反应详情

A mixture of 2-methyl-3-pyridinol (8.57 g, 79 mmol), cesium carbonate (51.2 g, 157 mmol) and copper (I) oxide (11.24 g, 79 mmol) in dimethyl sulfoxide (250 mL) was stirred for 5 minutes at room temperature. N-[(2S)-5-bromo-2,3-dihydro-1H-inden-2-yl]-2-propanesulfonamide (25 g, 79 mmol, Description 1) was added followed by N,N-dimethylglycine (8.10 g, 79 mmol). The reaction was heated at 130° C. overnight. The reaction was allowed to reach room temperature and diluted with ethyl acetate (500 ml) then filtered through celite washing with ethyl acetate. The organic phase was washed with water (2×500 ml), dried over Na2SO4 and concentrated in vacuo. This material was purified using Biotage 75 L eluting with cyclohexane/ethyl acetate 2/8 to give N-{(2S)-5-[(2-methyl-3-pyridinyl)oxy]-2,3-dihydro-1H-inden-2-yl}-2-propanesulfonamide (free base, 18.5 g).

1. temperatureThe reaction was heated at 130° C. overnight
2. customto reach room temperature
3. filtrationthen filtered
4. washthrough celite washing with ethyl acetate
5. washThe organic phase was washed with water (2×500 ml)
6. dry with materialdried over Na2SO4
7. concentrationconcentrated in vacuo
8. customThis material was purified
9. washeluting with cyclohexane/ethyl acetate 2/8