H_4SiW_(12)O_(40):An efficient catalyst for the synthesis of new spiro-[dibenzo[a,i]xanthene- 14,3'-indoline]-2',8,13-triones  

作　　者：Li Min Yang Zhi Kui Yin Li Qiang Wu 

机构地区：[1]School of Pharmacy,Xinxiang Medical University,Xinxiang 453003,China

出　　处：《Chinese Chemical Letters》2012年第3期265-268,共4页中国化学快报（英文版）

基　　金：the financial support from Xinxiang Medical University

摘　　要：Novel spiro[dibenzo[a,i]xanthene-14,3＇-indoline]-2＇,8,13-triones were prepared by the three-component reaction ofβ-naphthol, isatins,and 2-hydroxy-1,4-naphoquinone in the presence of a catalytic amount of H_4SiW_（12）O_（40）.This protocol provides a simple one-step procedure with the advantages of easy work-up,mild reaction conditions and environmentally benign.Novel spiro[dibenzo[a,i]xanthene-14,3＇-indoline]-2＇,8,13-triones were prepared by the three-component reaction ofβ-naphthol, isatins,and 2-hydroxy-1,4-naphoquinone in the presence of a catalytic amount of H_4SiW_（12）O_（40）.This protocol provides a simple one-step procedure with the advantages of easy work-up,mild reaction conditions and environmentally benign.

关 键 词：Spiro[dibenzo[a i]xanthene-14 3＇-indoline] Β-NAPHTHOL 2-Hydroxy-1 4-naphoquinone H_4SiW_（12）O_（40） Solvent-free 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业] TQ426.94