反应详情

6(5H)-Phenanthridinone was prepared by the method described by Gauthier in U.S. Pat. No. 3,932,643. Briefly, to a well stirred solution of 9-fluorenone (15 g, 0.083 mol) in concentrated sulfuric acid (500 mL), sodium azide (8.1 g, 0.12 mol) was slowly added over a period of 3 hr at 0° C. The reaction mixture was stirred at room temperature for 2 hr, until nitrogen no longer evolved. The reaction mixture was then poured slowly over crushed ice, to produce a solid precipitate which was filtered and washed thoroughly with cold water to remove sulfuric acid. The solid was then dried under vacuum, to give pure 6(5H)-phenanthridinone (15 g, 93%).

1. custom6(5H)-Phenanthridinone was prepared by the method
2. additionwas slowly added over a period of 3 hr at 0° C
3. additionThe reaction mixture was then poured slowly
4. customover crushed ice
5. customto produce a solid precipitate which
6. filtrationwas filtered
7. washwashed thoroughly with cold water
8. customto remove sulfuric acid
9. customThe solid was then dried under vacuum