Hydrochloric Acid → Neral

HRID 48549

Reaktionsgleichung

Reaktionsgleichung von HRID 48549
[CH3:1]/[C:2](/[CH2:6][CH2:7][CH:8]=[C:9]([CH3:11])[CH3:10])=[CH:3]/[CH2:4][OH:5].CC(C)[O-].[Al+3].CC(C)[O-].CC(C)[O-].[N+](C1C=CC=CC=1C=O)([O-])=O.Cl>C1C=CC=CC=1.C(OCC)(=O)C>[CH3:1]/[C:2](/[CH2:6][CH2:7][CH:8]=[C:9]([CH3:11])[CH3:10])=[CH:3]/[CH:4]=[O:5]

Komponenten

7

Edukt 4

HCID 313Hydrochloric AcidHCID 111012-NitrobenzaldehydeHCID 11143Aluminum isopropoxideHCID 643820Nerol

Produkt 1

HCID 643779NeralAusbeute 83 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 241BenzeneLösungsmittelHCID 8857Ethyl AcetateLösungsmittel

Versuchsvorschrift

(2Z)-3,7-Dimethyl-2,6-octadien-1-ol (310 mg, 2.0 mmol) was dissolved in benzene (1 mL), added with aluminum isopropoxide (40 mg, 0.1 eq, 0.20 mmol) and 2-nitrobenzaldehyde (390 mg, 1.3 eq, 2.6 mmol) and stirred at room temperature for 1 hour and 30 minutes. The reaction mixture was added with ethyl acetate and made acidic with addition of 2 N hydrochloric acid, and then the organic layer was separated. Subsequently, the organic layer was washed with saturated brine and dried over magnesium sulfate. The solvent was evaporated in vacuo, and the residue was purified by silica gel column chromatography (hexane:ethyl acetate=30:1) to obtain 250 mg (yield: 83%, E:Z=9:10) of the title compound as yellow oil.

Aufarbeitung

  1. customthe organic layer was separated
  2. washSubsequently, the organic layer was washed with saturated brine
  3. dry with materialdried over magnesium sulfate
  4. customThe solvent was evaporated in vacuo
  5. customthe residue was purified by silica gel column chromatography (hexane:ethyl acetate=30:1)

Quellen und Nachweise

ORD-Eintrag
ord-f294cf65b2724e3bae7285f6a1795abf
Quelldatensatz
uspto-grants-2004_03
Patentnummer
US06703527B2

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