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2,3-Dihydroxybutanedioic Acid → 4-Formylbenzyl 5,6,7,8-tetrahydro-5,5,8,8-tetramethyl-2-naphthyl ether

HRID 6511
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 6511
[H-].C([Al+]CC(C)C)C(C)C.[CH3:11][C:12]1([CH3:34])[CH2:21][CH2:20][C:19]([CH3:23])([CH3:22])[C:18]2[CH:17]=[C:16]([O:24][CH2:25][C:26]3[CH:31]=[CH:30][C:29]([C:32]#N)=[CH:28][CH:27]=3)[CH:15]=[CH:14][C:13]1=2.C(O)(=O)C(C(C(O)=O)O)[OH:37].S([O-])([O-])(=O)=O.[Na+].[Na+]>CCOCC>[CH3:11][C:12]1([CH3:34])[CH2:21][CH2:20][C:19]([CH3:23])([CH3:22])[C:18]2[CH:17]=[C:16]([O:24][CH2:25][C:26]3[CH:31]=[CH:30][C:29]([CH:32]=[O:37])=[CH:28][CH:27]=3)[CH:15]=[CH:14][C:13]1=2
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Komponenten

6

Edukt 4

HCID 8752,3-Dihydroxybutanedioic AcidHCID 24436Sodium SulfateHCID 148505774-Cyanobenzyl 5,6,7,8-tetrahydro-5,5,8,8-tetramethyl-2-naphthyl etherHCID 21225700Diisobutylaluminumhydride

Produkt 1

HCID 148505794-Formylbenzyl 5,6,7,8-tetrahydro-5,5,8,8-tetramethyl-2-naphthyl ether

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 3283Diethyl EtherLösungsmittel

Reaktionsbedingungen

Temperatur
25 °C

Versuchsvorschrift

15.5 ml (19.7 mmol) of diisobutylaluminum hydride solution (20% in hexane) were added dropwise under nitrogen to a solution of 3 g (9.4 mmol) of 4-cyanobenzyl 5,6,7,8-tetrahydro-5,5,8,8-tetramethyl-2-naphthyl ether in 40 ml of dry ether at 25° C. The mixture was stirred at 25° C. for 40 min and then 250 ml of saturated tartaric acid solution were added dropwise. Subsequently, a little sodium sulfate solution was added, and the phases were separated. The aqueous phase was extracted with ether, and the organic extract was washed with saturated tartaric acid solution and water, dried over Na2SO4 and concentrated. Recrystallization from reethanol resulted in 1.4 g of the title compound of melting point 102°-104° C.

Aufarbeitung

  1. customthe phases were separated
  2. extractionThe aqueous phase was extracted with ether
  3. extractionthe organic extract
  4. washwas washed with saturated tartaric acid solution and water
  5. dry with materialdried over Na2SO4
  6. concentrationconcentrated
  7. customRecrystallization from reethanol

Quellen und Nachweise

ORD-Eintrag
ord-29b56e7bfb744771ab87ed2781bf6d17
Quelldatensatz
uspto-grants-1993_09
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US05248823

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