反应详情

A solution of the compound obtained in Step 2 (65.7 mg, 0.26 mmol), 9-ethyl-9H-carbazole-3-carboxylic acid (62.1 mg, 0.26 mmol), HATU (128 mg, 0.34 mmol) and TEA (0.108 mL, 0.78 mmol) in DMF (1.25 mL) was stirred at room temperature for 16 hr. To the reaction solution was added water, and the mixture was extracted with ethyl acetate. The organic layer was washed with water and saturated brine, and dried, and the solvent was evaporated under reduced pressure. The obtained residue was purified by silica gel column chromatography (solvent gradient; 10 to 50% ethyl acetate/hexane) to give the title compound (81 mg, 0.170 mmol, 65.7%) as a white powder.

1. extractionthe mixture was extracted with ethyl acetate
2. washThe organic layer was washed with water and saturated brine
3. customdried
4. customthe solvent was evaporated under reduced pressure
5. customThe obtained residue was purified by silica gel column chromatography (solvent gradient; 10 to 50% ethyl acetate/hexane)