Salicylaldehyde → 2-[[5-(Acetyloxy)pentyl]oxy]benzaldehyde

HRID 1647992

Reaktionsgleichung

Reaktionsgleichung von HRID 1647992
[CH:1](=[O:9])[C:2]1[C:3](=[CH:5][CH:6]=[CH:7][CH:8]=1)[OH:4].[C:10]([O:13][CH2:14][CH2:15][CH2:16][CH2:17][CH2:18]Br)(=[O:12])[CH3:11].C(=O)([O-])[O-].[K+].[K+]>C(#N)C>[C:10]([O:13][CH2:14][CH2:15][CH2:16][CH2:17][CH2:18][O:4][C:3]1[CH:5]=[CH:6][CH:7]=[CH:8][C:2]=1[CH:1]=[O:9])(=[O:12])[CH3:11]

Komponenten

5

Edukt 3

HCID 6998SalicylaldehydeHCID 11430Potassium CarbonateHCID 851405-Bromopentyl acetate

Produkt 1

HCID 199221122-[[5-(Acetyloxy)pentyl]oxy]benzaldehydeAusbeute 43,6 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6342AcetonitrileLösungsmittel

Versuchsvorschrift

A mixture of 12.2 g (0.1 mol) of salicylaldehyde, 23 g (0.11 mol) of 5-bromopentyl acetate, 44.2 g (0.3 mol) of anhydrous, granular potassium carbonate, and 700 mL of acetonitrile was stirred and refluxed for 20 hr. After being cooled, the resulting mixture was filtered with suction and the solids were washed well with ether. The filtrate and washes were combined and concentrated in vacuo giving a yellow oil which was purified by flash chromatography on silica gel, eluting with 4:1 hexane-ether. There was obtained 10.9 g (43.6%) of 2-[[5-(acetyloxy)pentyl]oxy]benzaldehyde as an oil.

Aufarbeitung

  1. temperaturerefluxed for 20 hr
  2. temperatureAfter being cooled
  3. filtrationthe resulting mixture was filtered with suction
  4. washthe solids were washed well with ether
  5. concentrationconcentrated in vacuo
  6. customgiving a yellow oil which
  7. customwas purified by flash chromatography on silica gel
  8. washeluting with 4:1 hexane-ether

Quellen und Nachweise

ORD-Eintrag
ord-5055ccce9f1445349466708d7a9cf2cd
Quelldatensatz
uspto-grants-1995_07
Patentnummer
US05434186

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