反应详情

The crude product from step (b) above (1.2 g, 3.83 mmol), 1-(4-bromobenzyl)-1H-imidazole (98.8 mg, 0.416 mmol, see Example 1(d) above), Pd(PPh3)4 (29 mg, 0.25 mmol), NaOH (3 mL, 1M, 3 mmol), toluene (15 mL) and ethanol (3 mL) were mixed under N2 (g). The mixture was heated to reflux for 2 h. The reaction mixture was then diluted with ethyl acetate (150 mL) and washed with water and brine. The organic phase was dried over MgSO4 and the solvent was removed in vacuo. Purification using column chromatography with CHCl3: MeOH (20:1) as eluent yielded the sub-title compound (93.7 mg, 0.220 mmol) in 53% yield.

1. temperatureThe mixture was heated
2. temperatureto reflux for 2 h
3. washwashed with water and brine
4. dry with materialThe organic phase was dried over MgSO4
5. customthe solvent was removed in vacuo
6. customPurification