Reaktion #88362

Reaktionsgleichung

pyridine

propane-1-sulfonyl chloride

(3-amino-2,6-difluoro-phenyl)-(5-bromo-1H-pyrrolo[2,3-b]pyridin-3-yl)-methanone

dichloromethane

pyridine

propane-1-sulfonyl chloride

→

desired compound

Ausbeute 50.0%

propane-1-sulfonic acid [3-(5-bromo-1H-pyrrolo[2,3-b]pyridine-3-carbonyl)-2,4-difluoro-phenyl]-amide

Ausbeute 50.0%

Lösungsmittel

water

Reaktionsbedingungen

Aufarbeitung

1. 1
   workup.ADDITIONis added
2. 2
   workup.STIRRINGThe reaction is stirred at room temperature another 3 hours
3. 3
   Extraktionextracted 3×250 mL with dichloromethane
4. 4
   Waschenwashed with 250 mL of brine
5. 5
   Trocknendried over magnesium sulfate
6. 6
   Filtrationfiltered
7. 7
   Einengenthe filtrate concentrated under vacuum
8. 8
   SonstigeThe resulting material is purified by silica gel column chromatography
9. 9
   Wascheneluting with a gradient of ethyl acetate
10. 10
    Einengenconcentrated under vacuum

Vorschrift

Into a reaction flask under nitrogen, (3-amino-2,6-difluoro-phenyl)-(5-bromo-1H-pyrrolo[2,3-b]pyridin-3-yl)-methanone (7, 13.00 g, 36.9 mmol) is combined with 150 mL of dichloromethane and anhydrous pyridine (5.84 g, 73.8 mmol), and propane-1-sulfonyl chloride (8, 6.05 g, 42.5 mmol) is added. The reaction is stirred at room temperature overnight, and additional pyridine (1.46 g, 18.5 mmol) and propane-1-sulfonyl chloride (1.51 g, 10.6 mmol) are added. The reaction is stirred at room temperature another 3 hours, then diluted with 500 mL of water and extracted 3×250 mL with dichloromethane. The organic layers are combined and washed with 250 mL of brine, dried over magnesium sulfate, filtered and the filtrate concentrated under vacuum. The resulting material is purified by silica gel column chromatography, eluting with a gradient of ethyl acetate:hexane. Appropriate fractions are combined and concentrated under vacuum to provide the desired compound (9, 8.41 g, 50%).

Quelle