An efficient and eco-friendly synthesis of 14-aryl-14H-dibenzo[a,j]xanthenes using H_4[SiW_(12)O_(40)]as a heterogeneous and reusable catalyst under solvent-free conditions  

作　　者：S.Allameh A.Davoodnia A.Khojastehnezhad 

机构地区：[1]Department of Chemistry,Faculty of Sciences,Islamic Azad University,Mashhad Branch,Mashhad 91735-413,Iran

出　　处：《Chinese Chemical Letters》2012年第1期17-20,共4页中国化学快报（英文版）

摘　　要：A simple and efficient catalytic protocol for the synthesis of 14-aryl-14H-dibenzo[a,j]xanthenes via the one-pot condensation ofβ-naphthol and aryl aldehydes using silicotungstic acid（H_4[SiW_（12）O_（40）]） is reported.The present method offers several advantages such as high to excellent yields,short reaction times,recovery and reusability of catalyst,mild reaction conditions and easy workup procedures.A simple and efficient catalytic protocol for the synthesis of 14-aryl-14H-dibenzo[a,j]xanthenes via the one-pot condensation ofβ-naphthol and aryl aldehydes using silicotungstic acid（H_4[SiW_（12）O_（40）]） is reported.The present method offers several advantages such as high to excellent yields,short reaction times,recovery and reusability of catalyst,mild reaction conditions and easy workup procedures.

关 键 词：Dibenzo[a j]xanthenes Reusable catalyst Solvent-free conditions β-Naphthol Aryl aldehydes 

分 类 号：TQ203[化学工程—有机化工]