1-[(4-fluorophenyl)methyl]pyrrolidine-2,5-dione

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: Freshly ground potassium carbonate, K2CO3 (31 g, 225 mmol) was added to dry acetone (200 ml) in a 3-necked flask equipped with drying tube, condenser, and mechanical stirrer. Succinimide (7.43 g, 75 mmol) and 4-fluorobenzylbromide (11.21 mL, 90 mmol) were added. The mixture was refluxed for 19 hours and filtered through Celite. Acetone was removed under vacuum, diluted with EtOAc, washed with saturated aqueous sodium bicarbonate and also with brine, dried (MgSO4), filtered and concentrated to give crude. Crude product was chromatographed (EtOAc/Hexane) on silica gel to give N-4-fluorobenzyl-succinimide 1 as white solid (13.22 g, 85%). 1H NMR (CDCl3) δ 7.4 (dd, 2H), 7.0 (t, 2H), 4.6 (s, 1H), 2.7 (s, 4 H). equipped with drying tube, condenser, and mechanical stirrer The mixture was refluxed for 19 hours filtered through Celite Acetone was removed under vacuum diluted with EtOAc washed with saturated aqueous sodium bicarbonate and also with brine dried (MgSO4) filtered concentrated to give crude Crude product was chromatographed (EtOAc/Hexane) on silica gel

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: Freshly ground potassium carbonate, K2CO3 (31 g, 225 mmol) was added to dry acetone (200 ml) in a 3-necked flask equipped with drying tube, condenser, and mechanical stirrer. Succinimide (7.43 g, 75 mmol) and 4-fluorobenzylbromide (11.21 mL, 90 mmol) were added. The mixture was refluxed for 19 hours and filtered through Celite. Acetone was removed under vacuum, diluted with EtOAc, washed with saturated aqueous sodium bicarbonate and also with brine, dried (MgSO4), filtered and concentrated to give crude. Crude product was chromatographed (EtOAc/Hexane) on silica gel to give N-4-fluorobenzyl-succinimide 1 as white solid (13.22 g, 85%). 1H NMR (CDCl3) δ 7.4 (dd, 2H), 7.0 (t, 2H), 4.6 (s, 1H), 2.7 (s, 4 H). equipped with drying tube, condenser, and mechanical stirrer The mixture was refluxed for 19 hours filtered through Celite Acetone was removed under vacuum diluted with EtOAc washed with saturated aqueous sodium bicarbonate and also with brine dried (MgSO4) filtered concentrated to give crude Crude product was chromatographed (EtOAc/Hexane) on silica gel