反应详情

To a solution of 3-nitrophthalimide (1 g, 5.20 mmol) in dry DMF (35 ml), cooled in an ice bath, NaH (60% w/w dispersion in mineral oil, 0.250 g, 6.25 mmol) was added, followed after 15 minutes by t-butyl bromoacetate (0.845 ml, 5.73 mmol). After stirring for 1 hour at room temperature, the mixture was poured into water and the resulting precipitate was washed with water and with a little amount of Et2O; after drying, tert-butyl 2-(4-nitro-1,3-dioxoisoindolin-2-yl)acetate was obtained (1.44 g, 4.70 mmol, 90% yield, MS/ESI+ 328.9 [MNa]+).

1. washthe resulting precipitate was washed with water and with a little amount of Et2O
2. customafter drying