反应详情

The crude 3-chloro-4-[2-(dimethylamino)vinyl]benzonitrile obtained in this way is taken up in 500 ml of THF/water (1:1), and 77.6 g (362.9 mmol) of sodium periodate are added. The mixture is stirred at room temperature for 18 h, and then the precipitate which has separated out is removed by filtration. The filtrate is mixed with saturated sodium bicarbonate solution and extracted three times with ethyl acetate. The combined organic phases are dried with sodium sulfate, and the solvent is removed in a rotary evaporator. The crude product is purified by column chromatography (silica gel, mobile phase: cyclohexane/ethyl acetate 7:3). 3.0 g (15% of theory) of the title compound are obtained.

1. customthe precipitate which has separated out
2. customis removed by filtration
3. additionThe filtrate is mixed with saturated sodium bicarbonate solution
4. extractionextracted three times with ethyl acetate
5. dry with materialThe combined organic phases are dried with sodium sulfate
6. customthe solvent is removed in a rotary evaporator
7. customThe crude product is purified by column chromatography (silica gel, mobile phase: cyclohexane/ethyl acetate 7:3)