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Water → Ethyl 8-acetyl-12-hydroxy-12-methylheptadecanoate

HRID 839985
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 839985
[C:1]([CH:4]([CH2:16][CH2:17][CH:18]=[C:19]([CH3:25])[CH2:20][CH2:21][CH2:22][CH2:23][CH3:24])[CH2:5][CH2:6][CH2:7][CH2:8][CH2:9][CH2:10][C:11]([O:13][CH2:14][CH3:15])=[O:12])(=[O:3])[CH3:2].[BH4-].[Na+].[OH2:28]>O1CCCC1.[OH-].[Na+]>[C:1]([CH:4]([CH2:16][CH2:17][CH2:18][C:19]([OH:28])([CH3:25])[CH2:20][CH2:21][CH2:22][CH2:23][CH3:24])[CH2:5][CH2:6][CH2:7][CH2:8][CH2:9][CH2:10][C:11]([O:13][CH2:14][CH3:15])=[O:12])(=[O:3])[CH3:2]
KomponentenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion

Komponenten

6

Edukt 3

HCID 962WaterHCID 4311764Sodium borohydrideHCID 54103623HCID 54103623, Verbindung

Produkt 1

HCID 20322206Ethyl 8-acetyl-12-hydroxy-12-methylheptadecanoate

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 8028TetrahydrofuranLösungsmittel2×
HCID 14798
Sodium Hydroxide
Lösungsmittel
2×

Versuchsvorschrift

Mercuric acetate (3.8 g., 0.012 mole) is dissolved in water (12 ml.) and tetrahydrofuran (20 ml.) is added to give a suspension of a yellow solid. Then, ethyl 8-acetyl-12-methyl-11-heptadecenoate (4.2 g., 0.012 mole) in tetrahydrofuran (20 ml.) is added, and the mixture stirred at room temperature for 24 hours. After 6 hours, the yellow suspended solid has disappeared and a cloudy solution results. To the solution is added 3M sodium hydroxide solution (12 ml.), followed by 0.5M sodium borohydride solution in 3M sodium hydroxide (12 ml.). Liquids are decanted from the precipitated mercury. The organic layer is taken up in ether, washed with three portions of water and dried over sodium sulfate. Evaporation of the ether leaves 4.4 g. of ethyl 8-acetyl-12-hydroxy-12-methylheptadecanoate as a yellowish oil used in the next step without further purification; pmr (CDCl3)δ 0.88 (3H,t), 1.13 (3H,s, CH3COH), 1.25 (3H,t, CH3CH2OCO--), 2.12 (3H,s, CH3CO), 4.12 (2H,q).

Aufarbeitung

  1. customto give
  2. additiona suspension of a yellow solid
  3. waitAfter 6 hours
  4. customa cloudy solution results
  5. customLiquids are decanted from the precipitated mercury
  6. washwashed with three portions of water
  7. dry with materialdried over sodium sulfate
  8. customEvaporation of the ether
  9. customleaves 4.4 g
  10. customof ethyl 8-acetyl-12-hydroxy-12-methylheptadecanoate as a yellowish oil used in the next step without further purification

Quellen und Nachweise

ORD-Eintrag
ord-c7234d170149406f962acc0b329d33ad
Quelldatensatz
uspto-grants-1978_06
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US04097504

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