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Citation: Zhou Chengdong, Xie Guolong, Lin Fuqin. IMPROVED METHOD OF SYNTHESIS OF COUMARIN[J]. Chinese Journal of Applied Chemistry, ;1992, 9(3): 79-82. shu

IMPROVED METHOD OF SYNTHESIS OF COUMARIN

1.
Department of Chemistry, Xiangtan University, Xiangtan 411105

Corresponding author: Zhou Chengdong,
Received Date: 23 July 1991
Available Online: 18 September 1991

The synthesis of coumarin has been improved with good yield by yarying the adding order of the starting materials and using polyethylene glycol as phase transfer catalyst. Optimum molar ratios were salicylaldehyde:acetic anhydride:potassium acetate=1:3.7:0.5 and salicylaldehyde:acetic anhydride:potassium fluoride=1:3.7:0.35.
- coumarin,
- polyethlene glycol,
- potassium fluoride,
- potassium acetate,
- phase transfer catalysis
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