反应详情

温度

100 °C

A mixture of 2-chloro-4-[1-(3-methylphenyl)-3-methyl-1H-pyrazol-5-yl]pyridine (Example 45; 0.5 g, 0.0018 mol) and ethanolamine (15 mL) was heated at 100° C. for 18 hours. The reaction mixture was cooled and treated with ethyl acetate and water. The organic layer was washed with brine, dried over magnesium sulfate and filtered. The filtrate was concentrated and the crude was purified by chromatography on silica gel (ethyl acetate) to give 0.44 g (80% yield) of product as a yellow oil: Anal. Calc'd. for C18H20N4O: C, 70.11; H, 6.54; N, 18.17. Found: C, 69.89; H, 6.65; N, 18.35.

1. temperatureThe reaction mixture was cooled
2. washThe organic layer was washed with brine
3. dry with materialdried over magnesium sulfate
4. filtrationfiltered
5. concentrationThe filtrate was concentrated
6. customthe crude was purified by chromatography on silica gel (ethyl acetate)