Iodoethane → HCID 71062915, Verbindung

Reaktionsgleichung

[CH3:1][O:2][C:3]1[CH:4]=[C:5]2[C:10](=[CH:11][CH:12]=1)[C:9](=[O:13])[CH:8]([CH2:14][C:15]([O:17][CH2:18][CH3:19])=[O:16])[CH2:7][CH2:6]2.[H-].[Na+].[CH2:22](I)[CH3:23]>CN(C=O)C>[CH2:22]([C:8]1([CH2:14][C:15]([O:17][CH2:18][CH3:19])=[O:16])[CH2:7][CH2:6][C:5]2[C:10](=[CH:11][CH:12]=[C:3]([O:2][CH3:1])[CH:4]=2)[C:9]1=[O:13])[CH3:23]

Komponenten

Versuchsvorschrift

A solution of 1C (10 g, 38.16 mmol) in DMF (60 mL) was added over a period of 30 min to an ice cold solution of NaH (2.29 g, 95.41 mmol) in DMF (40 mL), and the mixture was stirred for 10 min. Ethyl iodide (17.86 g, 114.48 mmol) was then added, and the mixture was stirred for 2 h at room temperature. The reaction was then brought to 0° C., excess NaH was quenched with ice water and the mixture was extracted with ethyl acetate (2×100 mL). The combined organic layers were dried over sodium sulfate and filtered, and the filtrate was concentrated under vacuum to give the title compound (7.0 g, 64%) as a solid. 1H NMR (300 MHz, CDCl3): δ 8.03 (d, J=9.0 Hz, 1H), 6.82 (dd, J1=2.4 Hz, J2=8.7 Hz, 1H), 6.6 (d, J=2.1 Hz, 1H), 4.1 (q, J=7.2 Hz, 2H), 3.8 (s, 3H), 3.12-2.9 (m, 3H), 2.47 (d, J=15.9 Hz, 1H), 2.42 (m, 1H), 2.03 (dt, J1=13.5 Hz, J2=4.5 Hz, 1H), 1.8-1.6 (m, 2H), 1.21 (t, J=7.2 Hz, 3H), 0.9 (t, J=7.5 Hz, 3H). ESI-MS m/z=291 (M+H)+.