反应详情

温度

5 °C

The product of step (a) (2.5 g) was dissolved in acetic acid (150 ml) and the solution cooled to 5° C. A solution of sodium nitrite (625 mg) in water (50 ml) was added dropwise resulting in a dark blue colouration. The reaction was stirred at room temperature for 30 minutes during which time a pink solid precipitated from solution. This was isolated by filtration and washed with water, then dried at 50° C. to give the sub-titled product as a blue solid (4.14 g).

1. customresulting in a dark blue colouration
2. customprecipitated from solution
3. customThis was isolated by filtration
4. washwashed with water
5. customdried at 50° C.