Methyl iodide → HCID 18920212, compound

Reaction equation

[CH2:1]([O:3][C:4](=[O:13])[C:5]1[CH:10]=[CH:9][C:8]([F:11])=[CH:7][C:6]=1[OH:12])[CH3:2].[C:14](=O)([O-])[O-].[Cs+].[Cs+].CI>C(#N)C>[CH2:1]([O:3][C:4](=[O:13])[C:5]1[CH:10]=[CH:9][C:8]([F:11])=[CH:7][C:6]=1[O:12][CH3:14])[CH3:2]

Participants

Procedure

To a solution of compound 4 (19.9 g, 0.109 mol) in acetonitrile (200 mL) was added cesium carbonate (42.0 g, 0.129 mol). The resulting mixture was stirred at rt for 30 min. followed by addition of methyl iodide (13.5 mL, 0.218 mol). The resulting mixture was stirred at rt O/N and filtered through Celite. The solvent was removed under reduced pressure to give crude product 5 (20.0 g, 93%) and used in the next step without further purification. 1H NMR 400 MHz (CDCl3) δ: 7.81-7.78 (m, 1H), 6.60-6.58 (m, 2H), 4.38 (q, J=7.0 Hz, 2H), 3.82 (s, 3H), 1.39 (t, J=7.0 Hz, 3H); MS (ES) m/z: 199 (M+1)+.