HCID 57786168, Verbindung → HCID 57786038, Verbindung

HRID 1628916Notizen

Reaktionsgleichung

[Cl:1][C:2]1[CH:3]=[CH:4][C:5]([CH:25]=[O:26])=[C:6]2[C:10]=1[N:9]=[C:8]1[N:11]([C:15]3[C:20]([Br:21])=[CH:19][C:18]([O:22][CH3:23])=[CH:17][C:16]=3[Br:24])[CH2:12][CH2:13][CH2:14][N:7]21.[CH2:27]([Mg]Br)[CH3:28]>O1CCCC1.[Cl-].[NH4+]>[Cl:1][C:2]1[C:10]2[N:9]=[C:8]3[N:11]([C:15]4[C:16]([Br:24])=[CH:17][C:18]([O:22][CH3:23])=[CH:19][C:20]=4[Br:21])[CH2:12][CH2:13][CH2:14][N:7]3[C:6]=2[C:5]([CH:25]([OH:26])[CH2:27][CH3:28])=[CH:4][CH:3]=1

Komponenten

Reaktionsbedingungen

Temperatur: 0 °C

Versuchsvorschrift

To a solution of 9-chloro-1-(2,6-dibromo-4-methoxyphenyl)-1,2,3,4-tetrahydropyrimido[1,2-a]benzimidazole-6-carbaldehyde (80.0 mg, 0.160 mmol) in tetrahydrofuran (3.2 mL) was added dropwise ethylmagnesium bromide (3 M solution in diethyl ether, 0.107 mL, 0.321 mmol) at 0° C., and the mixture was stirred at 0° C. for 5 min. The reaction mixture was diluted with aqueous saturated ammonium chloride, and extracted with ethyl acetate. The combined organic layer was washed with brine, dried over anhydrous sodium sulfate, filtered and concentrated in vacuo. The residue was purified by flash column chromatography on silica gel eluting with a 10-50% ethyl acetate/n-hexane gradient mixture to give the title compound as a colorless solid (78.0 mg, 0.147 mmol, 92%).

Aufarbeitung

extractionextracted with ethyl acetate
washThe combined organic layer was washed with brine
dry with materialdried over anhydrous sodium sulfate
filtrationfiltered
concentrationconcentrated in vacuo
customThe residue was purified by flash column chromatography on silica gel eluting with a 10-50% ethyl acetate/n-hexane gradient mixture

Quellen und Nachweise

ORD-Eintrag: ord-1782aba9b84d45caab3f507166b85890
Quelldatensatz: uspto-grants-2014_07
DOI: 10.6084/m9.figshare.5104873.v1
Patentnummer: US08785460B2

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