Reactive intermediates. Part XI. The generation and some reactions of benzynequinone
作者:C. W. Rees、D. E. West
DOI:10.1039/j39700000583
日期:——
5-dimethoxybenzamide. Demethylation of the former with boron tribromide, followed by oxidation with silver oxide gives 1-aminobenzotriazole-4,7-quinone which, on treatment with lead tetra-acetate yields benzynequinone, isolated as 5,6,7,8-tetraphenyl-1,4-naphthoquinone from a reaction with tetracyclone. 1-Amino-5,6-dimethoxybenzotriazole is synthesised in four steps from 4-amino-5-nitroveratrole, but attempts
1-氨基4,7-二甲氧基苯并三唑是由2,5-二甲氧基苯甲酰胺分六步制备的。前者用三溴化硼脱甲基,然后用氧化银氧化,得到1-氨基苯并三唑-4,7-醌,经四乙酸铅处理后得到苯炔醌,分离为5,6,7,8-四苯基-1,由4-萘醌与四环酮反应制得。1-氨基-5,6-二甲氧基苯并三唑是由4-氨基-5-硝基维四步合成的,但迄今为止,尝试通过脱甲基从中分离出1-氨基-5,6-二羟基苯并三唑均未成功。