Sodium hydride → 4-chloro-5-(2-fluoropyridin-3-yl)-1-(pyridin-3-ylsulfonyl)-1H-pyrrole-3-carbaldehyde

HRID 2090751Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 2090751
[Cl:1][C:2]1[C:3]([CH:14]=[O:15])=[CH:4][NH:5][C:6]=1[C:7]1[C:8]([F:13])=[N:9][CH:10]=[CH:11][CH:12]=1.[H-].[Na+].C1OCCOCCOCCOCCOC1.[N:33]1[CH:38]=[CH:37][CH:36]=[C:35]([S:39](Cl)(=[O:41])=[O:40])[CH:34]=1>O1CCCC1.[Cl-].[Na+].O>[Cl:1][C:2]1[C:3]([CH:14]=[O:15])=[CH:4][N:5]([S:39]([C:35]2[CH:34]=[N:33][CH:38]=[CH:37][CH:36]=2)(=[O:41])=[O:40])[C:6]=1[C:7]1[C:8]([F:13])=[N:9][CH:10]=[CH:11][CH:12]=1

Komponenten

7

Edukt 4

HCID 24758Sodium hydrideHCID 3633615-Crown-5HCID 3164136Pyridine-3-sulfonyl chlorideHCID 866239794-chloro-5-(2-fluoropyridin-3-yl)-1H-pyrrole-3-carbaldehyde

Produkt 1

HCID 866310044-chloro-5-(2-fluoropyridin-3-yl)-1-(pyridin-3-ylsulfonyl)-1H-pyrrole-3-carbaldehydeAusbeute 81,4 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 8028TetrahydrofuranLösungsmittelHCID 57417360Sodium chloride; waterLösungsmittel

Versuchsvorschrift

To a solution (20 mL) of 4-chloro-5-(2-fluoropyridin-3-yl)-1H-pyrrole-3-carbaldehyde (270 mg) in tetrahydrofuran was added sodium hydride (60% in oil, 100 mg) at room temperature and the mixture was stirred for 30 min. 15-Crown-5 (530 mg) was added dropwise and the mixture was stirred for 30 min. 3-Pyridylsulfonyl chloride (321 mg) was added, and the mixture was further stirred for 1 hr. The reaction mixture was diluted with saturated brine, and the mixture was extracted with ethyl acetate. The extract 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=1:1→1:4), and crystallized from diethyl ether to give the title compound as colorless crystals (yield 358 mg, 81%).

Aufarbeitung

  1. stirringthe mixture was stirred for 30 min
  2. stirringthe mixture was further stirred for 1 hr
  3. extractionthe mixture was extracted with ethyl acetate
  4. washThe extract was washed with saturated brine
  5. dry with materialdried over anhydrous magnesium sulfate
  6. concentrationconcentrated under reduced pressure
  7. customThe residue was purified by silica gel column chromatography (eluent: hexane-ethyl acetate=1:1→1:4)
  8. customcrystallized from diethyl ether

Quellen und Nachweise

ORD-Eintrag
ord-c8c20c54014446c78bbfb9e883c1386f
Quelldatensatz
uspto-grants-2013_05
Patentnummer
US08436187B2

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