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

HRID 587448Notes

Reaction equation

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

Participants

Conditions

Temperature: 50 °C

Procedure

A mixture of 3-[4-(1H-pyrazolo[3,4-b]pyridin-1-yl)phenyl]-1,3-dihydro-2H-imidazo[4,5-b]pyridin-2-one (50 mg) and iodoethane (10.5 μl) was stirred at 50° C. for 30 min, treated with water and extracted with AcOEt. The organic layer was dried over MgSO4 and concentrated in vacuo. The residue was chromatographed on silica gel eluting with Hexane/AcOEt=2/1-1/2. The product was crystallized from AcOEt/hexane to give 1-ethyl-3-[4-(1H-pyrazolo[3,4-b]pyridin-1-yl)phenyl]-1,3-dihydro-2H-imidazo[4,5-b]pyridin-2-one (13 mg).

Workup

extractionextracted with AcOEt
dry with materialThe organic layer was dried over MgSO4
concentrationconcentrated in vacuo
customThe residue was chromatographed on silica gel eluting with Hexane/AcOEt=2/1-1/2
customThe product was crystallized from AcOEt/hexane

Sources & evidence

ORD record: ord-d438ed18f8954934975eeb0e4cb21727
Source dataset: uspto-grants-2016_01
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09226921B2

Reaction notes

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