Ammonium Chloride → 9-Chloro-5-methoxycarbonylmethyl-6,7-dihydro-1H, 5H-pyrido[1,2,3-de]quinoxaline-2,3-dione

HRID 862567

Reaktionsgleichung

Br[C:2]1[CH:3]=[C:4]2[CH2:16][CH2:15][CH:14]([CH2:17][C:18]([O:20][CH3:21])=[O:19])[N:6]3[C:7](=[O:13])[C:8](=[O:12])[NH:9][C:10]([CH:11]=1)=[C:5]23.[Cl-:22].[NH4+]>CS(C)=O>[Cl:22][C:2]1[CH:3]=[C:4]2[CH2:16][CH2:15][CH:14]([CH2:17][C:18]([O:20][CH3:21])=[O:19])[N:6]3[C:7](=[O:13])[C:8](=[O:12])[NH:9][C:10]([CH:11]=1)=[C:5]23

Komponenten

Reaktionsbedingungen

Temperatur: 160 °C

Versuchsvorschrift

A mixture of 9-bromo-5-methoxycarbonylmethyl-6,7-dihydro-1H, 5H-pyrido[1,2,3-de]quinoxaline-2,3-dione (530 mg, 1.50 mmol) and cuprous chloride (1.0 g, 10.1 mmol) in dimethyl sulfoxide (5 mL) was heated at 160° C. for 4.5 h and poured into 1N aqueous ammonium chloride (200 mL). The mixture was extracted with a mixed solvent of THF and ethyl acetate (600 mL). The extract was washed with 1N aqueous ammonium chloride (200 mL×2) and brine (200 mL), dried over magnesium sulfate, and concentrated. The residue was recrystallized from ethanol to give 125 mg of the title compound (27%).

Aufarbeitung

extractionThe mixture was extracted with a mixed solvent of THF and ethyl acetate (600 mL)
washThe extract was washed with 1N aqueous ammonium chloride (200 mL×2) and brine (200 mL)
dry with materialdried over magnesium sulfate
concentrationconcentrated
customThe residue was recrystallized from ethanol

Quellen und Nachweise

ORD-Eintrag: ord-77e566f919354158952c06c100c18b5f
Quelldatensatz: uspto-grants-1998_02
DOI: 10.6084/m9.figshare.5104873.v1
Patentnummer: US05719152

Verknüpfte Notizen

Wird geladen…