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Gold(III) chloride (HAuCl4·3H2O) in PEG: A new and efficient catalytic system for the synthesis of functionalized spirochromenes

Paper ID Volume ID Publish Year Pages File Format Full-Text
40922 45871 2012 9 PDF Available
Title
Gold(III) chloride (HAuCl4·3H2O) in PEG: A new and efficient catalytic system for the synthesis of functionalized spirochromenes
Abstract

Gold(III) chloride (HAuCl4·3H2O) in PEG 400 was found to be an efficient catalytic system for the synthesis of biologically important functionalized spirochromene derivatives via one-pot three-component reaction of isatins/acenaphthoquinone, active methylene compounds and cyclic 1,3-diketones/4-hydroxycoumarin. A new catalytic system, recyclability of reaction medium, little reaction times and excellent yields with easy workup render this protocol more attractive and economically viable.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (278 K)Download as PowerPoint slideHighlights► Eco-friendly method for the synthesis of functionalized spirochromenes. ► Gold(III) chloride (HAuCl4·3H2O) is used as soft carbophilic Lewis acid catalyst. ► Recyclability of polyethylene glycol (PEG). ► Multicomponent reaction. ► This protocol is green and advantageous with high yields and less reaction time.

Keywords
Multicomponent reaction (MCR); Isatins or Acenaphthoquinone; Active methylene compounds; Cyclic 1,3-diketones; Gold(III) chloride (HAuCl4·3H2O); Polyethylene glycol (PEG); Spirochromenes
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Gold(III) chloride (HAuCl4·3H2O) in PEG: A new and efficient catalytic system for the synthesis of functionalized spirochromenes
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volumes 425–426, 28 May 2012, Pages 35–43
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us