[Hmim][HSO<sub>4</sub>]: An Efficient and Reusable Catalyst for the Synthesis of Spiro[dibenzo[a,i]-xanthene-14,3'-indoline]-2',8,13-triones and Spironaphthopyran[2,3-d]pyrimidine-5,3'-indolines
作者:Xiaojuan Yang、Limin Yang、Liqiang Wu
DOI:10.5012/bkcs.2012.33.2.714
日期:2012.2.20
These activities, combined with diverse chemicalbehavior make quinones attractive targets in organic syn-thesis.The removal of volatile organic solvents in organic reac-tions is the most important goal in green chemistry. One ofthe most efficient protocols to reach this aim is replacementof the volatile solvents with ionic liquids possessing lowvolatility, high thermal stability, non-flammability,
Abstractmagnified image A clean, one‐pot and three‐component synthesis of new spironaphthopyrano[2,3‐d]pyrimidine‐5,3′‐indoline derivatives by cyclo‐condensation reaction of isatins, 2‐naphthol, and barbituric acids in aqueous media is reported. J. Heterocyclic Chem., (2010).