2-溴-6-丙烷-2-苯胺

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To o-isopropylaniline in 4 l. benzene (0.74 mol, 100 g) was added 131.7 g (0.74 mol) NBS all at once. There was an exotherm to 35° C. Material was stirred two hours, then let stand overnight. The volume was reduced by three-quarters, and solid removed by filtration. Benzene was then removed from the filtrate, pentane added with ice, followed by 40 ml acetic anhydride. After ca. 15 minutes, solid was filtered off, pentane solution separated from filtrate, washed with ammonia water. After evaporation of pentane, oil was distilled 83° C. (0.25 mm) to give 64.5 g of 2-bromo-6-isopropylaniline. to 35° C let stand overnight removed by filtration Benzene was then removed from the filtrate, pentane added with ice After ca. 15 minutes solid was filtered off pentane solution separated from filtrate washed with ammonia water After evaporation of pentane, oil was distilled 83° C. (0.25 mm)