Grindstone chemistry: one-pot synthesis of spiro[diindenopyridine-indoline]triones and spiro[acenaphthylene-diindenopyridine]triones
作者:Ramin Ghahremanzadeh、Somayeh Ahadi、Ghazaleh Imani Shakibaei、Ayoob Bazgir
DOI:10.1016/j.tetlet.2009.11.041
日期:2010.1
A one-pot, pseudo four-component, and simple synthesis of spiro[diindenopyridine-indoline]triones and spiro[acenaphthylene-diiiidenopyridine]triones via the reaction of 1,3-indandione, aromatic amines and isatins or acenaphthylene-1,2-dione using a 'Grindstone Chemistry' method is reported. (C) 2009 Elsevier Ltd. All rights reserved.
Efficient Synthesis of Spiro[diindenopyridine-indoline]triones Catalyzed by PEG-OSO<sub>3</sub>H-H<sub>2</sub>O and [NMP]H<sub>2</sub>PO<sub>4</sub>
作者:Jayant Sindhu、Harjinder Singh、J. M. Khurana
DOI:10.1080/00397911.2014.906616
日期:2015.1.17
One-pot, three-component synthesis of spiro[diindenopyridine-indoline]triones has been reported via the reaction of 1,3-indandione, aromatic amines, and isatins with (PEG-OSO3H) as an efficient, polymeric acid surfactant-based catalyst in water and also in presence of acidic ionic liquid [NMP]H2PO4, which acts both as a medium and catalyst under conventional heating and ultrasonic irradiation. The reactions were complete in short reaction times with excellent yield of products. Surfactant-based PEG-OSO3H could be recycled and reused several times without any significant loss of activity. The compounds exhibit fluorescence in methanol with large Stokes shift.