离子液体中NaHSO_4催化芳香醛与1,3-环己二酮的缩合反应  

Condensation of Aromatic Aldehydes with 1,3-Cyclohexanedione Catalyzed by NaHSO_4 in Ionic Liquids

作　　者：马晶军[1] 李敬慈[1] 唐然肖[1] 周欣[1] 吴秋华[1] 王春[1] 张明明[1] 李庆[1] 

机构地区：[1]河北农业大学理学院,保定071001

出　　处：《有机化学》2007年第5期640-642,共3页Chinese Journal of Organic Chemistry

基　　金：河北农业大学非生命学科和新兴学科科研发展基金资助项目.

摘　　要：以NaHSO4为催化剂,在离子液体1-丁基-3-甲基咪唑四氟硼酸盐([bmim]BF4)介质中,由芳香醛与1,3-环己二酮衍生物制备了9-芳基-2,3,4,5,6,7-六氢-2H-氧杂蒽-1,8-二酮衍生物.在沸水浴中反应1～2h,产率达81.2%～93.0%.该方法反应时间短,产率高,催化剂价廉易得,而且对环境友好.Abstract A series of 9-aryl-2,3,4,5,6,7-hexahydro-2H-xanthene-1,8-dione derivatives were synthesized from aromatic aldehydes and 1,3-cyclohexanedione derivatives catalyzed by NaHSO4 in ionic liquids, 1-n-butyl-3-methylimidazoliurn tetrafluoroborate （[bmim]BF4）. The reactions were carded out in boiling water bath for 1 -2 h, and the yield ranged from 1.2% to 93.0%. The catalyst employed is not expensive and the ionic liquid can be reusable. The proposed method is fast, efficient and environmentally friendly.

关 键 词：离子液体 9-芳基-2 3 4 5 6 7-六氢-2H-氧杂蒽-1 8-二酮 硫酸氢钠 

分 类 号：O643.32[理学—物理化学]