反应详情

A stirred mixture of 4-bromo-2-nitroanisole (98.56 g) and iron powder (113.7 g) in ethanol (1.51) was heated to reflux and treated dropwise with hydrochloric acid (350 ml, 0.5N) over 1 hour. After refluxing for a further 3 hours the reaction mixture was cooled to room temperature then filtered through hyflosupercel. The filtrate was evaporated and the residue was treated with saturated sodium bicarbonate solution (21 ) then filtered. The solid was washed with water then recrystallised from cyclohexane to give the title compound (61.98 g) as a pale brown solid, m.p. 93-93° C.

1. temperaturewas heated
2. temperatureto reflux
3. temperatureAfter refluxing for a further 3 hours the reaction mixture
4. filtrationthen filtered through hyflosupercel
5. customThe filtrate was evaporated
6. additionthe residue was treated with saturated sodium bicarbonate solution (21 )
7. filtrationthen filtered
8. washThe solid was washed with water
9. customthen recrystallised from cyclohexane