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Citation: LIANG Zheng-Yong, LI Bin-Dong, XU Zhen, LÜ Chun-Xu. A Polymer Imidazole Salt as Phase-transfer Catalyst in Synthesis of Fluorinated Aromatics via Microwave Irradiation[J]. Chinese Journal of Applied Chemistry, ;2007, 24(4): 406-410. shu

A Polymer Imidazole Salt as Phase-transfer Catalyst in Synthesis of Fluorinated Aromatics via Microwave Irradiation

1.
College of Chemical Engineering, Nanjing University of Science & Technology, Nanjing 210094

Corresponding author: LÜ Chun-Xu,
Received Date: 12 May 2006
Available Online: 12 August 2006
Fund Project: 江苏省科技发展项目(BE2004045) (BE2004045)

Polymer imidazole salt 1 is a new kind of polymer phase transfer catalyst,which has the advantages of convenience for preparation,good thermal stability,and high catalytic activity.Its decomposition temperature determined by TGA is about 350℃.Some fluorinitrobenzene derivatives were prepared via halex fluorination catalyzed by polymer imidazole salt from corresponding chloronitrobenzene derivatives under the irradiation of microwave.The yield of products was in a range of 72.1%~94.4%,and the reaction time can be shortened by more than 60% in comparison with conventional heating.More aprotic solvents can be used in halogen-exchange fluorination under the irradiation of microwave.In addition,"non-thermal effect" can be shown obviously when the reaction is carried out in medium polar aprotic solvents.
- microwave chemistry,
- polymer imidazole salt,
- halogen-exchange fluorination,
- fluoronitrobenzene,
- non-thermal effect
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