Iodoethane → 3-[4-(benzyloxy)phenyl]-1-ethyl-7-methyl-1,3-dihydro-2H-imidazo[4,5-b]pyridin-2-one

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Reaktionsgleichung

I[CH2:2][CH3:3].[CH2:4]([O:11][C:12]1[CH:17]=[CH:16][C:15]([N:18]2[C:22]3=[N:23][CH:24]=[CH:25][C:26]([CH3:27])=[C:21]3[NH:20][C:19]2=[O:28])=[CH:14][CH:13]=1)[C:5]1[CH:10]=[CH:9][CH:8]=[CH:7][CH:6]=1.C(=O)([O-])[O-].[Cs+].[Cs+]>CN(C=O)C.O>[CH2:4]([O:11][C:12]1[CH:13]=[CH:14][C:15]([N:18]2[C:22]3=[N:23][CH:24]=[CH:25][C:26]([CH3:27])=[C:21]3[N:20]([CH2:2][CH3:3])[C:19]2=[O:28])=[CH:16][CH:17]=1)[C:5]1[CH:10]=[CH:9][CH:8]=[CH:7][CH:6]=1

Komponenten

Reaktionsbedingungen

Temperatur: 50 °C

Versuchsvorschrift

Iodoethane (0.289 mL) was added to a mixture of 3-[4-(benzyloxy)phenyl]-7-methyl-1,3-dihydro-2H-imidazo[4,5-b]pyridin-2-one (998 mg) and cesium carbonate (1.96 g) in DMF (10 mL) at room temperature. The mixture was stirred at 50° C. for 4 h. The mixture was diluted with water at room temperature and extracted with AcOEt. The organic layer was separated, washed with water and brine, dried over MgSO4 and concentrated in vacuo. The residue was purified by column chromatography (silica gel, eluted with 15%-30% AcOEt in hexane) to give 3-[4-(benzyloxy)phenyl]-1-ethyl-7-methyl-1,3-dihydro-2H-imidazo[4,5-b]pyridin-2-one (801 mg) as an off-white solid.

Aufarbeitung

extractionextracted with AcOEt
customThe organic layer was separated
washwashed with water and brine
dry with materialdried over MgSO4
concentrationconcentrated in vacuo
customThe residue was purified by column chromatography (silica gel, eluted with 15%-30% AcOEt in hexane)

Quellen und Nachweise

ORD-Eintrag: ord-815f9d1a2f914d05804784bb769e04b9
Quelldatensatz: uspto-grants-2016_01
DOI: 10.6084/m9.figshare.5104873.v1
Patentnummer: US09226921B2

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