Reaktion #931706

Reaktionsgleichung

hydrochloric acid

ethyl 1-benzyl-4-hydroxy-1,2-dihydro-2-oxoquinoline-3-carboxylate

dihexylamine

→

N,N-dihexyl-1-benzyl-4-hydroxy-1,2-dihydro-2-oxoquinoline-3-carboxamide

Lösungsmittel

chloroform

Reaktionsbedingungen

Aufarbeitung

1. 1
   TemperaturAfter cooling to room temperature, to the reaction solution
2. 2
   Waschenthe separated organic phase was washed with 1 N hydrochloric acid and water
3. 3
   TrocknenThe organic phase was dried over anhydrous magnesium sulfate
4. 4
   SonstigeAfter removal of the drying agent
5. 5
   Filtrationby filtration
6. 6
   Einengenthe filtrate was concentrated under reduced pressure
7. 7
   SonstigeThe residue was purified by chromatography ((silica gel; Merk silica gel 230-4000 mesh (Merk Co.), developing solvent; chloroform)
8. 8
   Sonstigeto stand for crystallization

Vorschrift

A mixture of 0.30 g of ethyl 1-benzyl-4-hydroxy-1,2-dihydro-2-oxoquinoline-3-carboxylate and 2 ml of dihexylamine was stirred under heating at 130° C. for 2 hours. After cooling to room temperature, to the reaction solution were added chloroform and 1 N hydrochloric acid, and the separated organic phase was washed with 1 N hydrochloric acid and water. The organic phase was dried over anhydrous magnesium sulfate. After removal of the drying agent by filtration, the filtrate was concentrated under reduced pressure. The residue was purified by chromatography ((silica gel; Merk silica gel 230-4000 mesh (Merk Co.), developing solvent; chloroform) and allowed to stand for crystallization to give 0.36 g of N,N-dihexyl-1-benzyl-4-hydroxy-1,2-dihydro-2-oxoquinoline-3-carboxamide.

Quelle