反应详情

温度

80 °C

To a solution of 5-nitro-1H-indole-2-carboxylic acid (6.95 g, 33.7 mmol) in N,N-dimethylformamide (DMF)/pyridine (1/1, 150 ml) N,N′-carbonyl-diimidazole (5.47 g, 33.71 mmol) was added. The mixture was stirred at 80° C. for 1 h. At 0° C. propylamine (9.96 g, 168.56 mmol) was added. The mixture was stirred at 0° C. for 1 h and then at room temperature for 16 h. The solution was diluted with water (2 I). After addition of sodium chloride the product precipitated. After filtration the residue was washed with water and pentane, and dried in a vacuum oven at 50° C. to give the product as a yellow powder.

1. stirringThe mixture was stirred at 0° C. for 1 h
2. waitat room temperature for 16 h
3. customprecipitated
4. filtrationAfter filtration the residue
5. washwas washed with water and pentane
6. customdried in a vacuum oven at 50° C.