1-Bromo-2-methylpropane → 4-carboxy-2-isobutyl-6-[4-(methylthio)phenyl)-2H-pyridazin-3-one

HRID 982787

Reaktionsgleichung

C[O:2][C:3]([C:5]1[C:6](=[O:19])[NH:7][N:8]=[C:9]([C:11]2[CH:16]=[CH:15][C:14]([S:17][CH3:18])=[CH:13][CH:12]=2)[CH:10]=1)=[O:4].C(=O)([O-])[O-].[K+].[K+].[CH2:26](Br)[CH:27]([CH3:29])[CH3:28].C(=O)([O-])O.[Na+]>CN(C)C=O>[C:3]([C:5]1[C:6](=[O:19])[N:7]([CH2:26][CH:27]([CH3:29])[CH3:28])[N:8]=[C:9]([C:11]2[CH:16]=[CH:15][C:14]([S:17][CH3:18])=[CH:13][CH:12]=2)[CH:10]=1)([OH:2])=[O:4]

Komponenten

Reaktionsbedingungen

Temperatur: 80 °C

Versuchsvorschrift

To a solution of 4-methoxycarbonyl-6-[4-(methylthio)-phenyl]-2H-pyridazin-3-one (8.00 g, 29.0 mmol) in N,N-dimethylformamide (80 mL) were added potassium carbonate (8.02 g, 58.0 mmol) and isobutyl bromide (4.76 g, 34.8 mmol), and the mixture was stirred at 80° C. for 2 hours. The temperature of the reaction mixture was allowed to drop back to room temperature, and a saturated aqueous solution of sodium hydrogencarbonate was added. The mixture was then extracted with ethyl acetate. The extract was washed with brine, and dried over anhydrous sodium sulfate. The solvent was distilled off. Following the procedure of the residue was reacted to yield the title compound as a yellow solid [yield: 65.1% (2 steps)].

Aufarbeitung

customto drop back to room temperature
extractionThe mixture was then extracted with ethyl acetate
washThe extract was washed with brine
dry with materialdried over anhydrous sodium sulfate
distillationThe solvent was distilled off
customwas reacted

Quellen und Nachweise

ORD-Eintrag: ord-68e83b782cca42b694f834baeaacea16
Quelldatensatz: uspto-grants-2005_03
DOI: 10.6084/m9.figshare.5104873.v1
Patentnummer: US06861428B2

Verknüpfte Notizen

Wird geladen…