Hydroquinone → HCID 67908432, Verbindung

HRID 2286328Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 2286328
[OH:1][CH:2]1[O:6][C:5](=[O:7])[CH:4]=[CH:3]1.[C:8]1([CH:15]=[CH:14][C:12](O)=[CH:11]C=1)O.C1CC=CC=1>C(Cl)(Cl)Cl>[OH:7][CH:5]1[CH:4]2[C:3](=[C:11]3[CH2:12][CH:14]2[CH2:15][CH2:8]3)[C:2](=[O:1])[O:6]1

Komponenten

5

Edukt 3

HCID 785HydroquinoneHCID 7612CyclopentadieneHCID 210765-Hydroxyfuran-2(5H)-one

Produkt 1

HCID 67908432HCID 67908432, VerbindungAusbeute 61.756,5 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6212ChloroformLösungsmittel

Reaktionsbedingungen

Temperatur
20 °C

Versuchsvorschrift

A mixture of 30 g of 5-hydroxy-2(5H)-furanone, 150 ml of chloroform, 50 mg of hydroquinone and 35 ml of freshly distilled cyclopentadiene was stirred at 20° C. under an inert atmosphere and stirred for 17 hours at 20°-45° C. The mixture was evaporated to dryness under reduced pressure and the residue was crystallized from an isopropyl ether-petroleum ether mixture to obtain 46.6 g of 3-hydroxy-tetrahydro-4,7-methano-isobenzofuran-1-one melting point at ≃103° C.

Aufarbeitung

  1. stirringstirred for 17 hours at 20°-45° C
  2. customThe mixture was evaporated to dryness under reduced pressure
  3. customthe residue was crystallized from an isopropyl ether-petroleum ether mixture

Quellen und Nachweise

ORD-Eintrag
ord-2d35f876177f4bc4b6bccccd41cde5e5
Quelldatensatz
uspto-grants-1981_05
Patentnummer
US04265817

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