1374747-70-2Relevant academic research and scientific papers
New Crown Ether-Based Nano Ionic Liquid ([DB-18-C-6K+][OH?] nIL): A Versatile Nanocatalyst for the Synthesis of Spiro[indoline-3,2″-quinoline] Derivatives via the Cascade Four-Component Reaction of Arylamines, Dialkylacetylenedicarboxylates, Isatins and Dimedone
Nikoofar, Kobra,Khani, Shiva
, p. 1651 - 1658 (2018)
Abstract: A new nano-size crown ether-based ionic liquid on the basis of dibenzo-18-crown-6 ([DB-18-C-6K+][OH?] nIL) has been synthesized via a simple procedure and characterized through fourier transform infrared spectroscopy, nuclear magnetic resonance spectroscopy, high-resolution scanning electron microscopy, energy-dispersive X-ray spectroscopy, thermogravimetric/differential thermal analysis, and UV–Vis spectroscopy techniques The obtained catalyst has been utilized for the one-pot, four-component synthesis of spiro[indoline-3,2′-quinoline] derivatives from the combination of isatins, amines, dimedone, and dialkylacetylenedicarboxylates. The advantages of this protocol included the use of common and easily-available starting materials, utilizing ambient temperature, non-toxic and inexpensive reagent usage, high yields of products, and operationally simple procedure.
Heterogeneous bimetallic ZnFe2O4 nanopowder catalysed facile four component reaction for the synthesis of spiro[indoline-3,2′-quinoline] derivatives from isatins in water medium
Debnath, Kamalesh,Pramanik, Animesh
supporting information, p. 1654 - 1660 (2015/03/14)
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 aryl
Synthesis of spiro[indoline-3,2′-quinoline] derivatives through a four-component reaction
Sun, Jing,Sun, Yan,Gao, Hong,Yan, Chao-Guo
supporting information; experimental part, p. 1976 - 1983 (2012/05/31)
An efficient synthetic procedure for the synthesis of functionalized tetrahydrospiro[indoline-3,2′-quinoline] derivatives was successfully developed and involves the four-component reaction 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 it is operationally simple. An efficient synthetic procedure for the synthesis of functionalized tetrahydrospiro[indoline-3, 2′-quinoline] derivatives was successfully developed and involves the four-component reaction of arylamines, dimethyl acetylenedicarboxylate, isatins, and a cyclohexane-1,3-dione in acetic acid. Copyright
