Water → HCID 14752582, Verbindung

HRID 350482Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 350482
[CH2:1]([O:8][CH2:9][C@H:10]1[O:12][CH2:11]1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[CH2:13]([Mg]Cl)[CH:14]=[CH2:15].O>C1COCC1>[CH2:1]([O:8][CH2:9][C@H:10]([OH:12])[CH2:11][CH2:15][CH:14]=[CH2:13])[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1

Komponenten

5

Edukt 3

HCID 962WaterHCID 146296(+)-Benzyl glycidyl etherHCID 178418473HCID 178418473, Verbindung

Produkt 1

HCID 14752582HCID 14752582, VerbindungAusbeute 35 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8028TetrahydrofuranLösungsmittel

Versuchsvorschrift

To a stirred solution of benzyl-(S)-glycidyl ether (5.0 g, 30.5 mmol) in THF (100 ml) was added allylmagnesium chloride (1.0 M in Et2O, 30.5 ml, 30.5 mmol) at −78° C., and the resulting mixture was gradually warmed up to rt with stirring. The mixture was poured into water and concentrated in vacuo, then extracted with CHCl3. The organic layer was dried over anhydrous Na2SO4 and concentrated in vacuo. The residue was chromatographed on silica gel with hexane-EtOAc (5:1) as eluent to give 1-benzyloxy-2-(R)-hydroxy-5-hexene (2.18 g, 35%) as a colorless oil: 1H-NMR (CDCl3) δ 1.52–1.60 (m, 2 H), 2.11–2.25 (m, 2 H), 2.34 (d, J=3.2 Hz, 1 H), 3.35 (dd, J=9.6, 8.0 Hz, 1 H), 3.52 (dd, J=9.6, 3.2 Hz, 1 H), 3.84–3.86 (m, 1 H), 4.57.(s, 2 H), 4.96–5.07 (series of m, 2 H), 5.78–5.88 (m, 1 H), 7.29–7.38 (m, 5 H); MS (ESI) m/z, 224 (M++NH4+).

Aufarbeitung

  1. concentrationconcentrated in vacuo
  2. extractionextracted with CHCl3
  3. dry with materialThe organic layer was dried over anhydrous Na2SO4
  4. concentrationconcentrated in vacuo
  5. customThe residue was chromatographed on silica gel with hexane-EtOAc (5:1) as eluent

Quellen und Nachweise

ORD-Eintrag
ord-03bf08d9928c47139d0e067f19be5f73
Quelldatensatz
uspto-grants-2007_02
Patentnummer
US07179819B2

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