反应详情

4-Nitrobenzeneethanol (10.25 g), 1,6-dibromohexane (27 ml) tetra-n-butylammonium bisulphate (1.7 g) and 12.5M aqueous sodium hydroxide (55 ml) were stirred together for 40 h. The mixture was diluted with water (250 ml), extracted with ER (3×350 ml) and the combined extracts were washed consecutively with water (250 ml) and brine (250 ml), dried and evaporated to give an oil (42.6 g). The oil was purified by FCC eluting with ER-CX (0:100→1:19) to give the title compound as a yellow oil (9.52 g). T.l.c. (ER-CX 1:19) Rf 0.11. The following compounds were similarly prepared:

1. extractionextracted with ER (3×350 ml)
2. washthe combined extracts were washed consecutively with water (250 ml) and brine (250 ml)
3. customdried
4. customevaporated