An Efficient and Green One-pot Synthesis of 12-Aryl-8,9,10,12-tetra hyd robenzo[a]xanthen-11 -one Deriva- tives Promoted by Sulfamic Acid in [BMIM]BF4 Ionic Liquid  

作　　者：Zang,Hongjun Zhang,Yong Cheng,Bowen Zhang,Weiwei Xu,Xianlin Ren,Yuanlin 

机构地区：[1]Department of Enviromental and Chemistry Engineering,Tianjin Polytechnic University,State Key Laboratory of Hollow Fiber Membrane Materials and Processes,300160 Tianjin,China

出　　处：《Chinese Journal of Chemistry》2012年第2期362-366,共5页中国化学（英文版）

基　　金：The work was supported by the Tianjin National Natural Science Foundation （Nos. 11JCZDJC21300 and 10JCZDJC22200） and NSFC （No. 51076174）.

摘　　要：An efficient and green procedure for the synthesis of novel 12-aryl-8,9,10,12-tetrahydrobenzo[a]xanthen- 11- one derivatives has been described through one-pot condensation of 2-naphthol, arylaldehyde and 5,5-dimethyl- cyclohexane-l,3-dione in the presence of sulfamic acid （NH2SO3H） in ionic liquid 1-n-butyl-3-methylimidazolium tetrafluoroborate （[BMIM]BF4）. These reactions proceed with good yields under short reaction time. Furthermore, the green catalytic system can be recycled specific times with no decreases in yields and reaction rates.An efficient and green procedure for the synthesis of novel 12-aryl-8,9,10,12-tetrahydrobenzo[a]xanthen- 11- one derivatives has been described through one-pot condensation of 2-naphthol, arylaldehyde and 5,5-dimethyl- cyclohexane-l,3-dione in the presence of sulfamic acid （NH2SO3H） in ionic liquid 1-n-butyl-3-methylimidazolium tetrafluoroborate （[BMIM]BF4）. These reactions proceed with good yields under short reaction time. Furthermore, the green catalytic system can be recycled specific times with no decreases in yields and reaction rates.

关 键 词：one-pot reaction XANTHENES ionic liquid sulfamic acid 

分 类 号：TQ457.29[化学工程—农药化工] O646.1[理学—物理化学]