Potassium Sodium Tartrate → 1,4-Butanediol, 2,2-diphenyl-

HRID 975111

Reaktionsgleichung

Reaktionsgleichung von HRID 975111
[C:1]1([C:7]2([C:13]3[CH:18]=[CH:17][CH:16]=[CH:15][CH:14]=3)[CH2:12][CH2:11][O:10][C:8]2=[O:9])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.[H-].[Al+3].[Li+].[H-].[H-].[H-].[C@H](O)(C([O-])=O)[C@@H](O)C([O-])=O.[Na+].[K+]>C1COCC1>[C:1]1([C:7]([C:13]2[CH:18]=[CH:17][CH:16]=[CH:15][CH:14]=2)([CH2:12][CH2:11][OH:10])[CH2:8][OH:9])[CH:2]=[CH:3][CH:4]=[CH:5][CH:6]=1

Komponenten

5

Edukt 3

HCID 9357Potassium Sodium TartrateHCID 70393Dihydro-3,3-diphenyl-2(3H)-furanoneHCID 21226445Aluminium lithium hydride

Produkt 1

HCID 112419701,4-Butanediol, 2,2-diphenyl-Ausbeute 98,3 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8028TetrahydrofuranLösungsmittel

Versuchsvorschrift

In anhydrous THF (80 ml) was dissolved α,α-diphenyl-γ-butyrolactone (7 g) followed by addition of lithium aluminum hydride (1 g) with ice-cooling, and the mixture was stirred under the same conditions for 3 hours. Then, under ice-cooling, a saturated aqueous solution of Rochelle salt was added dropwise to precipitate the aluminum and other inorganic matter. The supernatant was taken by decantation, dried and concentrated under reduced pressure. The residue was recrystallized from isopropyl ether to provide 2,2-diphenyl-1,4-butanediol (7 g).

Aufarbeitung

  1. temperaturecooling
  2. temperatureThen, under ice-cooling
  3. customto precipitate the aluminum and other inorganic matter
  4. customdried
  5. concentrationconcentrated under reduced pressure
  6. customThe residue was recrystallized from isopropyl ether

Quellen und Nachweise

ORD-Eintrag
ord-45049620f24a441a9c4d9dd562ca185b
Quelldatensatz
uspto-grants-1997_03
Patentnummer
US05607939

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