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Showing 1 to 20 of 40 for “"Diethyl ether"”.

  1. 25cc HCCI engine fueled with Diethyl Ether

    Lemberger, IanDepartment of Mechanical Engineering2009

    This research forms part of an ongoing HCCI study at the SASOL Advanced Fuels Laboratory to investigate and understand engine configuration and fuel chemistry effects on combustion in HCCI engines. This project continues from a previous project where a small Progress Aero Works (PAW) 6.5cc high …

    cape-town Repository record

  2. The electrolysis of lithium alkyls and ethyl magnesium bromide in lithium borohydride-diethyl ether solutions

    Disney, John L.Virginia Polytechnic Institute1955

    … investigation was to study the electrolysis of diethyl ether solutions of lithium methyl, lithium ethyl, lithium butyl, or ethyl magnesium bromide in the presence of lithium borohydride.

    vt Repository record

  3. Thermochemistry of fluorinated aldehydes and corresponding radicals;thermochemistry and kinetics of diethyl ether and ethyl oxirane relative to reactions under atmospheric and combustion conditions

    Purnell, Douglas Lee, Jr.

    … comparison to available literature values. Ethers C—H BDEs in the primary position in comparison to the secondary position increase by 3-8 kcal mole^{-1} for aliphatic chains. Cyclic ethers posses Entropies (S*298 in cal/mole K) are estimated using B3-LYP methodology with basis sets …

    njit Repository record

  4. Solid-state NMR (¹³C, ²⁷Al and ²⁹Si) study of the reaction between AlMe₃ and the silica gel surface

    Li, Jianhua, author, Maciel, Gary E., advisorColorado State University. Libraries2007

    … surface after it was washed with dry diethyl ether; the ether-washed surface after it was treated, in steps, with limited amounts of H2O; and finally the H2O-reacted surface after an excess-H2O workup. Solid-state NMR (13C, 27 Al and 29Si) have been used to elucidate the structures of …

    colostate Repository record

  5. Organomanganese compounds in organic synthesis

    Prasad, Narendra JaiUniversity of Waikato2009

    … however, the type of product that formed in diethyl ether (3-4) was the one dominant in acetonitrile in the MeMn(CO)₅ study, and that formed in acetonitrile (3-5) was the dominant product type in diethyl ether (3-4). There was no apparent explanation for this reverse reactivity. Ferrocenyl …

    waikato-masters Repository record

  6. The use of enzymes in organic solvents in polytransesterification reactions

    Wiggett, Adrian J.Aston University1998

    … trichloroethyl) adipate and glutarate systems in diethyl ether, with and without molecular sieves. It was found that molecular sieves promoted the reaction by reducing hydrolysis of the ester end-groups, resulting in polymer molecular weights between 1.2 and 2.2 times greater than those obtainable …

    aston Repository record

  7. The use of enzyme catalysts in organic media for the synthesis of biodegradable polyesters

    Samra, B.K.Aston University1996

    … pancreatic lipase (PPL) suspended in anhydrous diethyl ether. Addition of molecular sieve to the above system gave higher molecular weight products. The PPL catalysed reaction of bis(2,2,2-trichlorethyl) adipate and glutarate with butane-1,4-diol in anhydrous ether with and without molecular …

    aston Repository record

  8. A tale of two small oxygenated molecules as told by photoelectron photoion coincidence spectroscopy

    Easter, Chrissa Michelle Mozaffari2018

    … two small oxygenated species are presented here. Diethyl Ether (Et2O) and Acetic Anhydride (AcOAc) were chosen because of their and their fragments' relevance to combustion chemistry. The Imaging PEPICO (iPEPICO) experiment at the VUV beamline of the Swiss Light Source (SLS) was utilized to …

    u-pacific Repository record

  9. Studies in ring D fragmentation of estrone

    Ray, Peter ChristopherDepartment of Chemistry1998

    … in an overall yield of 60% from estrone 3-methyl ether. The fragmentation approaches involved conjugate stannylation and silylation of 3-methoxyestra-1,3,5,(10), 15-tetraen-17 -one to give the 15β-trimethylstannyl and 15β-trimethylsilyl 17 -ketones respectively. The stannyl ketone was converted to …

    cape-town Repository record

  10. Brønsted acid-catalyzed stereoselective allylation of exo-glycals with allyltrimethylsilane

    Patel, OmikUniversity of Ontario Institute of Technology2022

    … in the presence of a tetrafluoroboric acid diethyl ether complex. In contrast to previously reported procedures, this reaction proceeds in a diastereoselective manner to afford α-allyl substituted pyranose.

    uoit Repository record

  11. Brønsted Acid-Catalyzed Reactions of Vinylboronic Acids and Benzhydryl Alcohols

    Barichello, Renata OliviaUniversity of Ontario Institute of Technology2020

    … is reported. The use of tetrafluoroboric acid diethyl ether complex (HBF4·OEt2) in substoichiometric amounts is desirable as it allows for the introduction of the desired alkene structural motif under less harsh conditions than the previously reported methodologies. Using milder reaction …

    uoit Repository record

  12. Quantitative Determination of Acetylsalicyclic Acid and Acetaminophen by Q-NMR (Quantitative Nuclear Magnetic Resonance) Technique

    Kanduri, Gouthami2014

    … acid and acetaminophen by Proton-NMR using diethyl ether as an internal standard. The area of NMR signals shows a linear relationship with the concentration. Acetylsalicylic acid and acetaminophen were chosen as a representative drug. The method is useful for a wide variety of drugs. Our …

    govst Repository record

  13. Phase separation spinning of polypropylene fibers

    Andrade, Carlos A.Virginia Polytechnic Institute and State University1972

    … naphthalene was extracted from the fibers using diethyl ether the fiber's properties were measured. Deniers and diameters of the fibers varied inversely with the spinning draw ratio. The fibers had void fractions ranging from 0.20 to 0.70. The porosity of the fibers was inversely proportional to …

    vt Repository record

  14. High coordination number compounds of thorium borohydride, and of calcium and strontium N,N-dimethylaminodiboranates

    Dunbar, AndrewUniversity of Illinois at Urbana-Champaign2012

    … reaction of ThCl4 with six equiv. of LiBH4 in diethyl ether produces the compound [Li(Et2O)2][Th(BH4)5], the thorium center in this molecule is surrounded by six borohydride ligands. Four of these six borohydrides are coordinated in a tridentate κ3 fashion, and the other two BH4- groups bridge …

    uiuc Repository record

  15. Some studies in inorganic flourine chemistry

    Tan, Queng-HuiVirginia Polytechnic Institute and State University1970

    … SF₅NOsO₃ by the reaction of OsO₄ and SF₅NH₂ in diethyl ether was not successful. The product obtained was a pale yellow crystalline substance which was identified as OsO₄ by infrared spectra and mass spectrometric data. No indication of SF₅NOsO₃ was observed. Several attempts to prepare …

    vt Repository record

  16. Properties and characteristics of polypropylene fibers spun by the phase-separation technique

    Williams, Matthew CarlVirginia Polytechnic Institute and State University1971

    … could be extracted from the fibers by diethyl ether in less than one minute; however, this extraction was not necessary prior to properties testing because all of the naphthalene in the fibers exposed to air was lost by sublimation. Deniers of 14 selected fiber samples varied inversely …

    vt Repository record

  17. Synthesis and cycloaddition chemistry 1,3-Bis(phenylsulfonyl)propadiene

    Desmond-Smith, Nicholas StuartDepartment of Chemistry1998

    … to be stable under refluxing conditions towards diethyl ether, chloroform, ethyl acetate and benzene. Reaction with methanol occurred to yield (E)-2-methoxy-1 ,3-bis(phenylsulfonyl)prop-I-ene and with tetrahydrofuran to yield 2-(2-tetrahydrofuranyl)-(E)-1 ,3-bis(phenylsulfonyl)propene, in a novel …

    cape-town Repository record

  18. Comparing Extraction Methods in Sample Preparation for the Quantification of Cannabinoids in Industrial Hemp

    Sandbrook, Ann MarieVirginia Tech2021

    … Extraction methods evaluated include: QuEChERS, diethyl ether, ethanol, and methanol. Extracts obtained via these methods were subject to quantitative cannabinoid analysis by UPLC/PDA. Standard curves for quantification of each cannabinoid were constructed using authentic standards for …

    vt Repository record

  19. Investigations of steroidogenic capabilities of the early embryo

    Grube, Kenneth EugeneVirginia Tech1977

    … and control cultures were extracted with diethyl ether and progesterone and estradiol isolated on Sephadex LH-20 columns prior to quantification by radioimmunoassay. Viability for all cultures was 95.6 + .05% (~+SD). In Experiment I, incubated progesterone and estradiol were .31 + .17 and …

    vt Repository record

  20. NMR Studies on Model Membranes. Interaction with Metal Ions, Ionophores and General Anaesthetics

    Jones, IanPolytechnic of Wales1984

    … route.<br/><br/>The observation that ethanol and diethyl ether increased the degree of fusion and permeability induced by channels, while chloroform inhibited them suggested a common locus of action on the properties and structure of channel-associated water. These results were discussed in terms …

    southwales Repository record

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