反应详情

温度

70 °C

To a solution of N,N-dibenzyl-6-chloro-5-nitropyrimidin-4-amine (1) (7.0 g, 19.7 mmol) and TEA (5.5 mL, 40 mmol) in dioxane (100 mL) was added tert-butyl 3-aminophenylcarbamate (4.2 g, 20.0 mmol). The reaction mixture was heated to 70° C. for 6 hrs under N2. After the reaction was cooled down to room temperature, water (150 mL) was introduced. The layers were separated and the aqueous layer was extracted with EtOAc (50 mL×2). The combined organic layer was washed with water (150 mL×2) and brine (100 mL×1), dried over Na2SO4 and concentrated to dryness. tert-Butyl 3-(6-(dibenzylamino)-5-nitropyrimidin-4-ylamino)phenylcarbamate (2) (9.2 g, 88%) was obtained as a brown solid. LC-MS (ESI): m/z (M+1) 527.

1. temperatureAfter the reaction was cooled down to room temperature
2. customThe layers were separated
3. extractionthe aqueous layer was extracted with EtOAc (50 mL×2)
4. washThe combined organic layer was washed with water (150 mL×2) and brine (100 mL×1)
5. dry with materialdried over Na2SO4
6. concentrationconcentrated to dryness