反应详情

温度

70 °C

Under an atmosphere of argon, 2.50 g (19.6 mmol) of 2-methyl-5-chloropyridine and 4.38 g (23.5 mmol) of N-(tert-butyloxycarbonyl)piperazine are dissolved in 50 ml of absolute toluene. 2.26 g (23.5 mmol) of sodium tert-butoxide, 0.37 g (0.59 mmol) of BINAP and 0.36 g (0.39 mmol) of tris(dibenzylideneacetone)dipalladium are then added, and the mixture is heated at 70° C. for 12 h. After cooling, diethyl ether is added to the reaction mixture, the mixture is washed three times with saturated sodium chloride solution and dried over sodium sulphate and the solvent is removed under reduced pressure. The residue is purified by flash chromatography (cyclohexane/ethyl acetate 9:1).

1. temperatureAfter cooling
2. washthe mixture is washed three times with saturated sodium chloride solution
3. dry with materialdried over sodium sulphate
4. customthe solvent is removed under reduced pressure
5. customThe residue is purified by flash chromatography (cyclohexane/ethyl acetate 9:1)