Hydrogen chloride-ethyl acetate → 1-{5-(2-fluoropyridin-3-yl)-1-[(6-methylpyridin-3-yl)sulfonyl]-1H-pyrrol-3-yl}-N-methylmethanamine

HRID 2090789Notes

Reaction equation

HRID 2090789 reaction equation
[F:1][C:2]1[C:7]([C:8]2[N:12]([S:13]([C:16]3[CH:17]=[N:18][C:19]([CH3:22])=[CH:20][CH:21]=3)(=[O:15])=[O:14])[CH:11]=[C:10]([CH2:23][N:24](C)[C:25](=O)OC(C)(C)C)[CH:9]=2)=[CH:6][CH:5]=[CH:4][N:3]=1.C(OCC)(=O)C.Cl>C(O)C>[F:1][C:2]1[C:7]([C:8]2[N:12]([S:13]([C:16]3[CH:17]=[N:18][C:19]([CH3:22])=[CH:20][CH:21]=3)(=[O:14])=[O:15])[CH:11]=[C:10]([CH2:23][NH:24][CH3:25])[CH:9]=2)=[CH:6][CH:5]=[CH:4][N:3]=1

Participants

4

Reactant 2

HCID 21866389Hydrogen chloride-ethyl acetateHCID 66974551tert-butyl ({5-(2-fluoropyridin-3-yl)-1-[(6-methylpyridin-3-yl)sulfonyl]-1H-pyrrol-3-yl}methyl)methylcarbamate

Product 1

HCID 250026371-{5-(2-fluoropyridin-3-yl)-1-[(6-methylpyridin-3-yl)sulfonyl]-1H-pyrrol-3-yl}-N-methylmethanamine

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent

Procedure

To a solution of tert-butyl ({5-(2-fluoropyridin-3-yl)-1-[(6-methylpyridin-3-yl)sulfonyl]-1H-pyrrol-3-yl}methyl)methylcarbamate (86 mg) in ethanol (2 mL) was added a 4 mol/L hydrogen chloride-ethyl acetate solution (2 mL) at room temperature. The mixture was stirred for 2 hr, and concentrated under reduced pressure. The residue was basified with a saturated aqueous sodium hydrogencarbonate solution, and the mixture was extracted with ethyl acetate. The extract was washed successively with a saturated aqueous sodium hydrogencarbonate solution, water and saturated brine, dried over anhydrous sodium sulfate, and concentrated under reduced pressure to give a free salt of the title compound as a pale-yellow oil. The obtained free salt was dissolved in ethyl acetate (2 mL) and added to a solution (2 mL) of fumaric acid (11.3 mg) in ethanol, and the solvent was evaporated under reduced pressure. The residue was recrystallized from ethanol to give the title compound as colorless crystals (yield 14 mg, 18%).

Workup

  1. concentrationconcentrated under reduced pressure
  2. extractionthe mixture was extracted with ethyl acetate
  3. washThe extract was washed successively with a saturated aqueous sodium hydrogencarbonate solution, water and saturated brine
  4. dry with materialdried over anhydrous sodium sulfate
  5. concentrationconcentrated under reduced pressure

Sources & evidence

ORD record
ord-2c0d202c7ac24fe790bd9da13db8ed08
Source dataset
uspto-grants-2013_05
Patent number
US08436187B2

Reaction notes

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