Sodium hydride → 6-Bromoquinolin-2-yl-2,2,2-trifluoro-1-methylethyl methanesulfonate

HRID 1693073

Reaktionsgleichung

Reaktionsgleichung von HRID 1693073
[Br:1][C:2]1[CH:3]=[C:4]2[C:9](=[CH:10][CH:11]=1)[N:8]=[C:7]([C:12]([OH:18])([CH3:17])[C:13]([F:16])([F:15])[F:14])[CH:6]=[CH:5]2.[H-].[Na+].[CH3:21][S:22](Cl)(=[O:24])=[O:23]>C1COCC1>[CH3:21][S:22]([O:18][C:12]([C:7]1[CH:6]=[CH:5][C:4]2[C:9](=[CH:10][CH:11]=[C:2]([Br:1])[CH:3]=2)[N:8]=1)([CH3:17])[C:13]([F:15])([F:14])[F:16])(=[O:24])=[O:23]

Komponenten

5

Versuchsvorschrift

To a solution of of 2-(6-bromoquinolin-2-yl)-1,1,1-trifluoropropan-2-ol (1.93 g, 6.03 mmol) in THF (20 ml) was added sodium hydride (241 mg, 7.23 mmol) portionwise at 0° C. and the mixture was stirred at room temperature for 1 hour. A solution of methanesulfonyl chloride (829 mg, 7.23 mmol) in THF (2 ml) was added at 0°. Then the reaction mixture was stirred at room temperature for 16 hours. The mixture was quenched with saturated sodium bicarbonate aqueous solution, and the product was extracted with ethyl acetate which was dried over sodium sulfate. Then, filtration, evaporation and purification through silica gel column chromatography, eluting with hexane/ethyl acetate (15:1 to 5:1), furnished the title compound (1.11 g, 46% yield) as a white solid. 1H NMR (300 MHz, CDCl3) δ 2.45 (3H, s), 3.24 (3H, s), 7.81-7.86 (2H, m), 7.96-8.05 (2H, m), 8.17 (1H, d, J=8.8 Hz). MS (ESI): m/z 397, 399 (M+H)+.

Aufarbeitung

  1. stirringThen the reaction mixture was stirred at room temperature for 16 hours
  2. customThe mixture was quenched with saturated sodium bicarbonate aqueous solution
  3. extractionthe product was extracted with ethyl acetate which
  4. dry with materialwas dried over sodium sulfate
  5. filtrationThen, filtration, evaporation and purification through silica gel column chromatography
  6. washeluting with hexane/ethyl acetate (15:1 to 5:1)

Quellen und Nachweise

ORD-Eintrag
ord-cc783c4763174603acb41eb320c33e09
Quelldatensatz
uspto-grants-2012_04
Patentnummer
US08158650B2

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