Sodium borohydride → 1-Bromo-trans-1-octen-3-ol

HRID 436095

Reaktionsgleichung

Reaktionsgleichung von HRID 436095
[BH4-].[Na+].[Br:3]/[CH:4]=[CH:5]/[C:6](=[O:12])[CH2:7][CH2:8][CH2:9][CH2:10][CH3:11].Cl/C=C/C(=O)CCCCC>C(O)C>[Br:3]/[CH:4]=[CH:5]/[CH:6]([OH:12])[CH2:7][CH2:8][CH2:9][CH2:10][CH3:11]

Komponenten

5

Edukt 3

HCID 4311764Sodium borohydrideHCID 110410031-Chloro-trans-1-octen-3-oneHCID 117903381-Bromo-trans-1-octen-3-one

Produkt 1

HCID 130462801-Bromo-trans-1-octen-3-ol

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 702EthanolLösungsmittel

Versuchsvorschrift

To an ice cooled mixture of 14.29 g. (0.378 mole) of sodium borohydride in 400 ml. of anhydrous ethanol is added the crude 1-bromo-trans-1-octen-3-one (Example 725), from 0.424 mole of 1-chloro-trans-1-octen-3-one) over 30 minutes. The mixture is stirred for 2 hours with ice cooling and is then partitioned between ice water and benzene. The organic phase is washed with water and saturated brine, dried (Na2SO4), and evaporated to an oil. Fractional distillation yields the title compound as a colorless oil, b.p. 66°-68° C. (0.025 torr).

Aufarbeitung

  1. additionmixture of 14.29 g
  2. customis then partitioned between ice water and benzene
  3. washThe organic phase is washed with water and saturated brine
  4. dry with materialdried (Na2SO4)
  5. customevaporated to an oil
  6. distillationFractional distillation

Quellen und Nachweise

ORD-Eintrag
ord-d830b352695445648c9953de14021ee6
Quelldatensatz
uspto-grants-1977_02
Patentnummer
US04007210

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