Tetrahydrofuran → 4-Cyano-5-methyl-4-phenylhexanol

HRID 433656Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 433656
[C:1]([C:3]([C:12]1[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=1)([CH:9]([CH3:11])[CH3:10])[CH2:4][CH2:5][C:6](O)=[O:7])#[N:2].O1CCCC1.C(=O)([O-])O.[Na+]>CO>[C:1]([C:3]([C:12]1[CH:13]=[CH:14][CH:15]=[CH:16][CH:17]=1)([CH:9]([CH3:10])[CH3:11])[CH2:4][CH2:5][CH2:6][OH:7])#[N:2]

Komponenten

5

Edukt 3

HCID 8028Tetrahydrofuran2×HCID 516892Sodium BicarbonateHCID 9837536HCID 9837536, Verbindung

Produkt 1

HCID 101306314-Cyano-5-methyl-4-phenylhexanol

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 887MethanolLösungsmittel

Reaktionsbedingungen

Temperatur
-25 °C

Versuchsvorschrift

A 4-cyano-5-methyl-4-phenylhexanoic acid (500 mg, 2.16 mmol)/tetrahydrofuran (3.84 ml) solution was slowly added dropwise into a 1M-borane tetrahydrofuran complex/tetrahydrofuran solution (2.70 ml, 2.70 mmol) cooled to −25° C., while keeping the bulk temperature at −15° C. or less. After the completion of the dropwise addition, the bulk temperature was elevated to room temperature. After the completion of the reaction, it was cooled again and methanol (0.33 ml) was added dropwise thereinto. Further, a saturated aqueous sodium hydrogen carbonate solution (200 ml) was added thereinto, followed by extracting with ethyl acetate. The organic layer was successively washed with water, brine and saturated aqueous sodium hydrogen carbonate, followed by drying over magnesium sulfate and evaporating the solvent. The residue was purified by 20 g of Cromatorex NH silica gel (ethyl acetate/hexane system), to give the title compound as a colorless highly viscous oil (426 mg, 1.96 mmol, yield: 90.8%).

Aufarbeitung

  1. customat −15° C. or less
  2. additionAfter the completion of the dropwise addition
  3. customwas elevated to room temperature
  4. customAfter the completion of the reaction, it
  5. temperaturewas cooled again
  6. extractionby extracting with ethyl acetate
  7. washThe organic layer was successively washed with water, brine and saturated aqueous sodium hydrogen carbonate
  8. dry with materialby drying over magnesium sulfate
  9. customevaporating the solvent
  10. customThe residue was purified by 20 g of Cromatorex NH silica gel (ethyl acetate/hexane system)

Quellen und Nachweise

ORD-Eintrag
ord-2858dfb4c93745b9801f66e24530fc65
Quelldatensatz
uspto-grants-2003_12
Patentnummer
US06667412B1

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