Preparation of various xanthene derivatives over sulfonic acid functionalized imidazolium salts (SAFIS) as novel, highly efficient and reusable catalysts
作者:Mohammad Ali Zolfigol、Vahid Khakyzadeh、Ahmad Reza Moosavi-Zare、Abdolkarim Zare、Seyedeh Bahareh Azimi、Zhila Asgari、Alireza Hasaninejad
DOI:10.1016/j.crci.2012.05.003
日期:2012.8
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
摘要 在这项工作中,一些新型的磺酸功能化咪唑鎓盐(SAFIS)作为一种新型的离子液体,通过环保和简单的方法合成,并用作高效和可重复使用的催化剂,以促进以下一锅多组分无溶剂条件下的有机转化:(i) 从 β-萘酚 (2 eq.) 和芳醛 (1 eq.) 合成 14-芳基-14H-二苯并[a,j] 呫吨,(ii) 制备来自 β-萘酚、芳醛和二甲酮的四氢苯并 [a] 呫吨-11-酮,以及 (iii) 从二甲酮 (2 eq.) 和芳香醛 (1 eq.) 合成 1,8-二氧代-八氧杂蒽。环境友好、方法简单、后处理容易、反应清洁、反应时间短、收率高、催化剂易于制备是这项工作的一些优点。