反应详情

Sodium hydride (60% dispersion in oil; 290 mg, 7.2 mmol) was added portionwise over 30 minutes to a solution of 4-nitro-N-methylaniline (1.0 g, 6.6 mmol) in DMF (30 ml) at 0° C. Epibromohydrin (0.62 ml, 7.2 mmol) was added dropwise to the solution at 0° C. and the mixture was left to stand overnight. Volatile material was removed by evaporation and the residue was dissolved in a solution of dimethylamine in methanol (5.6M, 132 mmol). The solution was left to stand for 12 hours and then concentrated. The residue was dissolved in DCM (200 ml) and the solution was washed with water (3×20 ml) and saturated sodium chloride (20 ml) and dried. Evaporation gave the product as an orange solid (1.44 g, 86%). MS (MH+): 254.

1. waitthe mixture was left
2. customVolatile material was removed by evaporation
3. waitThe solution was left
4. waitto stand for 12 hours
5. concentrationconcentrated
6. dissolutionThe residue was dissolved in DCM (200 ml)
7. washthe solution was washed with water (3×20 ml) and saturated sodium chloride (20 ml)
8. customdried
9. customEvaporation