Potassium Carbonate → HCID 57785785, compound

HRID 1628990Notes

Reaction equation

HRID 1628990 reaction equation
[Cl:1][C:2]1[CH:7]=[C:6]([Cl:8])[CH:5]=[CH:4][C:3]=1[CH:9]([OH:28])[C:10]1[N:14]([CH2:15][CH2:16][CH2:17]O)[C:13]2[C:19]([N:23]([CH2:26][CH3:27])[CH2:24][CH3:25])=[CH:20][CH:21]=[CH:22][C:12]=2[N:11]=1.CS(Cl)(=O)=O.C(=O)([O-])[O-].[K+].[K+]>N1C=CC=CC=1.C(OCC)(=O)C>[Cl:1][C:2]1[CH:7]=[C:6]([Cl:8])[CH:5]=[CH:4][C:3]=1[CH:9]1[C:10]2=[N:11][C:12]3[C:13](=[C:19]([N:23]([CH2:26][CH3:27])[CH2:24][CH3:25])[CH:20]=[CH:21][CH:22]=3)[N:14]2[CH2:15][CH2:16][CH2:17][O:28]1

Participants

6

Reactant 3

HCID 11430Potassium CarbonateHCID 31297Methanesulfonyl chlorideHCID 68763541HCID 68763541, compound

Product 1

HCID 57785785HCID 57785785, compoundYield 26%

Reagents, catalysts & solvents 2

HCID 1049PyridineSolventHCID 8857Ethyl AcetateSolvent2×

Conditions

Temperature
80 °C

Procedure

To a stirred solution of 3-{2-[(2,4-dichlorophenyl)(hydroxy)methyl]-7-(diethylamino)-1H-benzimidazol-1-yl}propan-1-ol (Reference example 207, 1.37 g, 3.24 mmol) in pyridine (16 mL) was added methanesulfonyl chloride (502 μL, 6.49 mol) at 0° C. After 1 h, the reaction mixture was diluted with ethyl acetate, washed with brine, dried over sodium sulfate, filtered, and concentrated in vacuo. The residue was dissolved in N,N-dimethylformamide (32 mL) and potassium carbonate (897 mg, 6.49 mmol) was added. After being stirred for 12 h at 80° C., the reaction mixture was diluted with ethyl acetate, washed with water and brine, dried over sodium sulfate, filtered and concentrated in vacuo. The residue was purified by column chromatography on silica gel eluting with a 0-20% ethyl acetate/n-hexane gradient mixture to give the title compound as a colorless solid (341 mg, 0.844 mmol, 26%).

Workup

  1. washwashed with brine
  2. dry with materialdried over sodium sulfate
  3. filtrationfiltered
  4. concentrationconcentrated in vacuo
  5. dissolutionThe residue was dissolved in N,N-dimethylformamide (32 mL)
  6. washwashed with water and brine
  7. dry with materialdried over sodium sulfate
  8. filtrationfiltered
  9. concentrationconcentrated in vacuo
  10. customThe residue was purified by column chromatography on silica gel eluting with a 0-20% ethyl acetate/n-hexane gradient mixture

Sources & evidence

ORD record
ord-53305bf5b9ad4a0b8bf91b101b7a6ba3
Source dataset
uspto-grants-2014_07
Patent number
US08785460B2

Reaction notes

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