5-Bromo-2-(trimethylsilyl)pyridine → HCID 178501134, Verbindung
Reaktionsgleichung
Cl[C:2]([C@H:4]1[CH2:9][CH2:8][C@H:7]([C:10]([O:12][CH3:13])=[O:11])[CH2:6][CH2:5]1)=[O:3].[Br:14][C:15]1[CH:16]=[CH:17][C:18]([Si](C)(C)C)=[N:19][CH:20]=1>CCCCCC>[Br:14][C:15]1[CH:16]=[CH:17][C:18]([C:2]([C@H:4]2[CH2:9][CH2:8][C@H:7]([C:10]([O:12][CH3:13])=[O:11])[CH2:6][CH2:5]2)=[O:3])=[N:19][CH:20]=1Komponenten
4
Edukt 2
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Reaktionsbedingungen
- Temperatur
- 110 °C
Versuchsvorschrift
To a flask containing methyl trans-4-(chlorocarbonyl)cyclohexanecarboxylate (8.19 g, 40 mmol) was added 5-bromo-2-(trimethylsilyl)pyridine (8.4 g, 36.4 mmol). The resulting mixture was heated to 110° C. for 10 hours. The reaction was allowed to cool to 70° C., and hexane (30 mL) was added dropwise. The resulting mixture was stirred for 14 hours at room temperature, filtered, and the residue was washed with hexane (20 mL). The beige solid was dried under nitrogen to afford methyl trans-4-[(5-bromopyridin-2-yl)carbonyl]cyclohexanecarboxylate. MS ESI calcd for C14H17BrNO3 [M+H]+ 326 and 328. found 326 and 328. 1H NMR (600 MHz, CDCl3) δ 8.70 (d, J=1.8 Hz, 1H), 7.94 (dd, J=8.4, 2.3 Hz, 1H), 7.88 (d, J=8.3 Hz, 1H), 3.78 (tt, J=11.9, 3.4 Hz, 1H), 3.66 (s, 3H), 2.32 (tt, J=12.2, 3.6 Hz, 1H), 2.08 (dd, J=13.8, 3.5 Hz, 2H), 1.99 (dd, J=13.9, 3.1 Hz, 2H), 1.60 (m, 2H), 1.45 (m, 2H).