2011•Journal of Jilin Institute of Chemical TechnologyRequires access
Study on the synthesis of phenoxyacetic acid with the polyethylene glycol-600 by phase transfer catalyzed method
Zhang Tie-jun
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Abstract
The new craft of the synthesis of phenoxyacetic acid,which takes phenol,chloroacetic acid and sodium hydroxide water-soluble fluid as the raw material,polyethylene glycol-600 as the phase transfer catalyst and water/toluene as the reaction medium,is studied in this paper.The effects of the molar ratio of phenol and chloroacetic acid,catalyst dosage and reaction time on the yield were studied systematically.The experiment results showed that the optimal reaction conditions are as follows: the molar ratio of phenol to chloroacetic acid is 1:1.2,the quality percentage of catalyst amount in phenol and chloroacetic acid was 9.5%,and reflux reaction time is 2.5 h.The reaction condition was mild,the yield can reach 83.5%,and the content was about 90%.