Hydroquinone Carbozylation to 2,5-dihydrozyterephthalic Acid by Solvent Method and the Activity of PdCl2/C Catalyst

摘要：

1.Introduction 2,5-Dihydroxyterephthalic acid (2,5-DHTA) is an important intermediate in organic synthesis, which is widely used for the manufacture of organic optoelectronic materials, colorants, and fluorescent materials. 2,5-DHTA can react with glycols for the manufacture of linear polyester and copolyesters possessing fiber-or film-forming properties1-3. The synthesis of 2,5-DHTA can be carried out by a Kolbe-Schmitt reaction. The Kolbe-Schmitt reaction involves three steps, which are shown in Scheme 1.Potassium salt of hydroquinone is first prepared by reaction of hydroquinone with potassium hydroxide or potassium carbonate. The second step is the carboxylation of dipotassium salt of hydroquinone with CO2 under high pressure. Then 2,5-DHTA can be obtained by acidification with hydrochloric acid.

关键词： 2,5-Dihydrozyterephthalic acid Solvent method PdCl2/C catalyst Hydroquinone

作者: Lin Qi Hengbo Yin Yutang Shen Huihong Lu Tingshun Jiang Longbao Yu

作者单位: Faculty of Chemistry and Chemical Engineering,Jiangsu University,Zhenjiang 212013,China

会议类型: 国际会议

会议名称: 18th International Symposium on Fine Chemistry and Functional Polymers,4th IUPAC International Symposium on Novel Materials and Their Synthesis(第18届国际精细化学和功能高分子学术讨论会暨第四届IUPAC 国际新型材料及其制备学术讨论会)

会议地点: 江苏镇江

会议语种:英文

页码: 60-61

在线出版日期: 2008-10-15（万方平台首次上网日期，不代表论文的发表时间）