fulltext.study @t Gmail

ZrOCl2.8H2O/SiO2: An efficient and recyclable catalyst for the preparation of coumarin derivatives by Pechmann condensation reaction

Paper ID Volume ID Publish Year Pages File Format Full-Text
51718 46851 2011 6 PDF Available
Title
ZrOCl2.8H2O/SiO2: An efficient and recyclable catalyst for the preparation of coumarin derivatives by Pechmann condensation reaction
Abstract

Silica gel supported zirconyl chloride octahydrate was found to be an efficient and recyclable catalyst for the synthesis of a series of biologically important molecules in high turnover numbers and rates. Several substituted coumarins can be prepared in high yield and purity by direct reaction of β-keto esters and phenol derivatives in the presence of a catalytic amount of ZrOCl2.8H2O/SiO2 as Lewis acid and at ambient temperature under solvent-free conditions. This method which is called Pechmann condensation is a very easy and a rapid reaction for the synthesis of coumarin derivatives.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► ZrOCl2.8H2O/SiO2: an efficient catalyst for synthesis of coumarins. ► Synthesis of coumarin compounds by Pechmann condensation. ► Study of supporting of ZrOCl2.8H2O on SiO2. ► Study of reusability of the ZrOCl2.8H2O/SiO2 in synthesis of coumarins. ► Comparison of the results for preparation of coumarins with other catalysts.

Keywords
Coumarin; Recyclable catalysts; Silica gel; Zirconyl chloride octahydrate; Solvent-free conditions
First Page Preview
ZrOCl2.8H2O/SiO2: An efficient and recyclable catalyst for the preparation of coumarin derivatives by Pechmann condensation reaction
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
Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 14, Issue 1, 25 October 2011, Pages 62–67
Authors
, ,
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