Sodium hydride → 1-(difluoromethyl)-3-{4-[(3-methyl-3H-imidazo[4,5-b]pyridin-2-yl)oxy]phenyl}-1,3-dihydro-2H-imidazo[4,5-b]pyridin-2-one

HRID 82600Notes

Reaction equation

[CH3:1][N:2]1[C:6]2=[N:7][CH:8]=[CH:9][CH:10]=[C:5]2[N:4]=[C:3]1S(C)(=O)=O.[F:15][CH:16]([F:34])[N:17]1[C:25]2[C:20](=[N:21][CH:22]=[CH:23][CH:24]=2)[N:19]([C:26]2[CH:31]=[CH:30][C:29]([OH:32])=[CH:28][CH:27]=2)[C:18]1=[O:33].[H-].[Na+]>CN(C=O)C.CO>[F:34][CH:16]([F:15])[N:17]1[C:25]2[C:20](=[N:21][CH:22]=[CH:23][CH:24]=2)[N:19]([C:26]2[CH:31]=[CH:30][C:29]([O:32][C:3]3[N:2]([CH3:1])[C:6]4=[N:7][CH:8]=[CH:9][CH:10]=[C:5]4[N:4]=3)=[CH:28][CH:27]=2)[C:18]1=[O:33]

Participants

Conditions

Temperature: 180 °C

Procedure

3-Methyl-2-(methylsulfonyl)-3H-imidazo[4,5-b]pyridine (90 mg) was added to a solution of 1-(difluoromethyl)-3-(4-hydroxyphenyl)-1,3-dihydro-2H-imidazo[4,5-b]pyridin-2-one (124 mg) and NaH (25.6 mg) in DMF (3 mL) at 100° C. The mixture was heated at 180° C. for 1 h under microwave irradiation. The reaction mixture was diluted with MeOH and concentrated in vacuo. The residue was purified by column chromatography (NH silica gel, eluted with 0%-50% EtOAc in hexane) to give 1-(difluoromethyl)-3-{4-[(3-methyl-3H-imidazo[4,5-b]pyridin-2-yl)oxy]phenyl}-1,3-dihydro-2H-imidazo[4,5-b]pyridin-2-one (50 mg) as white crystals.

Workup

concentrationconcentrated in vacuo
customThe residue was purified by column chromatography (NH silica gel, eluted with 0%-50% EtOAc in hexane)

Sources & evidence

ORD record: ord-e5310baf1b1c48f8bc1d427e35c44009
Source dataset: uspto-grants-2014_09
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08846713B2

Reaction notes

Loading…