| Relative efficiency of free fatty acid butyl esterification choice of catalyst and derivatisation procedure. | |
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MedLine Citation:
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PMID: 18533162 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The conversion efficiency of alkanoic, alkenoic, branched, alicyclic, aromatic, keto-substituted, and dioic carboxylic acids to their corresponding butyl esters was compared under different reaction conditions (time, temperature, catalyst). We show that boron trifluoride is generally a more efficient catalyst than sulphuric acid. However, optimum derivatisation conditions vary strongly for different acids and no single derivatisation protocol can be employed without certain losses. Therefore, care must be taken when the simultaneous quantitative analysis of different types of carboxylic acids in one sample is envisaged. Addition of water-scavenging reagents to the reaction mixture caused the formation of artefacts and selectively decreased reaction yields. |
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Authors:
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Christian Hallmann; Ben G K van Aarssen; Kliti Grice |
Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2008-05-22 |
Journal Detail:
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Title: Journal of chromatography. A Volume: 1198-1199 ISSN: 0021-9673 ISO Abbreviation: J Chromatogr A Publication Date: 2008 Jul |
Date Detail:
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Created Date: 2008-06-20 Completed Date: 2008-09-22 Revised Date: 2009-01-15 |
Medline Journal Info:
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Nlm Unique ID: 9318488 Medline TA: J Chromatogr A Country: Netherlands |
Other Details:
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Languages: eng Pagination: 14-20 Citation Subset: IM |
Affiliation:
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Department of Applied Chemistry, Curtin University of Technology, GPO Box U1987, Perth, Western Australia 6845, Australia. C.Hallmann@curtin.edu.au |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Carboxylic Acids
/
analysis,
chemistry Catalysis Esterification Fatty Acids, Nonesterified / chemistry* Gas Chromatography-Mass Spectrometry Temperature Time Factors |
| Chemical | |
Reg. No./Substance:
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0/Carboxylic Acids; 0/Fatty Acids, Nonesterified |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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