HCID 58072196, Verbindung → HCID 58072182, Verbindung

HRID 1895128Notizen

Reaktionsgleichung

CON(C)[C:4]([C:6]1[C:11](=[O:12])[CH:10]=[CH:9][N:8]([C:13]2[CH:18]=[CH:17][CH:16]=[C:15]([C:19]([F:22])([F:21])[F:20])[CH:14]=2)[N:7]=1)=[O:5].[CH3:24][CH2:25][Mg+].[Br-]>C1COCC1>[C:4]([C:6]1[C:11](=[O:12])[CH:10]=[CH:9][N:8]([C:13]2[CH:18]=[CH:17][CH:16]=[C:15]([C:19]([F:20])([F:21])[F:22])[CH:14]=2)[N:7]=1)(=[O:5])[CH2:24][CH3:25]

Komponenten

Reaktionsbedingungen

Temperatur: -78 °C

Versuchsvorschrift

To a solution of N-methoxy-N-methyl-4-oxo-[3-(trifluoromethyl)phenyl]-1,4-dihydropyridazine-3-carboxamide (1.20 g, 3.52 mmol) in THF (20 mL) was added EtMgBr (1.0 M in THF, 7.04 mL, 7.04 mmol) at −78° C. under N2. The mixture was stirred at −78° C. for 1 h. The reaction was quenched with saturated NH4Cl aqueous solution at −78° C. The mixture was warmed to room temperature, extracted with EtOAc, dried over Na2SO4, filtered, concentrated in vacuo and purified by column chromatography on silica gel (hexane/EtOAc=50/50 to 0/100) to yield the title compound (767 mg, 74% yield) as a pale yellow solid: 1H NMR (DMSO-d6, 300 MHz): δ ppm 1.06 (3H, t, J=7.2 Hz), 2.99 (2H, q, J=7.2 Hz), 6.73 (1H, d, J=8.3 Hz), 7.79-7.88 (2H, m), 8.06-8.17 (2H, m), 8.97 (1H, d, J=8.3 Hz).

Aufarbeitung

customThe reaction was quenched with saturated NH4Cl aqueous solution at −78° C
temperatureThe mixture was warmed to room temperature
extractionextracted with EtOAc
dry with materialdried over Na2SO4
filtrationfiltered
concentrationconcentrated in vacuo
custompurified by column chromatography on silica gel (hexane/EtOAc=50/50 to 0/100)

Quellen und Nachweise

ORD-Eintrag: ord-6a1347f3eb254f19bb6da123beca98e4
Quelldatensatz: uspto-grants-2013_08
DOI: 10.6084/m9.figshare.5104873.v1
Patentnummer: US08513251B2

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