2456-27-1Relevant academic research and scientific papers
Effect of Alcohol Structure on the Kinetics of Etherification and Dehydration over Tungstated Zirconia
Rorrer, Julie,Pindi, Suresh,Toste, F. Dean,Bell, Alexis T.
, p. 3104 - 3111 (2018/09/06)
Linear and branched ether molecules have attracted recent interest as diesel additives and lubricants that can be produced from biomass-derived alcohols. In this study, tungstated zirconia was identified as a selective and green solid acid catalyst for the direct etherification of primary alcohols in the liquid phase, achieving ether selectivities of >94 % for C6–C12 linear alcohol coupling at 393 K. The length of linear primary alcohols (C6–C12) was shown to have a negligible effect on apparent activation energies for etherification and dehydration, demonstrating the possibility to produce both symmetrical and asymmetrical linear ethers. Reactions over a series of C6 alcohols with varying methyl branch positions indicated that substituted alcohols (2°, 3°) and alcohols with branches on the β-carbon readily undergo dehydration, but alcohols with branches at least three carbons away from the -OH group are highly selective to ether. A novel model compound, 4-hexyl-1dodecanol, was synthesized and tested to further demonstrate this structure–activity relationship. Trends in the effects of alcohol structure on selectivity were consistent with previously proposed mechanisms for etherification and dehydration, and help to define possible pathways to selectively form ethers from biomass-derived alcohols.
METHOD FOR PRODUCING AN ORGANIC COMPOSITION CONTAINING AN N-NONYL ETHER
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, (2010/12/29)
The present invention relates to a method for producing an organic composition containing a functional component selected from the group consisting of a thermoplastic polymer, an enzyme, a setting agent, a paraffin, an oil, a colorant and a hair or skin care substance. The method includes providing an n-nonyl ether, a functional component which is able to react with an n-nonyl alcohol component, and, if appropriate, at least one further additive substance; and mixing the n-nonyl ether, the functional component and the at least one further additive substance. The invention further relates to a method for producing and using a molded article, a method for producing an item to be packaged, the use of at least one n-nonyl ether, a method for producing and/or cleaning the surfaces of boreholes, drilling devises or drill cuttings, and also to methods for producing an oil or a gas.
Process for the preparation of medium and long chain dialkyl ethers and catalysts
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Page 3-5, (2008/06/13)
Dehydration catalyst for 6-22C alcohols at raised temperature to mid- and long-chain dialkyl ethers comprises a tin haloalkane sulfonate.
SELENIUM DIOXIDE AND SELENIUM DISULFIDE AS GRIGNARD ELECTROPHILES
Hase, Tapio,Kangas, Paivi
, p. 281 - 282 (2007/10/02)
Selenium dioxide and a Grignard reagent give the 1-alkanol as the main product.The major products using selenium disulfide are the dialkylselenide and the dialkyl disulfide.Key words: selenium dioxide; selenium disulfide; Grignard reaction.
A NOVEL METHOD FOR THE PREPARATION OF SYMMETRICAL AND UNSYMMETRICAL ETHERS. TRITYL PERCHLORATE PROMOTED REDUCTION OF CARBONYL COMPOUNDS WITH TRIETHYLSILANE
Kato, Jun-ichi,Iwasawa, Nobuharu,Mukaiyama, Teruaki
, p. 743 - 746 (2007/10/02)
In the presence of a catalytic amount of trityl perchlorate, symmetrical ethers are prepared from aldehydes and triethylsilane, and unsymmetrical ethers are also obtained from carbonyl compounds, alkoxytrimethylsilanes and triethylsilane, in good yields, respectively.
SOLID - LIQUID PHASE TRNSFER CATALYSIS USING SOLID SODIUM HYDROXIDE IN PREPARATIVE ETHERS SYNTHESIS
Dou, H. JM.,Delfort, B.,Hassanaly, P.,Gallo, R.,Kister, J.
, p. 421 - 426 (2007/10/02)
Preparative ethers synthesis can be performed using P.T.C. if solid sodium hydroxide is used as basic medium.In this case, side reactions ( eg: hydrolysis or elimination ) are avoided.Moreover, secondary disymmetrical ethers can be synthesized starting from an alcohol and a secondary alkyl halide in acceptable yields.
