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 20 of 22 for “"Methyl salicylate"”.
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Certain coloring matters derived from vanallin and methyl salicylate
… and to prepare another group by condensing methyl salicylate with acetophenone, para-methoxyacetophenone, meta-nitroacetophenone, and ortho-hydroxyacetophenone. Ethyl salicylate and para-methoxyacetophenone were condensed as a check.
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PART I PREPARATION OF NOVEL LACTONES AND THEIR PRECURSORS DERIVED FROM METHYL SALICYLATE PART II NUCLEOPHILIC AROMATIC SUBSTITUTION IN A DINITROSALICYLIC LACTONE WITH RING OPENING AND ELIMINATION VIA MEISENHEIMER INTERMEDIATES
… novel lactones and their precursors derived from methyl salicylate are described. The influence of substituents on the aromatic nucleus in affecting ring closure reactions was examined. Experimental results show that ring closure is enhanced when nitro groups are incorporated in the aromatic ring. …
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Resistance evaluation and management of Colorado potato beetle, Leptinotarsa decemlineata (Say), using novel chemistries
… 2012, indicated no control of L. decemlineata. Methyl salicylate is an organic compound produced by potato and other plants in response to insect herbivory. Abundance of predatory arthropods and L. decemlineata life stages were measured in plots treated with and without 5 g slow-release packets …
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Temperature Programmed Desorption and Infrared Spectroscopic Studies of Interfacial Hydrogen Bonds for Small Molecules Adsorbed on Silica and Within Metal Organic Frameworks
… 2-chloroethyl ethyl sulfide (2-CEES) and methyl salicylate on well-characterized hydroxyl-functionalized surfaces (silica and UiO-66). Our approach utilized infrared spectroscopy to study specific surface-molecule interactions and temperature-programmed desorption to measure activation …
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Synthesis of Novel Agrochemicals as Potential Plant Immunization Agents.
… mediated pathogen resistance pathway, converting methyl salicylate (MeSA) to salicylic acid (SA), a key compound responsible for SAR . S-methyl benzo [1, 2, 3,] thiadiazole-7-carbothiate (BTH) was the first commercial compound used for plant immunization. We have synthesized and characterized …
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IN VITRO ANTIBACTERIAL ACTIVITY OF 12 COMMERCIAL MOUTHRINSE FORMULATIONS.
… Manassas, VA; containing C31G complex of alkyl dimethyl amine oxide and alkyl dimethyl glycine plus 8% alcohol), 8.) Listerine Cool Mint Zero Alcohol (Johnson & Johnson Consumer, Inc., Skillman, NJ, USA; containing essential oils 0.092% eucalyptol, 0.042% menthol, 0.06% methyl salicylate, and …
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Ab Initio Studies of Intramolecular Proton Transfer and Electronic Relaxation
… primarily in the context of malonaldehyde and methyl salicylate, molecules possessing a labile hydrogen atom at the mouth of a five-membered ring composed of both keto and enol fragments. AIMS simulations predicted that ESIPT proceeds in 10-50 fs, and that the transfer itself is ""gated"" by …
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Effects of water chemistry and panning on flavor volatiles and catechins in teas (Camellia sinensis)
… contents of linalool oxide, cis jasmone, methyl salicylate in oolong tea. Overall, panning significantly changes the volatile compositions of the tea and created new aroma active compounds.
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Molecular Dynamics of Interfacial Phenomena at Air/ice, Air/water, and Air/salt Water Interfaces
… ROSs (O3, OH, H2O2 and HO2) and GLVs (2-methyl-3-buten-2-ol (MBO) and methyl salicylate (MeSA)) on atmospheric air/water or air/ice interfaces was investigated using classical molecular dynamics (MD) simulations and potential of mean force (PMF) calculations. All aromatics, ROSs and GLVs …
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Molecular Simulation Study of Oil Hydrocarbons, Dispersants and Other Organics in Atmospheric Air/Water Interfaces
… for the four GLVs we studied (i.e. 2-methyl-3-buten-2-ol, methyl salicylate, cis-3-hexen-1-ol and cis-3-hexenylacetate). Furthermore, our PMF results indicate that these GLVs have deep free energy minima at the air/water interfaces, which implies that these compounds have a …
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Characterization of the Plant CXE Carboxylesterase Family
… Kinetic analysis with a series of 4-methyl umbelliferyl esters showed that substrate affinity for all four CXEs increases as the acyl chain length increases. Reaction efficiency of the plant CXEs is split along clade boundaries, with the two clade II enzymes preferring short acyl …
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Studies of the mechanisms involved in host finding and mating behaviour of the African coffee white stem borer, Monochamus leuconotus (pascoe) (Cleoptera: Cerambycidae)
… were added, particularly (R)-(-)-linalool and methyl salicylate. Intercept panel traps and MK2 rat traps were effective in retaining insects caught. Floral surveys conducted around coffee fields to identify alternative host plants did not give conclusive evidence on the existence of alternative …
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Investigations of the integrated pest management of Colorado potato beetle, Leptinotarsa decemlineata (Say): Host plant preference, development of semiochemical-based strategies, and evaluation of a novel insecticide
… CPB have been shown to be attracted to (S)-3,7-dimethyl-2-oxo-oct-6-ene-1,3-diol [(S)-CPB I], a male-produced aggregation pheromone. Field studies were conducted to determine if the opposite enantiomer of the pheromone, (R)-CPB I had an effect on CPB in the field. Results revealed no differences …
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Ultrahigh Vacuum Studies of the Fundamental Interactions of Chemical Warfare Agents and Their Simulants with Amorphous Silica
… series, the simulants diisopropyl methylphosphonate (DIMP), dimethyl methylphosphonate (DMMP), trimethyl phosphate (TMP), dimethyl chlorophosphate (DMCP), and methyl dichlorophosphate (MDCP) were all observed to interact with the silica surface through the formation of a hydrogen …
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Fundamental Study of Particle Formation, Transport, Deposition and Filtration for Semiconductor Applications
… media. In Chapter 2, the detection method for methyl salicylate molecules which is one of the volatile organic samples by using soft X-ray and aerosol measurement techniques was described. The aromatic chemical compounds which have the benzene ring are well detected by the soft X-ray-assisted …
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The phylogeny, morphological evolution and biogeography of the Gaultherieae (Ericaceae).
… is thought to be diagnosable by the presence of methyl salicylate, although this compound has apparently been lost in many species (or has not been detected). Phylogenetic analyses using DNA sequence data have shown that the Gaultherieae and the wintergreen group are monophyletic. Optimization of …
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Stimulation of Western Australian Sandalwood (Santalum spicatum) oil production using multiple treatments [thesis]
… applied: a dowel soaked with the plant hormone Methyl Salicylate (MeSA) and inserted into the tree (Treated Dowel treatment), a dowel with no MeSA inserted into the tree (Blank Dowel treatment), a drill hole left empty (Empty Drill treatment), and a section of bark removed from the tree (Bark …
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Plant-insect interactions between female dogwood borer and apple
… four of which (octanal, nonanal, decanal, and methyl salicylate) were identified from all apple tissues sampled. A novel compound,α-bergamotene, was identified from injured apple bark, from apple burr knots infested with dogwood borer larvae and from larval dogwood borer frass, and appears to …
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