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
DOI:10.1016/j.cclet.2012.08.008
日期:2012.10
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.
1,3-二溴-5,5-二甲基乙内酰脲已被用作在高岭土存在下合成14-芳基-14 H-二苯并[ a,j ]黄嘌呤的有效催化剂。所有反应均在不存在溶剂的情况下以相对短的反应时间进行,以高至高收率进行。