Cesium carbonate → 1-ethyl-3-[1-(1,3-thiazol-2-yl)-1H-indol-5-yl]-1,3-dihydro-2H-imidazo[4,5-b]pyridin-2-one

HRID 1429936Notes

Reaction equation

[NH:1]1[C:9]2[C:4](=[CH:5][C:6]([N:10]3[C:14]4=[N:15][CH:16]=[CH:17][CH:18]=[C:13]4[N:12]([CH2:19][CH3:20])[C:11]3=[O:21])=[CH:7][CH:8]=2)[CH2:3][CH2:2]1.Cl[C:23]1[S:24][CH:25]=[CH:26][N:27]=1.C([O-])([O-])=O.[Cs+].[Cs+].C([O-])(O)=O.[Na+]>CN(C=O)C>[CH2:19]([N:12]1[C:13]2[C:14](=[N:15][CH:16]=[CH:17][CH:18]=2)[N:10]([C:6]2[CH:5]=[C:4]3[C:9](=[CH:8][CH:7]=2)[N:1]([C:23]2[S:24][CH:25]=[CH:26][N:27]=2)[CH:2]=[CH:3]3)[C:11]1=[O:21])[CH3:20]

Participants

Conditions

Temperature: 100 °C

Procedure

A mixture of 3-(2,3-dihydro-1H-indol-5-yl)-1-ethyl-1,3-dihydro-2H-imidazo[4,5-b]pyridin-2-one (75 mg), 2-chlorothiazole (48.0 mg) and Cs2CO3 (174 mg) in DMF (3 mL) was stirred at 100° C. for 3 days, treated with saturated NaHCO3 solution, and extracted with AcOEt. The organic layer was separated, dried over MgSO4 and concentrated in vacuo. The residue was purified by prep. HPLC and crystallized from AcOEt/Hexane to give the title compound as white crystals (27.0 mg).

Workup

extractionextracted with AcOEt
customThe organic layer was separated
dry with materialdried over MgSO4
concentrationconcentrated in vacuo
customThe residue was purified by prep
customHPLC and crystallized from AcOEt/Hexane

Sources & evidence

ORD record: ord-a6ff62ebd17d4a8ba9d61b939784102c
Source dataset: uspto-grants-2015_01
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08940758B2

Reaction notes

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