A Green and Efficient Synthesis of 9-Aryl-3,4,5,6,7,9-hexahydroxanthene-1,8-dione using a Task-Specific Ionic Liquid as Dual Catalyst and Solvent
Jingjun Ma A , Xin Zhou A , Xiaohuan Zang A , Chun Wang A B , Zhi Wang A , Jingci Li A and Qing Li AA College of Sciences, Agricultural University of Hebei, Baoding 071001, China.
B Corresponding author. Email: wangc69@yahoo.com.cn
Australian Journal of Chemistry 60(2) 146-148 https://doi.org/10.1071/CH06225
Submitted: 29 June 2006 Accepted: 21 December 2006 Published: 13 February 2007
Abstract
A green and efficient method for the preparation of 9-aryl-3,4,5,6,7,9-hexahydro-1H-xanthene-1,8(2H)-dione has been developed using functionalized ionic liquids as a catalyst and a reaction medium. The nature of both the counter anion and cation influence the catalytic performance of the ionic liquids. The ionic liquid can be recycled and reused without apparently loss of activity.
Acknowledgments
This work was financially supported by the Research Development Foundation of Agricultural University of Hebei (no. 2004-20; no. 2005-18).
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