Hydrogen chloride-ethyl acetate → HCID 86624012, compound

HRID 1426799Notes

Reaction equation

HRID 1426799 reaction equation
[Cl:1][C:2]1[C:7]([C:8]2[N:12]([S:13]([C:16]3[CH:21]=[CH:20][CH:19]=[C:18]([C:22]#[N:23])[CH:17]=3)(=[O:15])=[O:14])[CH:11]=[C:10]([CH2:24][N:25](C)[C:26](=O)OC(C)(C)C)[C:9]=2[F:34])=[CH:6][CH:5]=[CH:4][N:3]=1.C(OCC)(=O)C.Cl>C(OCC)(=O)C.CC(O)C>[Cl:1][C:2]1[C:7]([C:8]2[N:12]([S:13]([C:16]3[CH:17]=[C:18]([CH:19]=[CH:20][CH:21]=3)[C:22]#[N:23])(=[O:14])=[O:15])[CH:11]=[C:10]([CH2:24][NH:25][CH3:26])[C:9]=2[F:34])=[CH:6][CH:5]=[CH:4][N:3]=1

Participants

5

Reactant 2

HCID 21866389Hydrogen chloride-ethyl acetateHCID 86623996HCID 86623996, compound

Product 1

HCID 86624012HCID 86624012, compoundYield 39%

Reagents, catalysts & solvents 2

HCID 3776IsopropanolSolventHCID 8857Ethyl AcetateSolvent

Procedure

To a solution of tert-butyl ({5-(2-chloropyridin-3-yl)-1-[(3-cyanophenyl)sulfonyl]-4-fluoro-1H-pyrrol-3-yl}methyl)methylcarbamate (489 mg) in ethyl acetate (3 mL) and 2-propanol (2 mL) was added 4 mol/L hydrogen chloride-ethyl acetate solution (6 mL), and the mixture was stirred at room temperature for 6 hr. The reaction mixture was concentrated under reduced pressure, and the residue was diluted with saturated aqueous sodium hydrogen carbonate solution, and extracted with ethyl acetate. The separated aqueous layer was extracted again with ethyl acetate. The combined organic layer was washed with saturated brine, dried over anhydrous magnesium sulfate, and concentrated under reduced pressure. The residue was purified by basic silica gel column chromatography (eluent: hexane-ethyl acetate=1:1→1:9) to give a free base of the title compound as a pale-yellow oil (yield 152 mg, 39%). A solution of the obtained free base in ethyl acetate (2 mL) was added dropwise to a solution of fumaric acid (44 mg) in ethanol (4 mL) and the mixture was concentrated under reduced pressure. The residue was recrystallized from ethanol to give the title compound as a white solid (yield 127 mg, 28%).

Workup

  1. concentrationThe reaction mixture was concentrated under reduced pressure
  2. additionthe residue was diluted with saturated aqueous sodium hydrogen carbonate solution
  3. extractionextracted with ethyl acetate
  4. extractionThe separated aqueous layer was extracted again with ethyl acetate
  5. washThe combined organic layer was washed with saturated brine
  6. dry with materialdried over anhydrous magnesium sulfate
  7. concentrationconcentrated under reduced pressure
  8. customThe residue was purified by basic silica gel column chromatography (eluent: hexane-ethyl acetate=1:1→1:9)

Sources & evidence

ORD record
ord-aabe7b90d0614537ba3b3edafd2dbabd
Source dataset
uspto-grants-2015_01
Patent number
US08933105B2

Reaction notes

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