反应详情

A solution of 0.30 g (1.0 mmol) of 4-methyl-2-oxo-6-(3-trifluoromethyl-phenyl)-1,2-dihydro-pyridine-3-carboxylic acid in 15 ml of MeOH was treated with 0.06 ml=0.01 g (0.1 mmol) of H2SO4 (98%) and the reaction mixture was heated up to reflux. After 4 hours, it was cooled down to RT, poured into crashed ice and extracted twice with CH2Cl2; the organic phases were washed with water, dried over magnesium sulfate, filtered and evaporated. The residue was purified by flash column chromatography (CH2Cl2/MeOH 1:0 to 9:1) to give 0.24 g (77%) of the title compound as off-white solid. MS: 312.0 (MH+).

1. temperaturethe reaction mixture was heated up
2. temperatureto reflux
3. additionpoured
4. extractionextracted twice with CH2Cl2
5. washthe organic phases were washed with water
6. dry with materialdried over magnesium sulfate
7. filtrationfiltered
8. customevaporated
9. customThe residue was purified by flash column chromatography (CH2Cl2/MeOH 1:0 to 9:1)