常州大学学报（自然科学版）2012，Vol.24Issue(1)：10-13,4.
2,4-二氯苯氧乙酸合成清洁技术研究
Development of a Clean Technique for the Synthesis of 2,4- Dichlorophenoxyacetic Acid
吴霞 1单玉华 1任海永 1鲁墨弘 1李明时1
作者信息
- 1. 常州大学江苏省精细石油化工重点实验室,江苏常州 213164
- 折叠
摘要
Abstract
2,4-Dichlorophenoxyacetic acid(2,4-D) was prepared by catalytic chlorination of phenoxyace-tic acid with chlorine. Catalysts investigation, solvents screening, and reaction conditions optimization were carried out to develop a high yield and environmental - friendly process for 2,4 - D production. The results show that: BiPW12O40 (BPW) is a good catalyst and 1,2 - dichloroethane is a suitable solvent for this reaction. Under the optimal reaction conditions (122. 5g phenoxyacetic acid, 0. 72g BPW, 180g 1,2 - dichloroethane, 40g · h-1, 50℃) , 91. 14% of 2,4 -D (white crystalline) can be obtained with a purity of 98. 37% (HPLC). The 2,4-D product was quantified by HPLC and confirmed by FT-IR and NMR.关键词
2,4-二氯苯氧乙酸/催化剂/氯代/苯氧乙酸/合成Key words
2,4 -dichlorophenoxyacetic acid/ catalysts/ chlorination/ phenoxyacetic acid/ synthesis分类
化学化工引用本文复制引用
吴霞,单玉华,任海永,鲁墨弘,李明时..2,4-二氯苯氧乙酸合成清洁技术研究[J].常州大学学报（自然科学版）,2012,24(1):10-13,4.
