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

HRID 1430002Notes

Reaction equation

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

Participants

Conditions

Temperature: 50 °C

Procedure

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.

Workup

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)

Sources & evidence

ORD record: ord-ccbf6b9bf56148c2a4f5d54eb4e6f9a7
Source dataset: uspto-grants-2015_01
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08940758B2

Reaction notes

Loading…