4-Toluenesulfonyl chloride → (2R)-(4E)-5-(3-Pyridyl)4-penten-2-ol p-Toluenesulfonate

HRID 1711509Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1711509
[N:1]1[CH:6]=[CH:5][CH:4]=[C:3](/[CH:7]=[CH:8]/[CH2:9][C@H:10]([OH:12])[CH3:11])[CH:2]=1.[C:13]1([CH3:23])[CH:18]=[CH:17][C:16]([S:19](Cl)(=[O:21])=[O:20])=[CH:15][CH:14]=1>N1C=CC=CC=1>[C:13]1([CH3:23])[CH:18]=[CH:17][C:16]([S:19]([O:12][C@@H:10]([CH2:9]/[CH:8]=[CH:7]/[C:3]2[CH:2]=[N:1][CH:6]=[CH:5][CH:4]=2)[CH3:11])(=[O:21])=[O:20])=[CH:15][CH:14]=1

Komponenten

4

Edukt 2

HCID 73974-Toluenesulfonyl chlorideHCID 66745560(2R)-(4E)-5-(3-pyridyl)4-penten-2-ol

Produkt 1

HCID 87466997(2R)-(4E)-5-(3-Pyridyl)4-penten-2-ol p-Toluenesulfonate

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 1049PyridineLösungsmittel

Versuchsvorschrift

To a stirring solution of (2R)-(4E)-5-(3-pyridyl)-4-penten-2-ol (6.00 g, 36.81 mmol) in dry pyridine (30 mL) at 0° C. was added p-toluenesulfonyl chloride (21.05 g, 110.43 mmol). The reaction mixture was stirred for 24 h at ambient temperature. The pyridine was removed by rotary evaporation. Toluene (50 mL) was added to the residue and subsequently removed by rotary evaporation. The crude product was stirred with a saturated solution of sodium bicarbonate (100 mL) and extracted with chloroform (3×100 mL). The combined chloroform extracts were dried over sodium sulfate, filtered, and concentrated by rotary evaporation to give 11.67 g (84.0%) of a dark-brown, viscous oil.

Aufarbeitung

  1. customThe pyridine was removed by rotary evaporation
  2. additionToluene (50 mL) was added to the residue
  3. customsubsequently removed by rotary evaporation
  4. stirringThe crude product was stirred with a saturated solution of sodium bicarbonate (100 mL)
  5. extractionextracted with chloroform (3×100 mL)
  6. dry with materialThe combined chloroform extracts were dried over sodium sulfate
  7. filtrationfiltered
  8. concentrationconcentrated by rotary evaporation
  9. customto give 11.67 g (84.0%) of a dark-brown, viscous oil

Quellen und Nachweise

ORD-Eintrag
ord-61c9d86974c6493da5ac992700a0dc24
Quelldatensatz
uspto-grants-2010_09
Patentnummer
US07790757B2

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