Sodium hydride → 3-(3-Bromo-6,7-dihydro-5H-[1]pyrindin-7-yl)-2-ethyl-5,7-dimethyl-3H-imidazo[4,5-b]pyridine

HRID 1742425Notes

Reaction equation

[H-].[Na+].[CH2:3]([C:5]1[NH:15][C:8]2=[N:9][C:10]([CH3:14])=[CH:11][C:12]([CH3:13])=[C:7]2[N:6]=1)[CH3:4].[Br:16][C:17]1[CH:18]=[N:19][C:20]2[CH:21](Cl)[CH2:22][CH2:23][C:24]=2[CH:25]=1.[Na+].[Br-]>O1CCOCC1>[Br:16][C:17]1[CH:18]=[N:19][C:20]2[CH:21]([N:15]3[C:8]4=[N:9][C:10]([CH3:14])=[CH:11][C:12]([CH3:13])=[C:7]4[N:6]=[C:5]3[CH2:3][CH3:4])[CH2:22][CH2:23][C:24]=2[CH:25]=1

Participants

Conditions

Temperature: 100 °C

Procedure

To a solution of NaH, 60% in oil, (163 mg) in 3 mL of 1,4-dioxane was added 2-ethyl-5,7-dimethyl-3H-imidazo[4,5-b]pyridine (1.1 gm) at room temperature and stirred for 30 minutes. Then 3-bromo-7-chloro-6,7-dihydro-5H-[1]pyrindine (500 mg, 2.15 mM) in 2 mL of 1,4-dioxane and anhydrous NaBr (442 mg) were added to the solution and the reaction was heated to 100° C. for 24 hours. The reaction was then cooled to room temperature, concentrated to dryness, and extracted into ethyl acetate from water. The organic layers were dried over MgSO4, filtered, and evaporated to dryness. The residue was purified by chromatography on silica gel to yield 110 mg of product.

Workup

temperatureThe reaction was then cooled to room temperature
concentrationconcentrated to dryness
extractionextracted into ethyl acetate from water
dry with materialThe organic layers were dried over MgSO4
filtrationfiltered
customevaporated to dryness
customThe residue was purified by chromatography on silica gel

Sources & evidence

ORD record: ord-0ba5798fcf0c4766be13fff8fba00fe5
Source dataset: uspto-grants-1994_08
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US05338740

Reaction notes

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