Thiophenol → HCID 66849112, Verbindung

HRID 1034593Notizen

Reaktionsgleichung

[C:1]1([SH:7])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.[H-].[Na+].[NH2:10][C:11]1[C:16](Br)=[N:15][C:14]([C:18]2[CH:23]=[CH:22][C:21]([O:24][CH3:25])=[CH:20][CH:19]=2)=[CH:13][N:12]=1>CN(C=O)C>[NH2:10][C:11]1[C:16]([S:7][C:1]2[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=2)=[N:15][C:14]([C:18]2[CH:23]=[CH:22][C:21]([O:24][CH3:25])=[CH:20][CH:19]=2)=[CH:13][N:12]=1

Komponenten

Reaktionsbedingungen

Temperatur: 7.5 °C

Versuchsvorschrift

To a cooled solution of thiophenol (0.08 mL, 0.7 mmol) in dry DMF (10 mL), sodium hydride (NaH) (0.025 g, 1.00 mmol) was added and the resulting mixture was stirred for 15 min at 5-10° C. After this time 2-amino-3-bromo-5-(4-methoxyphenyl)pyrazine 17a (0.20 g, 0.71 mmol) was added and the mixture refluxed for 6 h, cooled and extracted with EtOAc. The organic layer was washed with water, dried over Na2SO4, filtered and the solvent removed under reduced pressure to get a crude that was purified by flash chromatography using petroleum ether-EtOAc (65:45 v/v) as eluent, to obtain 0.15 g of the title compound 18a as an orange solid (mp 89-90° C., 70% yield). 1H-NMR (CDCl3): 3.81 (s, 3H), 4.90 (br s, 2H), 6.89 (d, J=8.7, 2H), 7.33-7.39 (m, 7.45-7.50 (m, 2H), 7.69 (d, J=8.7, 2H), 8.28 (s, 1H). MS (ESI): m/z 310 (M+H+).

Aufarbeitung

temperaturethe mixture refluxed for 6 h
temperaturecooled
extractionextracted with EtOAc
washThe organic layer was washed with water
dry with materialdried over Na2SO4
filtrationfiltered
customthe solvent removed under reduced pressure
customto get a crude that
customwas purified by flash chromatography

Quellen und Nachweise

ORD-Eintrag: ord-7b74cafae9034ef3bff415d84327c0b2
Quelldatensatz: uspto-grants-2013_10
DOI: 10.6084/m9.figshare.5104873.v1
Patentnummer: US08546147B2

Notizen zur Reaktion

Wird geladen…