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Showing 1 to 9 of 9 for “"ethylidene"”.
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Model Chromia Surface Chemistry: C<sub>2</sub> Alkyl Fragment Reactions and Probe Molecule Interactions
… C₂-alkyl hydrocarbon fragments (i.e. ethyl, ethylidene and ethylidyne). Temperature programmed desorption studies indicate that both ethyl and ethylidene intermediates are selective towards ethylene. However, ethylidyne is more selective towards acetylene, but also produces ethylene in …
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I. Direct observation of o-xylylene (o-quinodimethane) in solution, Dimerization kinetics of some o-quinodimethanes; II. Kinetic and product studies on the dimerization of [alpha]-methyl-substituted o-quinodimethanes; III. Direct observation of 1,2-napthoquinodimethane and 9,10-phenanthroquinodimethane, Dimerization kinetics of resonance-stabilized o-quinodimethanes
… non-endo approach;The dimerization kinetics of 5-ethylidene-6-methylene-1,3-cyclohexadiene (9) and 5,6-bis(ethylidene)-1,3-cyclohexadiene (10) were studied by stopped-flow UV-visible spectroscopy. At 25(DEGREES)C in CH(,3)CN k(,9)/k(,1) = 0.59 and k(,10)/k(,1) = 0.016. The dimerization of 9 and 10 …
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Spectroscopic studies of hydrophobic association of merocyanine dyes in cationic and anionic micelles
… of 1-methyl-4- (oxocyclohexadienylidene) ethylidene -1,4-dihydropyridine (MOED) are yellow, red, violet, or blue, in water, ethanol, acetone or pyridine respectively.<sup>1</sup> More striking effects are observed when aqueous solutions are diluted with various proportions of the organic …
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The reaction of sodium on acetic anhydride
… results for the formation of vinyl acetate and ethylidene diacetate were obtained. 4. The small amount of hydrogen produced in this reaction is believed to correspond to the presence of acetic acid as an impurity. (If it represents acetic acid then the acetic anhydride used contained from 0.02% …
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Synthesis and Spectroscopic Study of Anticancer agent A-007 Prodrugs and Progress Towards the Synthesis of Tetramic acid Antibiotics
… chemists. Magnesidin (1-acetyl-3-octanoyl-5-ethylidene tetramic acid) has strong antimicrobial activity against bacteria that cause gingivitis and dental plaque. Current efforts toward the synthesis of Magnesidin are discussed along with the plans for the completion of synthesis.
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Chemical, Biological, and Preliminary In Vitro Studies of Novel Vanadium(IV) Complexes with Schiff Bases and Thiosemicarbazone Ligands
… (<em>E</em>)-<em>N</em>-ethyl-2-(1-(thiazol-2-yl)ethylidene)hydrazinecarbothioamide (acetylethTSC), were also prepared. All ligands were characterized by FT IR and electrochemistry. <em>N</em>-Ethhymethohcarbthio were characterized by elemental analysis whereas the reduced Schiff base and …
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Molecular studies of organometallic carbohydrates and related compounds.
… and 4,6-0- ethylidene-2,3-di-O-methanesulphonyl-alpha-D-glucopyranosyl chloride both possess pyranose rings with a 4C1 conformation. Conformational mobility has been examined by molecular graphics for two of the non-metallated carbohydrates: …
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Design and application of a bench scale evaporator for the treatment of coal power plant waste water
… Acid). However, HEDP (1-Hydroxy ethylidene-1,1-Diphosphonic Acid) yielded concentrations of scale forming ions lower than when no anti-scaling agent was dosed. This may be ascribed to the nature of complexes that HEDP forms with the scale forming ions. The application of MED …
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Synthesis and Characterization of Novel Polyimide Gas Separation Membrane Material Systems
… The 5,5'-[2,2,2-trifluoro-1-(trifluoromethyl)ethylidene]bis-1,3-isobenzenefurandione (6FDA)/DAPI system also exhibited low weight loss under nitrogen at 400°C, which was comparable to that of a wholly aromatic polyimide based on 1,2,4,5-benzenetetracarboxylic dianhydride …