反应详情

温度

100 °C

20.0 g (111.4 mmol) of ethyl 2-hydroxy-6-methylisonicotinate (20a) were suspended in 330 ml of toluene. After addition of 36.54 g (132.5 mmol) of Ag2CO3 and 23.5 g (165.6 mmol) of methyl iodide, the mixture was heated to 100° C. with KPG stirring. After 4 hours, the reaction mixture was allowed to cool to RT and it was filtered through Celite. The filtrate was washed twice with water, dried with Na2SO4 and concentrated, 16.9 g of the title compound being isolated as a yellowish oil.

1. temperatureto cool to RT
2. filtrationit was filtered through Celite
3. washThe filtrate was washed twice with water
4. dry with materialdried with Na2SO4
5. concentrationconcentrated