反应详情

To a solution of 5-cyano-3-methylpyridine-2-carboxylic acid (2 g, 12.4 mmol) in methanol (20 mL) was added thionyl chloride dropwise under reflux. The mixture was then heated at reflux with stirring. After 60 min, HPLC analysis revealed completion of reaction. To the reaction mixture was added toluene and the mixture was concentrated in vacuo to give the title compound as a pale yellow solid: ESIMS: 177; [(M+H)+]; 1H NMR (400 MHz, DMSO-d6): δ 8.92 (s, 1H), 8.39 (s, 1H), 3.90 (s, 3H), 2.46 (s, 3H).

1. temperatureunder reflux
2. temperatureThe mixture was then heated
3. temperatureat reflux
4. customcompletion of reaction
5. concentrationthe mixture was concentrated in vacuo