Butyric anhydride → 8-Chloropropenyl-7-hydroxy-4-methylcoumarin

HRID 25481

Reaktionsgleichung

Reaktionsgleichung von HRID 25481
[Cl:1][C:2](C)=[CH:3][C:4]1[CH:13]=[C:12]2C(C(C)=CC(=O)[O:11]2)=CC=1.[C:17]([O:22][C:23](=[O:27])[CH2:24][CH2:25][CH3:26])(=O)[CH2:18][CH2:19][CH3:20]>>[Cl:1][CH2:2][CH:3]=[CH:4][C:13]1[C:12]([OH:11])=[CH:20][CH:19]=[C:18]2[C:17]=1[O:22][C:23](=[O:27])[CH:24]=[C:25]2[CH3:26]

Komponenten

3

Edukt 2

HCID 7798Butyric anhydrideHCID 91010456HCID 91010456, Verbindung

Produkt 1

HCID 879765738-Chloropropenyl-7-hydroxy-4-methylcoumarin

Reaktionsbedingungen

Temperatur
180 °C

Versuchsvorschrift

A solution of 7-(2-chloro propenyl)-4-methyl coumarin (120 g, 0.48 mol) in a mixture of p-disopropyl-benzene (1 L) and n-butyric anhydride 160 mL was heated to 180° C. for 24 hours. The organic layer was evaporated under reduced pressure and residue recrystallizated from ethanol to afford 75 g of the desired compound.

Aufarbeitung

  1. customThe organic layer was evaporated under reduced pressure and residue

Quellen und Nachweise

ORD-Eintrag
ord-ff47f270b5784b95a10573b4c08cefc4
Quelldatensatz
uspto-grants-2005_02
Patentnummer
US06858742B2

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