Hydrochloric Acid → 4-(3-Bromophenoxy)butanoic acid
Reaktionsgleichung
[Br:1][C:2]1[CH:3]=[C:4]([CH:14]=[CH:15][CH:16]=1)[O:5][CH2:6][CH2:7][CH2:8][C:9]([O:11]CC)=[O:10].O.Cl>C1COCC1>[Br:1][C:2]1[CH:3]=[C:4]([CH:14]=[CH:15][CH:16]=1)[O:5][CH2:6][CH2:7][CH2:8][C:9]([OH:11])=[O:10]Komponenten
5
Edukt 3
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Reaktionsbedingungen
- Temperatur
- 50 °C
Versuchsvorschrift
Ethyl 4-(3-bromophenoxy)butanoate 6 from Example 5 was taken up in 100 mL THF and 50 mL water and treated with lithium hydroxide LiOH (hydrate, 4.9 g). The whole was heated at 50° C. for 2 days. The mixture was cooled to room temperature and acidified to pH 1 with 2N HCl. The aqueous was extracted with ethylacetate. The combined organics were washed with brine and dried over sodium sulfate to give crude 4-(3-Bromophenoxy)butanoic acid 7 as a sticky solid. 1H NMR (DMSO-d6, 500 MHz) 7.24 (m, 1H), 7.13 (m, 1H), 7.11 (m, 1H), 6.95 (m, 1H), 3.99 (m, 2H), 2.37 (m, 2H), 1.94 (m, 2H).
Aufarbeitung
- temperatureThe mixture was cooled to room temperature
- extractionThe aqueous was extracted with ethylacetate
- washThe combined organics were washed with brine
- dry with materialdried over sodium sulfate
Quellen und Nachweise
- ORD-Eintrag
- ord-d4b8f52c69d344f081d6aa6e62aa2379
- Quelldatensatz
- uspto-grants-2016_04
- Patentnummer
- US09309265B2
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