IMPROVED METHOD OF SYNTHESIS OF COUMARIN

Chinese Journal of Applied Chemistry ›› 1992, Vol. 0 ›› Issue (3): 79-82.

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IMPROVED METHOD OF SYNTHESIS OF COUMARIN

Zhou Chengdong, Xie Guolong, Lin Fuqin

Department of Chemistry, Xiangtan University, Xiangtan 411105

Received:1991-07-23 Revised:1991-09-18 Published:1992-06-10 Online:1992-06-10

Abstract

Abstract: 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.

Key words: coumarin, polyethlene glycol, potassium fluoride, potassium acetate, phase transfer catalysis

Zhou Chengdong, Xie Guolong, Lin Fuqin. IMPROVED METHOD OF SYNTHESIS OF COUMARIN[J]. Chinese Journal of Applied Chemistry, 1992, 0(3): 79-82.

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IMPROVED METHOD OF SYNTHESIS OF COUMARIN

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