反应详情

Biphenyl-4-sulfonic acid-(4-hydroxybutyl)-penten-1-yl-amide (1 g) was dissolved in 0.5 M NaBH4 in diglyme (9 mL) and chilled in an ice bath. BF3. OEt2 (1 mL) in diglyme (4 mL) was added with vigorous stirring. Stirring was continued for 1 hour and water (1 mL) was added. 3M NaOH (2 mL) was added followed by 30% H2O2 (3 mL). Anhydrous K2CO3 (5 g) was added and the solvent decanted. The K2CO3 was washed with ethyl acetate and the combined organics dried (Na2SO4) and evaporated. Distillation under vacuum removed most of the remaining diglyme. The residue was purified by column chromatography (ethyl acetate/petrol) to give the title compound as a white powder. δC (DMSO, 62.9 MHz): 22.7, 25.2, 28.3, 29.6, 32.1, 48.0, 60.3, 60.5, 127.1, 127.2, 127.6, 128.6, 129.2, 138.1, 138.4 and 144.1.

1. temperaturechilled in an ice bath
2. customthe solvent decanted
3. washThe K2CO3 was washed with ethyl acetate
4. dry with materialthe combined organics dried (Na2SO4)
5. customevaporated
6. distillationDistillation under vacuum
7. customremoved most of the remaining diglyme
8. customThe residue was purified by column chromatography (ethyl acetate/petrol)