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New inorganic–organic hybrid materials based on SBA-15 molecular sieves involved in the quinolines synthesis

Paper ID Volume ID Publish Year Pages File Format Full-Text
55386 47050 2012 7 PDF Available
Title
New inorganic–organic hybrid materials based on SBA-15 molecular sieves involved in the quinolines synthesis
Abstract

In this paper we report on the first mesoporous catalyst based on SBA-15 incorporating simultaneously basic and acid functions able to promote the Friedländer reaction between 2-aminoaryl ketones and ethyl acetoacetate leading to quinolines 1 with high yields. From 2-aminobenzophenone (3a) it is possible to prepare quinoline 1a with the highest selectivity (86%) as compared with other mesoporous acidic catalysts. In contrast, the reaction catalyzed by amine-grafted SBA-15 yielded selectively (98%) the corresponding quinolone 2a in accordance with our previous results. Experimental results have been justified by theoretical calculations as function of the stability of reaction intermediate species, which could be involved in the process.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (40 K)Download as PowerPoint slideHighlights► SBA-15/APS was found to be an efficient catalyst for the Friedländer reaction. ► SBA-15/APS was the most selective catalyst for preparation of quinolines via Friedländer reaction. ► Quinoline 1a was synthesized with highest yield and selectivity.

Keywords
Mesoporous molecular sieve; Heterogeneous catalysis; Quinolines; SBA-15
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New inorganic–organic hybrid materials based on SBA-15 molecular sieves involved in the quinolines synthesis
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Today - Volume 187, Issue 1, 30 June 2012, Pages 97–103
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