反应详情

温度

120 °C

6-Methoxy-quinoline-2-carbonitrile (9.3 g, 0.050 mol) in 96 ml methanol was treated with 240 ml of 20% NaOH and the mixture was heated to 120° C. in a sealed tube overnight. After cooling to 0° C. a precipitate appeared. The mixture was filtered to get a sodium salt that was suspended in water. HCl 25% was added until pH 3-4 to get the acid as a precipitate that was filtered and dried under vacuum. The mother liquid of the first filtration was acidified with HCl 25% until pH 3-4 until a precipitate appeared. The precipitate was filtered and the solid was washed in water and dried under vacuum to yield 9.6 g (86%) of the title compound as light brown solid. MS (m/e)=204 (M+H)+.

1. temperatureAfter cooling to 0° C. a precipitate
2. filtrationThe mixture was filtered