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Citation: LUO Jun, CAI Chun, LÜ Chun-Xu, QU Wen-Chao. Microwave-promoted Halogen-exchange Reaction for Preparation of p-Fluoronitrobenzene: Application of A New Polymer Phase-transfer Catalyst[J]. Chinese Journal of Applied Chemistry, ;2003, 20(1): 47-50. shu

Microwave-promoted Halogen-exchange Reaction for Preparation of p-Fluoronitrobenzene: Application of A New Polymer Phase-transfer Catalyst

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

Corresponding author: LUO Jun,
Received Date: 17 April 2002
Available Online: 15 October 2002

Polydiallyldimethylammonium chloride(PDMDAAC), annular and stable to heat and base, could act as a more effective phase-transfer catalyst than cetyltrimethylammonium bromide or polymer-grafted quaternary phosphonium or pyridinium salts in halogen exchange reaction. In the presence of this water-soluble polymer, with an average molecular weight of some 2×10⁵ g/mol, p-fluoronitrobenzene was prepared from p-chloronitrobenzene in yield of 92.5%. Microwave irradiation accelerated the reaction for about 3 times in comparison with common heating process probably due to the "non-thermal effect" of microwave to chemical reaction.
- polydiallyldimethyl ammonium chloride,
- fluorination,
- halogen-exchange reaction,
- microwave-promoted,
- fluoronitrobenzene
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