Methyl iodide → HCID 71062681, 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+].[CH3:22]I>CN(C=O)C>[CH3:1][O:2][C:3]1[CH:4]=[C:5]2[C:10](=[CH:11][CH:12]=1)[C:9](=[O:13])[C:8]([CH2:14][C:15]([O:17][CH2:18][CH3:19])=[O:16])([CH3:22])[CH2:7][CH2:6]2

Komponenten

Versuchsvorschrift

A solution of 1C (30 g, 114 mmol) in DMF (100 mL) was added over a period of 30 min to an ice cold solution of NaH (11.44 g, 286 mmol) in DMF (100 mL), and the mixture was stirred for 10 min. Methyl iodide (21.36 mL, 343 mmol) was then added, and the mixture was stirred for 6 h at room temperature. The reaction was then brought to 0° C., excess NaH was quenched with ice water, and the aqueous layer was extracted with ethyl acetate (2×200 mL). The combined organic layers were dried over sodium sulfate and filtered, and the filtrate was concentrated under vacuum to give the title compound (30 g, 81%) as a solid. 1H NMR (400 MHz, DMSO-d6): δ 7.96 (d, J=8.4 Hz, 2H), 6.72 (dd, J1=2.4 Hz, J2=8.4 Hz, 1H), 6.62 (s, 1H), 4.09 (q, J=7.2 Hz, 2H), 3.08-2.80 (m, 3H), 2.46 (d, J=15.6 Hz, 1H), 2.39 (dd, J1=4.4 Hz, J2=12.0 Hz, 1H), 1.90 (dt, J1=14 Hz, J2=4.4 Hz, 1H), 1.26 (s, 3H), 1.21 (t, J=7.2 Hz, 1H). ESI-MS m/z: 277 (M+H)+.