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Citation: XIAO Ru-Ting, LI Nai-Xuan, DONG Qing-Jie, WU Zhi-Dong, GE Ming. Catalytic Synthesis of Coumarin by Modified Perkin Method[J]. Chinese Journal of Applied Chemistry, ;2000, 17(3): 288-291. shu

Catalytic Synthesis of Coumarin by Modified Perkin Method

1.
Department of Chemical Engineering, Tianjin Institute of Science and Technology, Tianjin 300191

Received Date: 29 December 1999
Available Online: 10 April 2000
Fund Project: 天津市教育委员会高等学校科研基金项目资助课题(96203B) (96203B)

The Perkin method for coumarin synthesis from salicylaldehyde and acetic anhydride has been improved by using calcium acetate as catalyst and polyethylene glycol as activator. The influences of the catalyst, activator, acetic anhydride and thermostatic reaction temperature and time on the yield of coumarin were studied. The yield of coumarin could be reached up to 86.6% with lower consumption of acetic anhydride in case the total molar ratio of acetic anhydride to salicylaldehyde=1.9:1 and the reaction was kept 0.5 h at 212~216℃ when the reaction was close to the end.
- coumarin,
- Perkin synthesis,
- polyethylene glycol,
- calcium acetate
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