反应详情

A solution of the product of Example 5 Step 5 (0.22 g, 1 mmol), 5-(4,4,5,5-tetramethyl-[1,3,2]-dioxaborolan-2-yl)indanone (0.25 g, 1 mmol) (WO98/45265) and potassium acetate (294 mg, 3 mmol) in dimethylformamide (2 ml), ethanol (2 ml) and water (2 ml) was treated with palladium (II) acetate (12 mg, 0.05 mmol) and triphenylphosphine (26.2 mg, 0.1 mmol) and heated under reflux for 5 hours. The reaction mixture was cooled to room temperature filtered through celite and concentrated in vacuo. The residue was diluted with ethyl acetate, washed with water and saturated brine, dried (MgSO4) and concentrated in vacuo. The residue was chromatographed on silica gel eluting with hexane/ethyl acetate (1:1) and methanol/ethyl acetate (1:9) to afford the title compound (0.17 g, 62%); MS(ES+) m/e 276 [M+H]+.

1. temperatureheated
2. temperatureunder reflux for 5 hours
3. filtrationfiltered through celite and
4. concentrationconcentrated in vacuo
5. additionThe residue was diluted with ethyl acetate
6. washwashed with water and saturated brine
7. dry with materialdried (MgSO4)
8. concentrationconcentrated in vacuo
9. customThe residue was chromatographed on silica gel eluting with hexane/ethyl acetate (1:1) and methanol/ethyl acetate (1:9)