Preparation of various xanthene derivatives over sulfonic acid functionalized imidazolium salts (SAFIS) as novel, highly efficient and reusable catalysts

MA Zolfigol, V Khakyzadeh, AR Moosavi-Zare…

Index: Zolfigol, Mohammad Ali; Khakyzadeh, Vahid; Moosavi-Zare, Ahmad Reza; Zare, Abdolkarim; Azimi, Seyedeh Bahareh; Asgari, Zhila; Hasaninejad, Alireza Comptes Rendus Chimie, 2012 , vol. 15, # 8 p. 719 - 736

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Citation Number: 73

Abstract

In this work, some novel sulfonic acid functionalized imidazolium salts (SAFIS), as a new category of ionic liquids, are synthesized by eco-friendly and simple procedures, and used as highly efficient and reusable catalysts to promote the following one-pot multicomponent organic transformations under solvent-free conditions:(i) the synthesis of 14-aryl-14H- dibenzo [a, j] xanthenes from β-naphthol (2eq.) and arylaldehydes (1eq.),(ii) the ...