Reaktionsgleichung
[Cl:1][C:2]1[CH:11]=[C:6]([C:7]([O:9][CH3:10])=[O:8])[C:5]([OH:12])=[C:4]([C:13](=[O:16])[CH2:14][CH3:15])[CH:3]=1.[Na].[O:18]1[CH2:23][CH2:22][N:21]([CH:24](O)C)[CH2:20][CH2:19]1>>[Cl:1][C:2]1[CH:11]=[C:6]([C:7]([O:9][CH2:10][CH2:24][N:21]2[CH2:22][CH2:23][O:18][CH2:19][CH2:20]2)=[O:8])[C:5]([OH:12])=[C:4]([C:13](=[O:16])[CH2:14][CH3:15])[CH:3]=1Komponenten
4
Versuchsvorschrift
A 24.3 g (0.10 mole) quantity of methyl 5-chloro-3-propionylsalicylate was added to a solution of 0.5 g (0.022 mole) of sodium in 300 ml of morpholinoethanol. The mixture was maintained at room temperature for 24 hours and was heated at 2 hours at 90° C. The reaction mixture was subjected to distillation at reduced pressure to remove the excess unreacted morpholinoethanol and the methanol produced, and the residue was recrystallized from cyclohexane to obtain 38.0 g (88.8%) of crystals which melt at 144.0° to 146.3° C.
Aufarbeitung
- temperaturewas heated at 2 hours at 90° C
- distillationThe reaction mixture was subjected to distillation at reduced pressure
- customto remove the excess unreacted morpholinoethanol
- customthe methanol produced
- customthe residue was recrystallized from cyclohexane
Quellen und Nachweise
- ORD-Eintrag
- ord-f478ea3b97504371bf9d97b2daa64432
- Quelldatensatz
- uspto-grants-1987_01
- Patentnummer
- US04634768
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