反应详情

A mixed solution of N-{5-[2-(4-bromophenyl)ethyl]-2,2-dimethyl-1,3-dioxan-5-yl}acetamide (1.07 g) of Reference Example 5, 5-formyl-2-thiopheneboronic acid (0.56 g), sodium hydrogen carbonate (1.51 g), palladium(II) acetate (33.7 mg) and 2-(di-t-butylphosphino)biphenyl (89.5 mg) in 1,2-dimethoxyethane (12 mL)-water (4 mL) was stirred at 65° C. for 9 hr under a nitrogen atmosphere. The reaction mixture was extracted with ethyl acetate. The extract was washed with saturated brine, and dried over anhydrous sodium sulfate. The solvent was evaporated under reduced pressure, and the residue was purified by silica gel column chromatography to give the title compound (0.25 g) as brown crystals.

1. extractionThe reaction mixture was extracted with ethyl acetate
2. washThe extract was washed with saturated brine
3. dry with materialdried over anhydrous sodium sulfate
4. customThe solvent was evaporated under reduced pressure
5. customthe residue was purified by silica gel column chromatography