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

HRID 587520Notes

Reaction equation

HRID 587520 reaction equation
Cl[C:2]1[N:6]([CH3:7])[C:5]2[CH:8]=[CH:9][CH:10]=[CH:11][C:4]=2[N:3]=1.[CH:12]1([N:15]2[C:23]3[C:18](=[N:19][CH:20]=[CH:21][CH:22]=3)[N:17]([C:24]3[CH:29]=[CH:28][C:27]([OH:30])=[CH:26][CH:25]=3)[C:16]2=[O:31])[CH2:14][CH2:13]1.[H-].[Na+]>CN(C=O)C.CO>[CH:12]1([N:15]2[C:23]3[C:18](=[N:19][CH:20]=[CH:21][CH:22]=3)[N:17]([C:24]3[CH:29]=[CH:28][C:27]([O:30][C:2]4[N:6]([CH3:7])[C:5]5[CH:8]=[CH:9][CH:10]=[CH:11][C:4]=5[N:3]=4)=[CH:26][CH:25]=3)[C:16]2=[O:31])[CH2:14][CH2:13]1

Participants

6

Reactant 3

HCID 24758Sodium hydrideHCID 6630802-chloro-1-methyl-1H-1,3-benzodiazoleHCID 585773571-cyclopropyl-3-(4-hydroxyphenyl)-1,3-dihydro-2H-imidazo[4,5-b]pyridin-2-one

Product 1

HCID 585777141-cyclopropyl-3-{4-[(1-methyl-1H-benzimidazol-2-yl)oxy]phenyl}-1,3-dihydro-2H-imidazo[4,5-b]pyridin-2-oneYield 14%

Reagents, catalysts & solvents 2

HCID 887MethanolSolventHCID 6228DimethylformamideSolvent

Conditions

Temperature
180 °C

Procedure

2-Chloro-1-methyl-1H-benzimidazole (15 mg) was added to a solution of 1-cyclopropyl-3-(4-hydroxyphenyl)-1,3-dihydro-2H-imidazo[4,5-b]pyridin-2-one (24.06 mg) and NaH (5.40 mg) in DMF (1 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-cyclopropyl-3-{4-[(1-methyl-1H-benzimidazol-2-yl)oxy]phenyl}-1,3-dihydro-2H-imidazo[4,5-b]pyridin-2-one (5.0 mg) as white crystals.

Workup

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

Sources & evidence

ORD record
ord-d03989206b2642158912f5ab954aa474
Source dataset
uspto-grants-2016_01
Patent number
US09226921B2

Reaction notes

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