An efficient and reusable ionic liquid catalyst for the synthesis of 14-aryl-14H-dibenzo[a,j]xanthenes under solvent-free conditions

被引:22
作者
Zhu, Anlian [1 ]
Bai, Shukun [1 ]
Jin, Wei [1 ]
Liu, Ruixia [1 ]
Li, Lingjun [1 ]
Zhao, Yang [1 ]
Wang, Jianji [1 ]
机构
[1] Henan Normal Univ, Sch Chem & Chem Engn, Minist Educ, Key Lab Green Chem Media & React,Collaborat Innov, Xinxiang 453007, Henan, Peoples R China
来源
RSC ADVANCES | 2014年 / 4卷 / 68期
基金
中国国家自然科学基金;
关键词
ONE-POT SYNTHESIS; XANTHENE DERIVATIVES; HETEROGENEOUS CATALYST; DYE DERIVATIVES; TEMPERATURE; 14-ALKYL; 14-ARYL;
D O I
10.1039/c4ra06521b
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
In this work, it was found that acidic protic ionic liquid N,N-dimethylaminoethanol hydrosulfate ([DMEA][HSO4]) was an efficient and reusable catalyst for the one-pot synthesis of 14-aryl-14H-dibenzo[a, j]xanthenes under solvent-free conditions. This ionic liquid is very cheap, air and water stable, and can be easily recovered and reused for at least six cycles. The catalytic system described here is a green protocol since in the one-pot synthesis of 14-aryl-14H-dibenzo[a, j] xanthenes, the yield of the target compounds is excellent, operation and work-up procedures are simple, and no volatile organic solvents have been used. It is suggested that the synergetic effect of the cation and the anion of this ionic liquid is the main reason for the high catalytic activity and high chemo-selectivity. Scale-up experiments also suggest that this catalytic system has potential in industrial application.
引用
收藏
页码:36031 / 36035
页数:5
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