反应详情

Isobutyric acid 7-(2-chloro-4-methyl-thiazol-5-yl)-6-oxo-5,6-dihydro-pyrido[2,3-b]pyrazin-8-yl ester (Example 2.4) (0.10 g), methyl iodide (0.18 ml) and potassium carbonate (0.075 g) were heated in acetonitrile (4 ml) in a microwave to 100° C. for 10 minutes. The reaction mixture was allowed to cool to ambient temperature and then diluted with ethyl acetate and water. The phases were separated and the organic phase was washed with water, aqueous sodium hydrogen carbonate (saturated) and brine, dried over magnesium sulfate and concentrated to give Compound No. B2 of Table B (0.078 g).

1. customThe phases were separated
2. washthe organic phase was washed with water, aqueous sodium hydrogen carbonate (saturated) and brine
3. dry with materialdried over magnesium sulfate
4. concentrationconcentrated
5. customto give Compound No