Sodium hydride → tert-butyl {[1-{[5-(1,3-dioxolan-2-yl)-2-furyl]sulfonyl}-4-fluoro-5-(2-fluoropyridin-3-yl)-1H-pyrrol-3-yl]methyl}methylcarbamate

HRID 1426740ノート

反応式

HRID 1426740 の反応式
[H-].[Na+].[F:3][C:4]1[C:9]([C:10]2[NH:14][CH:13]=[C:12]([CH2:15][N:16]([CH3:24])[C:17](=[O:23])[O:18][C:19]([CH3:22])([CH3:21])[CH3:20])[C:11]=2[F:25])=[CH:8][CH:7]=[CH:6][N:5]=1.[CH2:26]1OCCOCCOCCOCCOC1.Cl[S:42]([C:45]1[O:49][C:48]([C:50]([O:52][CH3:53])=[O:51])=[CH:47][CH:46]=1)(=[O:44])=[O:43]>O1CCCC1>[O:51]1[CH2:26][CH2:53][O:52][CH:50]1[C:48]1[O:49][C:45]([S:42]([N:14]2[C:10]([C:9]3[C:4]([F:3])=[N:5][CH:6]=[CH:7][CH:8]=3)=[C:11]([F:25])[C:12]([CH2:15][N:16]([CH3:24])[C:17](=[O:23])[O:18][C:19]([CH3:21])([CH3:22])[CH3:20])=[CH:13]2)(=[O:44])=[O:43])=[CH:46][CH:47]=1

参加物

6

反応物 4

HCID 24758Sodium hydrideHCID 3633615-Crown-5HCID 2736845Methyl 5-(Chlorosulfonyl)-2-FuroateHCID 67176761tert-butyl {[4-fluoro-5-(2-fluoropyridin-3-yl)-1H-pyrrol-3-yl]methyl}methylcarbamate

生成物 1

HCID 67396617tert-butyl {[1-{[5-(1,3-dioxolan-2-yl)-2-furyl]sulfonyl}-4-fluoro-5-(2-fluoropyridin-3-yl)-1H-pyrrol-3-yl]methyl}methylcarbamate収率 78%

試薬・触媒・溶媒 1

HCID 8028Tetrahydrofuran溶媒2 回

実験手順

To a suspension of sodium hydride (60% in oil, 155 mg) in tetrahydrofuran (10 mL) was added tert-butyl {[5-(2-fluoropyridin-3-yl)-4-fluoro-1H-pyrrol-3-yl]methyl}methylcarbamate (1.04 g) under ice-cooling and the mixture was stirred for 15 min. 15-Crown-5 (354 mg) and a solution of methyl 5-(chlorosulfonyl)-2-furoate in tetrahydrofuran (2 mL) were added dropwise and the mixture was further stirred at room temperature for 1.5 hr. The reaction mixture was concentrated under reduced pressure, and the residue was diluted with water, 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 silica gel column chromatography (eluent: hexane-ethyl acetate=4:1→1:1) to give the title compound as a brown oil (yield 1.33 g, 78%).

後処理

  1. temperaturecooling
  2. stirringthe mixture was further stirred at room temperature for 1.5 hr
  3. concentrationThe reaction mixture was concentrated under reduced pressure
  4. additionthe residue was diluted with water
  5. extractionextracted with ethyl acetate
  6. extractionThe separated aqueous layer was extracted again with ethyl acetate
  7. washThe combined organic layer was washed with saturated brine
  8. dry with materialdried over anhydrous magnesium sulfate
  9. concentrationconcentrated under reduced pressure
  10. customThe residue was purified by silica gel column chromatography (eluent: hexane-ethyl acetate=4:1→1:1)

出典と根拠

ORDレコード
ord-8dae8b4da7794830b0e112701aee1912
出典データセット
uspto-grants-2015_01
特許番号
US08933105B2

反応ノート

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