Highly efficient and green synthesis of 14-aryl(alkyl)-14H-dibenzo[a,j]xanthene and 1,8-dioxooctahydroxanthene derivatives catalyzed by reusable zirconyl triflate[ZrO(OTf)_2]under solvent-free conditions  

作　　者：Iraj Mohammadpoor-Baltork Majid Moghadam Valiollah Mirkhani Shahram Tangestaninejad Hamid Reza Tavakoli 

机构地区：[1]Department of Chemistry,Catalysis Division,University of Isfahan,Isfahan 81746-73441,Iran

出　　处：《Chinese Chemical Letters》2011年第1期9-12,共4页中国化学快报（英文版）

基　　金：the Center of Excellence of Chemistry and Research Council of University of Isfahan for financial support of this work

摘　　要：An efficient, convenient and green method has been introduced for the preparation of 14-aryl（alkyl）-14H-dibenzo[a,j]xanthene and 1,8-dioxooctahydroxanthene derivatives by the reaction of aldehydes with 2-naphthol and 5,5-dimethyl-1,3-cyclohexanedione, respectively, in the presence of ZrO（OTf）2 as a reusable catalyst under solvent-free conditions. In addition, very short reaction times, excellent yields, straightforward procedure, and relatively non-toxicity of the catalyst are other noteworthy advantages of the present method.An efficient, convenient and green method has been introduced for the preparation of 14-aryl（alkyl）-14H-dibenzo[a,j]xanthene and 1,8-dioxooctahydroxanthene derivatives by the reaction of aldehydes with 2-naphthol and 5,5-dimethyl-1,3-cyclohexanedione, respectively, in the presence of ZrO（OTf）2 as a reusable catalyst under solvent-free conditions. In addition, very short reaction times, excellent yields, straightforward procedure, and relatively non-toxicity of the catalyst are other noteworthy advantages of the present method.

关 键 词：XANTHENES Zirconyl triflate ALDEHYDES 2-NAPHTHOL Reusable catalyst 

分 类 号：O621.36[理学—有机化学]