反应详情

2.76 g. of 4-chloropyrazolo[1,5-a]quinoxaline-3-carboxylic acid ethyl ester are heated with 0.71 g. of the sodium salt of methyl mercaptan in dimethylformamide. After cooling, the reaction mixture is poured into water. The product 4-(methylthio)pyrazolo[1,5-a]quinoxaline-3-carboxylic acid, ethyl ester is filtered under suction and crystallized from ethanol as white needles, m.p. 97°-98°.

1. temperatureAfter cooling
2. filtrationThe product 4-(methylthio)pyrazolo[1,5-a]quinoxaline-3-carboxylic acid, ethyl ester is filtered under suction
3. customcrystallized from ethanol as white needles, m.p. 97°-98°