反应详情

In a tube was placed boronate ester 35 (131 mg, 500 μmol), and 3 (175 mg, 500 μmol), with sodium carbonate (114 mg, 1.08 mmol) and tetrakis(triphenylphosphine)palladium(0) (22 mg, 19 μmol). Water (0.9 g) and Ethylene glycol dimethyl ether (2.1 g) were added and the mixture was deoxygenated. The tube was sealed and heated to 110 C overnight, with magnetic stirring. The crude product was extracted with ethyl acetate and water. The organics were washed with brine, dried over sodium sulfate, filtered and concentrated to give crude product. The crude was purified via flash chromatography and eluted with a gradient from 1:1 ethyl acetate/hexane to 100% ethyl acetate to 4/4/1 ethyl acetate/hexane/7N ammonia in methanol to give 36 (98 mg, 48%).

1. customIn a tube was placed
2. customthe mixture was deoxygenated
3. customThe tube was sealed
4. temperatureheated to 110 C overnight, with magnetic stirring
5. extractionThe crude product was extracted with ethyl acetate and water
6. washThe organics were washed with brine
7. dry with materialdried over sodium sulfate
8. filtrationfiltered
9. concentrationconcentrated
10. customto give crude product
11. customThe crude was purified via flash chromatography
12. washeluted with a gradient from 1:1 ethyl acetate/hexane to 100% ethyl acetate to 4/4/1 ethyl acetate/hexane/7N ammonia in methanol