Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 9 of 9 for “"Propyne"”.
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Experimental vapor-liquid equilibria of propyne with propane, propene and propadiene
… pure propene, impure propadiene and pure propyne and 19 binary mixtures of propane, propene, and propadiene with propyne are reported at -20, 5, 30, 55 and 80° C. An equation of state utilizing pure component saturated vapor and liquid densities is used to correlate all the data and the …
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An Experimental Investigation of the Role of Small Hydrocarbons and Combustion-Generated Nanoparticles on the Formation and Growth Reactions of Polycyclic Aromatic Hydrocarbons during the Pyrolysis of a Model-Fuel and Hydrocarbon Gases
… performed with the C<sub>3</sub> hydrocarbon, propyne; with catechol (<i>ortho</i>-dihydroxybenzene), a model-fuel representative of aromatic moieties in coal and biomass fuels; and with propyne and catechol together. Further, to better understand the role of fuel components and their …
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Raman Studies of Reorientational and Vibrational Relaxation in Dense Fluids
… relaxation in tetrafluoromethane and propyne, and of the vibrational relaxation in propyne and group IV tetramethyl compounds.
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Gas transport properties of reverse selective nanocomposite materials
… nanoparticles into poly(1-trimethylsilyl-1-propyne) (i.e., a super glassy polymer) and 1,2-polybutadiene (i.e., a rubbery polymer) has been examined. Particle dispersion has been investigated using atomic force microscopy and transmission electron microscopy to determine particle/aggregate …
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Probing the HIV Reverse-Transcriptase enzyme with novel bifunctional HIV-1 RT inhibitors of the general formula (NRTI)-spacer-(NNRTI)
… a convergent manner in 16 steps for the pentane-propyne target and 20 steps for the target bearing PEG-propyne units using Sonogashira coupling methodology as a key step. Chapter Three describes the second series incorporating a new NNRTI in the form of 2- and 4- pyrimidinylarylamine motifs. Key …
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Synthesis and anti-HIV activity of [d4U]-spacer-[HI-236] bifinctional HIV-1 reverse transcriptase inhibitors
… target and 19 steps for targets bearing PEG-propyne units usingSonogashira coupling as a key step. The most challenging step of the synthesisinvolved Boc deprotection and thiourea condensation in the final step, which sufferedfrom anomeric cleavage with loss of the sugar moiety. As a result, …
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Catalytic C-N and C-F bond formation by organometallic group 11 complexes
… the triple bond of 3-hexyne and 1-phenyl-l-propyne to form (fluorovinyl)gold(I) complexes, with exclusive geminal arrangement between the phenyl group and gold in the latter case. This addition is reversible, and the (fluorovinyl)gold(I) complexes can extrude alkyne to return (NHC)gold(I) …
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Synthesis, antimicrobial activity, and catalytic activity of rhodium and iridium piano stool complexes: Teaching an old dog new tricks
… annulation of 2-phenylimidazole with 1-phenyl-1-propyne catalyzed by a series of methyl-substituted [(indenyl)RhCl2] dimers. [(Ind*)RhCl2]2 was found to have significantly greater activity than [Cp*RhCl2]2 (100% vs. 51%). Two plausible catalytic cycles were proposed, one of which invokes a ring …
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Synthesis and selective reactivity of 14β-formyl 19-norsteroids
… based upon cycloaddition of a dienophilic 'propyne equivalent' to 3-methoxyestra-1,3,5(10),14,16-pentaen-17-yl acetate. The dienophile chosen for this purpose, methyl propiolate, reacted with the diene regio- and stereoselectively to give methyl 17β3-acetoxy-3-methoxy-14, …