1-(5,6-dichloro-1H-benzoimidazol-2-yl)-2,2,2-trifluoro-ethanone → HCID 58333149, compound

HRID 2080628Notes

Reaction equation

HRID 2080628 reaction equation
[Cl:1][C:2]1[C:16]([Cl:17])=[CH:15][C:5]2[NH:6][C:7]([C:9](=[O:14])[C:10]([F:13])([F:12])[F:11])=[N:8][C:4]=2[CH:3]=1.[CH2:18]([Mg]Br)[CH2:19][CH:20]=[CH2:21]>C1COCC1.CCOCC>[Cl:17][C:16]1[C:2]([Cl:1])=[CH:3][C:4]2[NH:8][C:7]([C:9]([OH:14])([CH2:21][CH2:20][CH:19]=[CH2:18])[C:10]([F:13])([F:11])[F:12])=[N:6][C:5]=2[CH:15]=1

Participants

5

Reactant 2

HCID 115943701-(5,6-dichloro-1H-benzoimidazol-2-yl)-2,2,2-trifluoro-ethanoneHCID 178418797HCID 178418797, compound

Product 1

HCID 58333149HCID 58333149, compound

Reagents, catalysts & solvents 2

HCID 3283Diethyl EtherSolventHCID 8028TetrahydrofuranSolvent

Conditions

Temperature
0 °C

Procedure

To 1-(5,6-dichloro-1H-benzoimidazol-2-yl)-2,2,2-trifluoro-ethanone (595 mg) in THF (3 mL) at −78° C. was added 3-butenyl magnesium bromide (7.8 mL of 0.5 M in THF) dropwise. The resulting mixture was then stirred at 0° C. for 4 hr. The reaction was quenched with H2O and 1 N HCl, extracted with EtOAc, dried over Na2SO4, filtered, and concentrated to yield a residue. The residue was purified by flash chromatography with Biotage 40s+ column and elution with 10%-40% EtOAc/hexanes to yield a yellow solid. The yellow solid was dissolved in a minimal amount of Et2O and triturated with hexanes to yield the title compound as a tan solid.

Workup

  1. customThe reaction was quenched with H2O and 1 N HCl
  2. extractionextracted with EtOAc
  3. dry with materialdried over Na2SO4
  4. filtrationfiltered
  5. concentrationconcentrated
  6. customto yield a residue
  7. customThe residue was purified by flash chromatography with Biotage 40s+ column and elution with 10%-40% EtOAc/hexanes
  8. customto yield a yellow solid
  9. customtriturated with hexanes

Sources & evidence

ORD record
ord-5315684c27a24c3eb5ff5566111f5b32
Source dataset
uspto-grants-2011_04
Patent number
US07932399B2

Reaction notes

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