反应详情

A mixture of 3-(3-hydroxymethylphenyl)-5-iso-butyl-N-tert-butylthiophene-2-sulfonamide (246 mg, 0.644 mmol; see step (d)), CBr4 (534 mg, 1.61 mmol) and PPh3 (422 mg, 1.61 mmol) in DMF (5.0 mL) was stirred at room temperature overnight. Water (10 mL) was then added and the reaction mixture was extracted with ethyl acetate. The combined organic phase was washed with water, dried and concentrated in vacuo. The crude product was purified on column chromatography (Hex/EtOAc 9:1) to give the sub-title compound as a white solid in 95% yield (273 mg, 0.612 mmol).

1. extractionthe reaction mixture was extracted with ethyl acetate
2. washThe combined organic phase was washed with water
3. customdried
4. concentrationconcentrated in vacuo
5. customThe crude product was purified on column chromatography (Hex/EtOAc 9:1)