2-Bromoethanol → HCID 44224460, compound

HRID 1914556Notes

Reaction equation

HRID 1914556 reaction equation
[CH3:1][C:2]1([CH3:21])[CH2:8][CH2:7][CH2:6][N:5]([C:9]([C:11]2[CH:15]=[C:14]([C:16]3[CH:17]=[N:18][NH:19][CH:20]=3)[S:13][CH:12]=2)=[O:10])[CH2:4][CH2:3]1.C(=O)([O-])[O-].[K+].[K+].Br[CH2:29][CH2:30][OH:31]>CN(C=O)C>[CH3:1][C:2]1([CH3:21])[CH2:8][CH2:7][CH2:6][N:5]([C:9]([C:11]2[CH:15]=[C:14]([C:16]3[CH:17]=[N:18][N:19]([CH2:29][CH2:30][OH:31])[CH:20]=3)[S:13][CH:12]=2)=[O:10])[CH2:4][CH2:3]1

Participants

5

Reactant 3

HCID 108982-BromoethanolHCID 11430Potassium CarbonateHCID 44224458HCID 44224458, compound

Product 1

HCID 44224460HCID 44224460, compoundYield 23%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Conditions

Temperature
100 °C

Procedure

(4,4-Dimethyl-azepan-1-yl)-[5-(1H-pyrazol-4-yl)-thiophen-3-yl]-methanone (0.075 g, 0.25 mmol) was dissolved in DMF (1 mL) and potassium carbonate (44 mg, 0.32 mmol) was added followed by 2-bromoethanol (27 μL, 0.38 mmol). The reaction mixture was heated at 100° C. overnight then quenched by addition of ammonium chloride. The mixture was extracted with ethyl acetate (×2) then the organics were washed with lithium chloride (15% aqueous solution) and evaporated. The crude material was purified by chromatography on a silica II cartridge, eluting with 10-66% ethyl acetate in cyclohexane. The residue was purified by HPLC, eluting with 10%-98% acetonitrile in water (0.1% formic acid) over 20 minutes. The fractions containing the desired product were concentrated under vacuum and freeze-dried to give the title compound as a colourless oil (0.020 g). LCMS m/z 348.29 [M+H]+ R.T.=8.62 min (Analytical Method 2).

Workup

  1. customthen quenched by addition of ammonium chloride
  2. extractionThe mixture was extracted with ethyl acetate (×2)
  3. washthe organics were washed with lithium chloride (15% aqueous solution)
  4. customevaporated
  5. customThe crude material was purified by chromatography on a silica II cartridge
  6. washeluting with 10-66% ethyl acetate in cyclohexane
  7. customThe residue was purified by HPLC
  8. washeluting with 10%-98% acetonitrile in water (0.1% formic acid) over 20 minutes
  9. additionThe fractions containing the desired product
  10. concentrationwere concentrated under vacuum
  11. customfreeze-dried

Sources & evidence

ORD record
ord-637470d03e204f62af6e2d1176618c5b
Source dataset
uspto-grants-2013_12
Patent number
US08614209B2

Reaction notes

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