ethyl acetate
washThe organic layer was washed with saturated brine
dry with materialdried over anhydrous magnesium sulfate
concentrationconcentrated under reduced pressure
customThe residue was purified by silica gel column chromatography (ethyl acetate/hexane)

Quellen und Nachweise

ORD-Eintrag: ord-bffa1ad397d7479fa44b9be7ea33acf0
Quelldatensatz: uspto-grants-2014_07
DOI: 10.6084/m9.figshare.5104873.v1
Patentnummer: US08778934B2

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