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題 名 | Phase Transfer Catalyzed Method to Prepare Symmetrical Azobenzenes from Anilines |
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作 者 | 王曉陽; 王玉爐; 王彩蘭; 李建平; 王紅; 張自義; | 書刊名 | Journal of the Chinese Chemical Society |
卷 期 | 46:6 1999.12[民88.12] |
頁 次 | 頁971-974 |
分類號 | 346.01 |
關鍵詞 | Symmetrical substituted azobenzenes; Substituted anilines; Phase transfer; Radicals and radical reactions; |
語 文 | 英文(English) |
英文摘要 | Using free radical 4-hydroxy-2,2,6,6-tetramethyl-1-piperidinyloxyl as catalyst, the phase transfer catalyzed method of oxidation of anilines to symmetrical azobenzenes with a saturated solution of potassium ferricyanide in 2N aqueous potassium hydroxide and dichioromethane is described for the first time. The reaction has an intimate relation with Hammett substituent constants. This report offers an efficient and rapid method to prepare azobenzenes, and a possible mechanism is also suggested. |
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