Triethylamine → HCID 21844643, Verbindung

HRID 1738624Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1738624
[CH:1]([CH2:3][CH2:4][CH2:5][CH:6]1[O:11][CH:10]([OH:12])[CH2:9][CH2:8][CH2:7]1)=[O:2].CCN(CC)CC.[Si:20](Cl)([C:23]([CH3:26])([CH3:25])[CH3:24])([CH3:22])[CH3:21]>CN(C1C=CN=CC=1)C.C(Cl)Cl>[CH:1]([CH2:3][CH2:4][CH2:5][CH:6]1[O:11][CH:10]([O:12][Si:20]([C:23]([CH3:26])([CH3:25])[CH3:24])([CH3:22])[CH3:21])[CH2:9][CH2:8][CH2:7]1)=[O:2]

Komponenten

6

Edukt 3

HCID 8471TriethylamineHCID 28928tert-Butyldimethylsilyl chlorideHCID 21844652HCID 21844652, Verbindung

Produkt 1

HCID 21844643HCID 21844643, VerbindungAusbeute 90 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 142844-(Dimethylamino)pyridineKatalysatorHCID 6344DichloromethaneLösungsmittel2×

Reaktionsbedingungen

Temperatur
0 °C

Versuchsvorschrift

In a 25 mL round bottomed flask was placed a solution of 6-(3-formylpropyl)-2-hydroxytetrahydropyran (153 mg, 0.89 mmol), DMAP (5 mg), and Et3N (0.4 mL) in CH2Cl2 (10 mL). The solution was cooled to 0° C., and tert-butyldimethylsilyl chloride (205 mg, 1.34 mmol) in CH2Cl2 (3 mL) was added dropwise. The reaction mixture was allowed to warm to room temperature overnight, and then the solvent was removed under reduced pressure. Ether was added and the organic layer was washed with saturated NH4Cl twice followed by brine, dried over anhydrous magnesium sulfate, and then concentrated in vacuo. The residue was submitted to column chromatography on silica gel to afford 6-(3-formylpropyl)-2-(tert-butyldimethylsiloxy)tetrahydropyran as a clear yellow oil (206 mg, 90% yield): 1H NMR (CDCl3) δ 0.09 (s, 3H), 0.10 (s, 3H), 0.89 (s, 9H), 1.19-1.73 (m, 10H), 2.43 (m, 2H), 3.34 (t, 1H, J=5.7 Hz), 4.63 (d, 1H, J=9 Hz), 9.74 (s, 1H); 13C NMR (CDCl3) δ -4.0, 18.14, 18.41, 22.21, 25.81, 30.61, 33.83, 35.25, 43.70, 75.70, 97.26, 202.63. HRMS [CI (CH4)] calcd for C15H29O3Si: 285.1886 (M-H,)+. Found: 285.1890 (Δ-1.4 ppm).

Aufarbeitung

  1. customIn a 25 mL round bottomed flask was placed
  2. temperatureto warm to room temperature overnight
  3. customthe solvent was removed under reduced pressure
  4. additionEther was added
  5. washthe organic layer was washed with saturated NH4Cl
  6. dry with materialdried over anhydrous magnesium sulfate
  7. concentrationconcentrated in vacuo

Quellen und Nachweise

ORD-Eintrag
ord-243e160641584dbda79ae6354b51a544
Quelldatensatz
uspto-grants-1999_10
Patentnummer
US05962744

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