1,3-Dibromo-5,5-dimethylhydantoin(DBH)/kaolin:An efficient reagent system for the synthesis of 14-aryl-14H-dibenzo[a,j]xanthenes under solvent-free conditions  

作　　者：Farhad Shirini Nader Ghaffari Khaligh Gholam Hossein Imanzadeh Parisa Ghods Ghasem-Abadi 

机构地区：[1]Department of Chemistry,College of Science,University of Guilan,Rasht 41335-19141,lran [2]Department of Chemistry,College of Science,University of Mohaghegh-Ardabili,Ardabil,lran [3]Department of Chemistry,College of Science,University of Mohaghegh-Ardabili,Ardabil,Iran

出　　处：《Chinese Chemical Letters》2012年第10期1145-1148,共4页中国化学快报（英文版）

基　　金：the University of Guilan Research Council for the partial support

摘　　要：1,3-Dibromo-5,5-dimethylhydantoin, has been used as an efficient catalyst for the synthesis of 14-aryl-14H-dibenzo[a,j]- xanthenes in the presence of kaolin. All reactions are performed in the absence of solvent in relatively short reaction times in good to high yields.1,3-Dibromo-5,5-dimethylhydantoin, has been used as an efficient catalyst for the synthesis of 14-aryl-14H-dibenzo[a,j]- xanthenes in the presence of kaolin. All reactions are performed in the absence of solvent in relatively short reaction times in good to high yields.

关 键 词：KAOLIN 1 3-Dibromo-5 5-dimethylhydantoin Xanthene derivatives Solvent-free conditions 

分 类 号：O626[理学—有机化学]