反应详情

5.0 g (34.7 mmol) of 5-aminoisoquinoline, 5.1 ml (69.4 mmol) of acetone and 945 mg (6.94 mmol) of zinc chloride were dissolved in 100 ml of acetonitrile and treated at 0° C. with 6.9 g (69.4 mmol) of trimethylsilyl cyanide. The mixture was refluxed for 3 hours, the solvent was then evaporated off and the residue was taken up in 200 ml of sodium hydrogen carbonate and extracted three times with ethyl acetate. The combined organic phases were dried and the residue remaining after evaporation was purified by flash chromatography (SiO2, methylene chloride/methanol=95/5) to give 6.0 g (82%) of the desired product.

1. temperatureThe mixture was refluxed for 3 hours
2. customthe solvent was then evaporated off
3. extractionextracted three times with ethyl acetate
4. customThe combined organic phases were dried
5. customafter evaporation
6. customwas purified by flash chromatography (SiO2, methylene chloride/methanol=95/5)