Sodium hydride → HCID 178462972, compound

HRID 82576Notes

Reaction equation

[CH2:1]([N:3]1[C:11]2[C:6](=[N:7][CH:8]=[CH:9][CH:10]=2)[N:5]([C:12]2[CH:17]=[CH:16][C:15]([OH:18])=[CH:14][CH:13]=2)[C:4]1=[O:19])[CH3:2].CS([C:24]1[N:25](COCC[Si](C)(C)C)[C:26]2[C:27]([N:32]=1)=[N:28][CH:29]=[CH:30][CH:31]=2)(=O)=O.[H-].[Na+]>CO>[CH2:1]([N:3]1[C:11]2[C:6](=[N:7][CH:8]=[CH:9][CH:10]=2)[N:5]([C:12]2[CH:13]=[CH:14][C:15]([O:18][C:24]3[NH:32][C:27]4=[N:28][CH:29]=[CH:30][CH:31]=[C:26]4[N:25]=3)=[CH:16][CH:17]=2)[C:4]1=[O:19])[CH3:2]

Participants

Conditions

Temperature: 200 °C

Procedure

The mixture of 1-ethyl-3-(4-hydroxyphenyl)-1,3-dihydro-2H-imidazo[4,5-b]pyridin-2-one (281 mg), 2-(methylsulfonyl)-1-{[2-(trimethylsilyl)ethoxy]methyl}-1H-imidazo[4,5-b]pyridine (240 mg) and NaH (35.2 mg) in DMF(dry) (3 mL) was heated at 200° C. for 3 h under microwave irradiation. The reaction mixture was diluted with MeOH, and concentrated in vacuo. The residue was diluted with 6N HCl. The mixture was neutralized with aq. NaHCO3 at 0° C. and extracted with EtOAc. 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 0%-100% EtOAc in hexane) to give 1-ethyl-3-[4-(3H-imidazo[4,5-b]pyridin-2-yloxy)phenyl]-1,3-dihydro-2H-imidazo[4,5-b]pyridin-2-one (40 mg) as white crystals.

Workup

concentrationconcentrated in vacuo
additionThe residue was diluted with 6N HCl
customwas neutralized with aq. NaHCO3 at 0° C.
extractionextracted with EtOAc
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 0%-100% EtOAc in hexane)

Sources & evidence

ORD record: ord-e8785682d398407489143f08858994c1
Source dataset: uspto-grants-2014_09
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08846713B2

Reaction notes

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