Hydrogen chloride-ethyl acetate → 1-{4-fluoro-5-(2-fluoropyridin-3-yl)-1-[(3-methylpyridin-2-yl)sulfonyl]-1H-pyrrol-3-yl}-N-methylmethanamine

HRID 880862

反応式

HRID 880862 の反応式
[F:1][C:2]1[C:3]([CH2:24][N:25](C)[C:26](=O)OC(C)(C)C)=[CH:4][N:5]([S:14]([C:17]2[C:22]([CH3:23])=[CH:21][CH:20]=[CH:19][N:18]=2)(=[O:16])=[O:15])[C:6]=1[C:7]1[C:8]([F:13])=[N:9][CH:10]=[CH:11][CH:12]=1.C(OCC)(=O)C.Cl>C(OCC)(=O)C.CC(O)C>[F:1][C:2]1[C:3]([CH2:24][NH:25][CH3:26])=[CH:4][N:5]([S:14]([C:17]2[C:22]([CH3:23])=[CH:21][CH:20]=[CH:19][N:18]=2)(=[O:16])=[O:15])[C:6]=1[C:7]1[C:8]([F:13])=[N:9][CH:10]=[CH:11][CH:12]=1

参加物

5

反応物 2

HCID 21866389Hydrogen chloride-ethyl acetateHCID 67177461tert-Butyl ({4-fluoro-5-(2-fluoropyridin-3-yl)-1-[(3-methylpyridin-2-yl)sulfonyl]-1H-pyrrol-3-yl}methyl)methylcarbamate

生成物 1

HCID 670842571-{4-fluoro-5-(2-fluoropyridin-3-yl)-1-[(3-methylpyridin-2-yl)sulfonyl]-1H-pyrrol-3-yl}-N-methylmethanamine収率 54%

試薬・触媒・溶媒 2

HCID 3776Isopropanol溶媒HCID 8857Ethyl Acetate溶媒

実験手順

To a solution of tert-butyl ({4-fluoro-5-(2-fluoropyridin-3-yl)-1-[(3-methylpyridin-2-yl)sulfonyl]-1H-pyrrol-3-yl}methyl)methylcarbamate (107 mg) in ethyl acetate (2 mL) and 2-propanol (1 mL) were added 4 mol/L hydrogen chloride-ethyl acetate solution (3 mL), and the mixture was stirred at room temperature for 1 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. Combined organic layers were 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=4:1→1:1) to give 1-{4-fluoro-5-(2-fluoropyridin-3-yl)-1-[(3-methylpyridin-2-yl)sulfonyl]-1H-pyrrol-3-yl}-N-methylmethanamine as a pale-yellow oil (yield 45 mg, 54%). A solution of the obtained 1-{4-fluoro-5-(2-fluoropyridin-3-yl)-1-[(3-methylpyridin-2-yl)sulfonyl]-1H-pyrrol-3-yl}-N-methylmethanamine in ethyl acetate (2 mL) was added dropwise to a solution of fumaric acid (14 mg) in ethanol (2 mL) and the mixture was concentrated under reduced pressure. The residue was recrystallized from ethyl acetate-ethanol to give the title compound as a white solid (yield 51 mg, 88%).

後処理

  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. washCombined organic layers were 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=4:1→1:1)

出典と根拠

ORDレコード
ord-8e021b04a8ff426cad8f87bd6ce8378a
出典データセット
uspto-grants-2015_03
特許番号
US08993598B2

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