反应详情

温度

40 °C

To a solution of 5,6-difluoroindan-1-one (Preparation 76) (3.1 g, 18.4 mmol) in MeOH at 40° C. was added isoamylnitrite (3.22 mL, 23.9 mmol) followed by conc. HCl (1.8 mL). The reaction was stirred at 40° C. for 45 min, cooled to rt and poured into water (50 mL). The precipitate was collected by filtration and air-dried to give the title compound: δH(DMSO-d6) 3.77 (2H, s), 7.72-7.85 (2H, m), 12.79 (1H, s).

1. temperaturecooled to rt
2. filtrationThe precipitate was collected by filtration
3. customair-dried