StartseiteMCPWorkbenchSkills
StartseiteWorkbenchBenachrichtigungenMein Bereich
llms.txt · MCP-AnleitungDatenschutz · Nutzungsbedingungen · Supportv1.8.0
  1. Startseite
  2. /Reaktion

Benzyl Bromide → 3-(Octadecyloxy)-5-(phenylmethoxy)benzoic acid methyl ester

HRID 488267
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 488267
[CH3:1][O:2][C:3](=[O:30])[C:4]1[CH:9]=[C:8]([O:10][CH2:11][CH2:12][CH2:13][CH2:14][CH2:15][CH2:16][CH2:17][CH2:18][CH2:19][CH2:20][CH2:21][CH2:22][CH2:23][CH2:24][CH2:25][CH2:26][CH2:27][CH3:28])[CH:7]=[C:6]([OH:29])[CH:5]=1.[CH2:31](Br)[C:32]1[CH:37]=[CH:36][CH:35]=[CH:34][CH:33]=1.C(=O)([O-])[O-].[K+].[K+]>CN(C=O)C>[CH3:1][O:2][C:3](=[O:30])[C:4]1[CH:5]=[C:6]([O:29][CH2:31][C:32]2[CH:37]=[CH:36][CH:35]=[CH:34][CH:33]=2)[CH:7]=[C:8]([O:10][CH2:11][CH2:12][CH2:13][CH2:14][CH2:15][CH2:16][CH2:17][CH2:18][CH2:19][CH2:20][CH2:21][CH2:22][CH2:23][CH2:24][CH2:25][CH2:26][CH2:27][CH3:28])[CH:9]=1
KomponentenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion

Komponenten

5

Edukt 3

HCID 7498Benzyl BromideHCID 11430Potassium CarbonateHCID 152334783-Hydroxy-5-(octadecyloxy)benzoic acid methyl ester

Produkt 1

HCID 540335133-(Octadecyloxy)-5-(phenylmethoxy)benzoic acid methyl esterAusbeute 89,3 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6228DimethylformamideLösungsmittel

Versuchsvorschrift

A mixture of 3.0 g (7.1 mmol) of 3-hydroxy-5-(octadecyloxy) benzoic acid methyl ester, 0.93 ml (7.85 mmol) of benzyl bromide and 2.0 g (14.5 mmol) of potassium carbonate in 50 ml of DMF was stirred at 85° for 50 hours. The solvent was removed at reduced pressure and the residue was extracted with methylene chloride. The extract was concentrated and recrystallized from methylene chloride-methanol to give 3.24 g (89% yield, mp 62°-64°) of 3-(octadecyloxy)-5-(phenylmethoxy)benzoic acid methyl ester. A solution of 3.24 g (6.3 mmol) of 3-(octadecyloxy)-5-(phenylmethoxy) benzoic acid methyl ester and 3 ml (18 mmol) of 6N NaOH in 100 ml of methanol and 25 ml of dioxane was stirred at reflux for 3.5 hours. The solvents were removed at reduced pressure and the residue was acidified and extracted with ethyl acetate. The dried extract was concentrated to a solid which was recrystallized from methylene chloride-hexane to give 2.77 g (88% yield, mp 101°-103°) of 3-(octadecyloxy)-5-(phenylmethoxy)benzoic acid.

Aufarbeitung

  1. customThe solvent was removed at reduced pressure
  2. extractionthe residue was extracted with methylene chloride
  3. concentrationThe extract was concentrated
  4. customrecrystallized from methylene chloride-methanol

Quellen und Nachweise

ORD-Eintrag
ord-56fc58b114df49209de6afe9dcbc0c4a
Quelldatensatz
uspto-grants-1994_03
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US05298652

Notizen zur Reaktion

Wird geladen…

Auf dieser SeiteKomponentenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion