中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
7-硝基-2-苯基喹喔啉 | 7-nitro-2-phenylquinoxaline | 103977-08-8 | C14H9N3O2 | 251.244 |
6-氨基喹喔啉 | 6-aminoquinoxaline | 6298-37-9 | C8H7N3 | 145.164 |
We report the preparation of novel 1,4,8-triazaphenanthrenes and show that the target compounds are efficiently obtained from the corresponding 6-aminoquinoxalines after N-propargylation followed by copper-catalyzed 6-endo-dig cycloisomerization and aromatization. The cyclization was found to be completely regioselective.