1,4-二甲基蒽醌的合成研究  

Study on the Synthesis of 1,4-Dimethyl Anthraquinone

作　　者：黄红[1] 宋才生[1] 徐玲[1] 戴润英[1] 

机构地区：[1]江西师范大学化学化工学院,江西南昌330027

出　　处：《江西师范大学学报（自然科学版）》2008年第1期94-97,共4页Journal of Jiangxi Normal University(Natural Science Edition)

基　　金：国防科工委军品配套项目(JPPT-115-643);科技部科技型中小企业技术创新基金(06C26213601342)资助

摘　　要：以对二甲苯和邻苯二甲酸酐为原料,二氯乙烷及DMAC为溶剂,在无水AlCl3的存在下,酰基化反应合成2-(2′,5′-二甲基甲酰)苯甲酸,对催化剂、原料的摩尔比、溶剂及反应温度进行了优化选择.2-(2′,5′-二甲基甲酰)苯甲酸分别与多聚磷酸、浓硫酸、发烟硫酸等进行环化反应合成1,4-二甲基蒽醌.研究表明,以发烟硫酸作环化试剂,以二氯乙烷为反应介质,在60℃下,反应2.5 h左右,产率可达88.63%.产物用FT-IR,1H-NMR得到了确证.2-（2′, 5′-dimethylbenzoyl） benzoic acid was synthesized by Friedel-crafts acylation from phthalic anhydride and p- xylene in the presence of AlCl3 and DMAC. The catalyst, a raw material mole of ratio, the solvent and the reaction temperature has carried on the optimized choice. 2-（2′ ,5′-dimethylbenzoyl） benzoic acid separately carries on dehydration with gathers the phosphoric acid, the strong sulfuric acid, the fuming sulfuric acid and so on to synthesize 1, 4- dimethyl anthraquinones. The results show that the process using fuming sulfuric acid was better. The reaction medium was 1,2-dichoroethane, reaction temperature was 60 ℃, reaction time was 2.5 h, the yield was 88.63 %. The chemical structure was characterized by FT-IR and 1^H-NMR.

关 键 词：邻苯二甲酸酐 对二甲苯 环化反应 1 4-二甲基蒽醌 

分 类 号：O625.154[理学—有机化学]