中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
2-甲基-6-氨基-喹喔啉 | 6-Amino-2-methyl-chinoxalin | 4188-17-4 | C9H9N3 | 159.191 |
2-甲基-6-硝基喹噁啉 | 2-methyl-6-nitroquinoxaline | 2942-02-1 | C9H7N3O2 | 189.173 |
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.