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Citation: LI San-Hua, LIU Pu, WANG Lan. Reaction between Iodobenzene and Acrylic Acid Catalyzed by Chitosan Schiff-base Coordinated Palladium Catalyst to Prepare Cinnamic Acid[J]. Chinese Journal of Applied Chemistry, ;2005, 22(5): 494-497. shu

Reaction between Iodobenzene and Acrylic Acid Catalyzed by Chitosan Schiff-base Coordinated Palladium Catalyst to Prepare Cinnamic Acid

1.
Department of Chemistry, Zhengzhou University, Zhengzhou 450052

Corresponding author: LIU Pu,
Received Date: 14 August 2004
Available Online: 23 November 2004
Fund Project: 河南省自然科学基金资助项目(0111030900) (0111030900)

Chitosan schiff-base was synthesized via the reaction of chitosan with salicylaldehyde,which reacted with a palladium salt to obtain a chitosan schiff-base coordinated palladium catalyst.Using the reaction between iodobenzene and acrylic acid as a model,we studied the activity of this catalyst.The effects of different reaction conditions (reaction temperature,molar ratio of iodobenzene to acrylic acid,catalyst loading,kind and quantity of base and solvent) on the yield were investigated.The best conditions for the reaction were established as PhI 10 mmol;n(PhI):n(AA)=1:1.5;Et₃N 27 mmol;catalyst (mass fraction 2%) 0.1 g;solvent DMF 6 mL;70℃ for 7 h.Under the above best conditions,the yield was 90.7%.The catalyst was separated from the reaction mixture via filtration washed with solvent,and then reused.After 6 cycles no significant loss of catalyst activity was observed.
- Chitosan,
- chitosan schiff-base coordinated palladium catalyst,
- Cinnamic acid
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