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Knoevenagel condensation reaction catalyzed by task-specific ionic liquid under solvent-free conditions

Paper ID Volume ID Publish Year Pages File Format Full-Text
51904 46858 2008 4 PDF Available
Title
Knoevenagel condensation reaction catalyzed by task-specific ionic liquid under solvent-free conditions
Abstract

A task-specific ionic liquid, [H3N+–CH2–CH2–OH][CH3COO−] was synthesized and used as catalyst in the Knoevenagel condensation reaction of various kinds of aromatic aldehydes with ethyl cyanoacetate or malononitrile. α,β-Unsaturated carbonyl compounds were obtained in reasonable yields when the [H3N+–CH2–CH2–OH][CH3COO−] catalyzed Knoevenagel reaction was carried out at room temperature for several to 60 min under solvent-free conditions. Only E-isomers were detected. The task-specific ionic liquid after removed water could be recycled and reused for five times without noticeably decreasing the catalytic activity. The mechanism of the [H3N+–CH2–CH2–OH][CH3COO−] catalyzed Knoevenagel reaction was discussed.

Keywords
Task-specific ionic liquid; Knoevenagel condensation; α,β-Unsaturated carbonyl compounds
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Knoevenagel condensation reaction catalyzed by task-specific ionic liquid under solvent-free conditions
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 9, Issue 7, 1 April 2008, Pages 1571–1574
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
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Price after discount Only $4.95
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Full-text PDF Download
Online Support
Any Questions? feel free to contact us