反应详情

温度

-5 °C

A solution of 3.47 g (17.57 mmol) of 2,4-dichloro-5-choromethyl-pyrimidine and 2.9 ml (21.08 mmol) triethylamine in 29 ml of THF is cooled to −5° C. and 2.2 ml (17.57 mmol) 2,2-dimethyl-propylamin is added over a period of 15 minutes. The reaction mixture is stirred at −5° C. for additional 2 h, then diluted with ethyl acetate and extracted once with brine. The organic layer is separated and dried over Na2SO4. Purification of the crude product by flash chromatography (hexanes/ethyl acetate) yields (2-chloro-5-chloromethyl-pyrimidin-4-yl)-(2,2-dimethyl-propyl)-amine as white crystalls.

1. extractionextracted once with brine
2. customThe organic layer is separated
3. dry with materialdried over Na2SO4
4. customPurification of the crude product by flash chromatography (hexanes/ethyl acetate)