Citation: Xiao Yang WANG, Yu Lu WANG, Jian Ping, Li Fang SUN, Zi Yi ZHANG. The Synthesis of Symmetrical Azobenzenes from Anilines by Phase Transfer Catalysis[J]. Chinese Chemical Letters, ;1999, 10(7): 533-536. shu

The Synthesis of Symmetrical Azobenzenes from Anilines by Phase Transfer Catalysis

1.
Department of Chemistry, National Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000;
2.
Department of Chemistry, Henan Normal University, Xinxiang 453002

Received Date: 26 October 1998

Fund Project: We are grateful for the financial support from the National Natural Science Foundation of China

Using galvinoxyl as catalyst, the phase transfer catalyzed method of oxidation of primary amines to symmetrical azobenzenes with a saturated solution of potassium ferricyanide in 2 mol/L aqueous potassium hydroxide and dichloromethane is described. The reaction has intimate relation with Hammett substituent constants. This report offers an efficient and rapid method to prepare azobenzenes and a possible mechanism is also suggested.
- Azobenzenes,
- anilines,
- galvinoxyl,
- phase transfer,
- radical reaction
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