Improved One-pot Synthesis of 4,6-Dihydroxyisophthalic Acid and 2,3-Dihydroxyterephthalic Acid

查看全文 作　　者：Guang Dong [1,2]LEI;Li Xin [1]LI;Zhi Yun [1]LU;Ming Gui [1]XIE

机构地区：[1]College of Chemistry, Sichuan Universtiy, Chengdu 610064;[2]Department of Chemistry and Life Science, Neijiang Normal College, Neijiang 641112

出　　处：《Chinese Chemical Letters》索引2005年第16卷第8期,共4页

基　　金：We want to express our thanks to the National Natural Science Foundation of China for financial support.(Grant No.20102004) 摘　　要：An improved method for the large-scale preparation of 4,6-dihydroxyisophthalic acid and 2,3-dihydroxyterephthalic acid has been developed. Compared to the previous procedures, this new process requires much lower CO2 pressure of 0.3 Mpa and shorter reaction time, thus providing a convenient access for large-scale synthesis. The yield is high (93% and 65%, respectively), and the oxidation of phenol is nearly inhibited, neither decolorization nor further chromatographic purification is required. 关键词：4,6-羟酸 2,3-羟酸层离法净化工艺合成方法

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Improved One-pot Synthesis of 4,6-Dihydroxyisophthalic Acid and 2,3-Dihydroxyterephthalic Acid

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