Synthesis of Spiro[indoline-3,2′-quinoline] Derivatives through a Four-Component Reaction
作者:Jing Sun、Yan Sun、Hong Gao、Chao-Guo Yan
DOI:10.1002/ejoc.201101737
日期:2012.4
An efficient synthetic procedure for the synthesis of functionalized tetrahydrospiro[indoline-3,2′-quinoline] derivatives was successfully developed and involves the four-componentreaction of arylamines, dimethyl acetylenedicarboxylate, isatins, and a cyclohexane-1,3-dione in acetic acid. The advantages of this reaction include the use of common starting materials and mild reaction conditions and
Heterogeneous bimetallic ZnFe2O4 nanopowder catalysed facile four component reaction for the synthesis of spiro[indoline-3,2′-quinoline] derivatives from isatins in water medium
作者:Kamalesh Debnath、Animesh Pramanik
DOI:10.1016/j.tetlet.2015.02.030
日期:2015.3
The bimetallic ZnFe2O4 nanopowder, a dual Lewis acid base combined catalyst is found to efficiently catalyse a four component reaction for the synthesis of functionalized tetrahydrospiro[indoline-3,2'-quinoline] derivatives from arylamines, dialkyl acetylenedicarboxylates, isatin derivatives and cyclohexane-1,3-diones in water medium at room temperature. Reduced reaction time, operational simplicity, elimination of hazardous solvent and more importantly, easy recoverability and reusability of the nanopowder make the present methodology economical, green and sustainable. (C) 2015 Elsevier Ltd. All rights reserved.