(Z)-Benzaldehyde oxime → 5-(1-Hydroxypropyl)-3-phenylisoxazole

HRID 345176

Reaktionsgleichung

Reaktionsgleichung von HRID 345176
[CH:1](=[N:8][OH:9])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[CH:10]#[C:11][CH:12]([OH:15])[CH2:13][CH3:14].Cl[O-].[Na+]>ClCCl>[OH:15][CH:12]([C:11]1[O:9][N:8]=[C:1]([C:2]2[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=2)[CH:10]=1)[CH2:13][CH3:14]

Komponenten

5

Edukt 3

HCID 12143(Z)-Benzaldehyde oximeHCID 929811-Pentyn-3-olHCID 23665760Sodium Hypochlorite

Produkt 1

HCID 151807655-(1-Hydroxypropyl)-3-phenylisoxazole

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6344DichloromethaneLösungsmittel

Versuchsvorschrift

In 12.5 ml of dichloromethane, were dissolved 2.5 g (20.7 mmol) of benzaldoxime and 2.1 g (25.0 mmol) of 1-pentyne-3-ol. Under ice cooling, 14.5 g of a 12.0% aqueous solution of sodium hypochlorite were added dropwise addition, they were reacted at room temperature for 3 hours, followed by the extraction of the organic layer with dichloromethane. The extract was washed with water and the resulting organic layer was dried over anhydrous sodium sulfate. The solvent was distilled off under reduced pressure and the residue was purified by chromatography on a silica gel column (eluent: chloroform), whereby the target compound, namely, 5-(1-hydroxypropyl)-3-phenylisooxazole was obtained as crystals.

Aufarbeitung

  1. additionaddition, they
  2. customwere reacted at room temperature for 3 hours
  3. extractionfollowed by the extraction of the organic layer with dichloromethane
  4. washThe extract was washed with water
  5. dry with materialthe resulting organic layer was dried over anhydrous sodium sulfate
  6. distillationThe solvent was distilled off under reduced pressure
  7. customthe residue was purified by chromatography on a silica gel column (eluent: chloroform), whereby the target compound

Quellen und Nachweise

ORD-Eintrag
ord-d1f9f7dd98be4b859adaef1c8d9bb4dd
Quelldatensatz
uspto-grants-1991_10
Patentnummer
US05055585

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