Methanesulfonyl chloride → HCID 57786209, compound

HRID 1628662Notes

Reaction equation

HRID 1628662 reaction equation
[Cl:1][C:2]1[CH:7]=[C:6]([Cl:8])[CH:5]=[CH:4][C:3]=1[NH:9][C:10]1[N:14]([CH2:15][CH:16]([OH:19])[CH2:17]O)[C:13]2[C:20]([N:24]([CH2:27][CH3:28])[CH2:25][CH3:26])=[CH:21][CH:22]=[CH:23][C:12]=2[N:11]=1.CS(Cl)(=O)=O>N1C=CC=CC=1>[Cl:1][C:2]1[CH:7]=[C:6]([Cl:8])[CH:5]=[CH:4][C:3]=1[N:9]1[C:10]2=[N:11][C:12]3[CH:23]=[CH:22][CH:21]=[C:20]([N:24]([CH2:25][CH3:26])[CH2:27][CH3:28])[C:13]=3[N:14]2[CH2:15][CH:16]([OH:19])[CH2:17]1

Participants

4

Reactant 2

HCID 31297Methanesulfonyl chloride2×HCID 68762907HCID 68762907, compound

Product 1

HCID 57786209HCID 57786209, compoundYield 47%

Reagents, catalysts & solvents 1

HCID 1049PyridineSolvent

Procedure

To a solution of 3-[2-[(2,4-dichlorophenyl)amino]-7-(diethylamino)-1H-benzimidazol-1-yl]propane-1,2-diol (Reference Example 88; 46.2 mg, 0.109 mmol) in pyridine (1 mL) was added methanesulfonyl chloride (0.0127 mL, 0.164 mmol) at 0° C. After 5 hr, the mixture was warmed up to room temperature. After 1 hr, methanesulfonyl chloride (0.0042 mL, 0.0545 mmol) was added, and the mixture was stirred for additional 1 hr. The reaction mixture was quenched with aqueous sodium hydrogen carbonate and extracted with ethyl acetate. The organic layer was washed with brine, dried over anhydrous sodium sulfate, filtered and concentrated in vacuo. The residue was purified by flash column chromatography on NH-silica gel eluting with a 20-80% ethyl acetate/n-hexane gradient mixture to give the title compound as a colorless solid (20.6 mg, 0.0512 mmol, 47%). Analytically pure material was obtained by recrystallization from methanol/ethyl acetate.

Workup

  1. waitAfter 1 hr
  2. customThe reaction mixture was quenched with aqueous sodium hydrogen carbonate
  3. extractionextracted with ethyl acetate
  4. washThe organic layer was washed with brine
  5. dry with materialdried over anhydrous sodium sulfate
  6. filtrationfiltered
  7. concentrationconcentrated in vacuo
  8. customThe residue was purified by flash column chromatography on NH-silica gel eluting with a 20-80% ethyl acetate/n-hexane gradient mixture

Sources & evidence

ORD record
ord-cd9a3f2f9f2e4112877a764f01bbd4c2
Source dataset
uspto-grants-2014_07
Patent number
US08785460B2

Reaction notes

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