I2-Catalyzed three-component procedure for synthesis of substituted spiro[indoline-3,7′-pyrano[3,2-c:5,6-c′]dichromene]-2,6′,8′-trione derivatives

I2-Catalyzed three-component procedure for synthesis of substituted... We report a facile and efficient method for synthesis of substituted spiro[indoline-3,7′-pyrano[5,6-c:5,6-c′]dichromene]-2,6′,8′-trione derivatives by reaction of isatin and 4-hydroxy-2H-chromen-2-one. As far as we are aware, few methods have been reported for preparation of these compounds. The reaction proceeded smoothly when promoted by molecular iodine. Because it is a non-toxic, low cost, and readily available reagent, iodine is a green catalyst for synthesis of these spiroheterocyclic compounds. The other advantages of the procure are high yields, simple operation, atom economy, and mild reaction conditions. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Research on Chemical Intermediates Springer Journals

I2-Catalyzed three-component procedure for synthesis of substituted spiro[indoline-3,7′-pyrano[3,2-c:5,6-c′]dichromene]-2,6′,8′-trione derivatives

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Publisher
Springer Netherlands
Copyright
Copyright © 2014 by Springer Science+Business Media Dordrecht
Subject
Chemistry; Catalysis; Physical Chemistry; Inorganic Chemistry
ISSN
0922-6168
eISSN
1568-5675
D.O.I.
10.1007/s11164-014-1688-4
Publisher site
See Article on Publisher Site

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