Academic literature on the topic 'Aromatic aldehydes'

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Journal articles on the topic "Aromatic aldehydes"

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Ma, Yunjian, Zongquan Li, Hao Zhang, Vincent Kam Wai Wong, Frank Hollmann, and Yonghua Wang. "Bienzymatic Cascade Combining a Peroxygenase with an Oxidase for the Synthesis of Aromatic Aldehydes from Benzyl Alcohols." Catalysts 13, no. 1 (2023): 145. http://dx.doi.org/10.3390/catal13010145.

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Aromatic aldehydes are important aromatic compounds for the flavour and fragrance industry. In this study, a parallel cascade combining aryl alcohol oxidase from Pleurotus eryngii (PeAAOx) and unspecific peroxygenase from the basidiomycete Agrocybe aegerita (AaeUPO) to convert aromatic primary alcohols into high-value aromatic aldehydes is proposed. Key influencing factors in the process of enzyme cascade catalysis, such as enzyme dosage, pH and temperature, were investigated. The universality of PeAAOx coupled with AaeUPO cascade catalysis for the synthesis of aromatic aldehyde flavour compou
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Deng, Haibo, Hao Zhang, Zelong Wu, Xiuzhi Tian, Xue Jiang, and Weimin Guo. "Rules and mechanism for the oxidation of lignin-based aromatic aldehyde under alkaline wet oxygen." BioResources 15, no. 2 (2020): 3487–503. http://dx.doi.org/10.15376/biores.15.2.3487-3503.

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To explore the extensive oxidative mechanism of syringaldehyde, vanillin, and p-hydroxybenzaldehyde during the alkaline wet oxidation process (AWOP), the yield of these aromatic aldehydes from AWOP at various temperatures and reaction times was studied. The results showed that the aromatic aldehydes could not be converted into the corresponding aromatic acids during the AWOP, and that the aromatic aldehyde was stable when subjected to the oxygen-free AWOP. However, as the reaction temperature increased or the number of methoxyl groups on the aromatic ring increased, the yield of aromatic aldeh
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Kawajiri, Takahiro, Reiya Ohta, Hiromichi Fujioka, Hironao Sajiki, and Yoshinari Sawama. "Aromatic aldehyde-selective aldol addition with aldehyde-derived silyl enol ethers." Chemical Communications 54, no. 4 (2018): 374–77. http://dx.doi.org/10.1039/c7cc08936h.

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Zhou, Baocheng, and Wenxing Chen. "The Zwitterionic Imidazolium Salt: First Used for Synthesis of 4-Arylidene-2-phenyl-5(4H)-oxazolones under Solvent-Free Conditions." Journal of Chemistry 2013 (2013): 1–5. http://dx.doi.org/10.1155/2013/280585.

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The zwitterionic imidazolium salt was prepared and characterized by1H NMR. It was first used for synthesis of azlactones via Erlenmeyer synthesis from aromatic aldehydes and hippuric acid under solvent-free conditions. It was found that aldehyde substituents play an important role in these reactions. Better conversions and therefore higher isolated yields were observed when electron-withdrawing groups (EWG-) were present in the aromatic aldehyde. Opposite results were shown when electron-donating groups (EDG-) were present in the aromatic aldehyde. However, azlactones were obtained in moderate
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Yang, Xue-Qing, Zhen-Yu Yi, Sheng-Fu Wang, Ting Chen, and Dong Wang. "Construction of 2D extended cocrystals on the Au(111) surface via I⋯Oaldehyde halogen bonds." Chemical Communications 56, no. 24 (2020): 3539–42. http://dx.doi.org/10.1039/d0cc00199f.

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Vishvanath, D. Patil, P. Patil Ketan, R. Sutar Nagesh, and V. Gidh Prathamesh. "Efficient synthesis of biscoumarins using zinc acetate as a catalyst in aqueous media." Chemistry International 3, no. 3 (2017): 240–43. https://doi.org/10.5281/zenodo.1473124.

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Bis-(4-hydroxycoumarin)methanes derivatives (1-9) were synthesized via one pot condensation reaction of various aromatic aldehyde and 4-hydroxycoumarin using zinc acetate as a catalyst in presence of water as a solvent. This mediated reaction of various aromatic and hetero-aromatic aldehydes using catalytic amounts of zinc acetate avoids the use of expensive, corrosive reagents, toxic solvents and provides operational simplicity.
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Massa, Antonio, Laura Capozzolo, and Arrigo Scettri. "Sulfoxides in the allylation of aldehydes in the presence of silicon tetrachloride and allyltributylstannane." Open Chemistry 8, no. 6 (2010): 1210–15. http://dx.doi.org/10.2478/s11532-010-0099-7.

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AbstractSiCl4 can be conveniently activated by catalytic amounts of dimethyl sulfoxide or other readily-available sulfoxides for the allylation of aromatic, hetero-aromatic and unsaturated aldehydes in the presence of allyltributyl stannane. Chiral aryl methyl sulfoxides have been used to develop asymmetric allylation methods, as well as probe the aldehyde substrate scope.
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Nemec, Vinko, Luka Fotović, Toni Vitasović, and Dominik Cinčić. "Halogen bonding of the aldehyde oxygen atom in cocrystals of aromatic aldehydes and 1,4-diiodotetrafluorobenzene." CrystEngComm 21, no. 21 (2019): 3251–55. http://dx.doi.org/10.1039/c9ce00340a.

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Novel halogen bonded cocrystals of aromatic aldehydes have been synthesized. We present the halogen bond acceptor potential of the aldehyde group oxygen atom in competition with the hydroxy, methoxy and pyridine groups.
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Zhang, Yue Cheng, Jing Yuan Gao, Nai Yue Shi, and Ji Quan Zhao. "Synthesis of Chiral Tridentate Ligands Embodying the Bispidine Framework and their Application in the Enantioselective Addition of Diethylzinc to Aldehydes." Advanced Materials Research 396-398 (November 2011): 1236–43. http://dx.doi.org/10.4028/www.scientific.net/amr.396-398.1236.

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Several new chiral tridentate ligands with the bispidine moiety were synthesized from N-alkyl bispidines and chiral amino (or hydroxyl) acids. The synthesized ligands were used as catalysts in the enantioselective addition of diethylzinc to several aromatic aldehydes and an aliphatic aldehyde. High yield and enantioselectivity were received in the cases of aromatic aldehydes as substrates especially when the employed chiral ligand has a hydroxyl group attached to the chiral center. The effect of the structure, the amount of tridentate chiral ligands, solvent and temperature on the enantioselec
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Seebacher, Werner, Michael Hoffelner, Ferdinand Belaj, et al. "Formation of 5-Aminomethyl-2,3-dihydropyridine-4(1H)-ones from 4-Amino-tetrahydropyridinylidene Salts." Molecules 28, no. 19 (2023): 6869. http://dx.doi.org/10.3390/molecules28196869.

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Various 4-aminotetrahydropyridinylidene salts were treated with aldehydes in an alkaline medium. Their conversion to 5-substituted β-hydroxyketones in a one-step reaction succeeded only with an aliphatic aldehyde. Instead, aromatic aldehydes gave 5-substituted β-aminoketones or a single δ-diketone. The new compounds were characterized using spectroscopic methods and a single crystal structure analysis. Some of them showed anticancer and antibacterial properties.
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Dissertations / Theses on the topic "Aromatic aldehydes"

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Wang, Junkuan. "Synthesis of aromatic aldehydes and the oscillatory behavior of their catalytic autoxidation /." [S.l.] : [s.n.], 1993. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=10371.

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Kjelmand, Luna. "Olfactory sensitivity of spider monkeys (Ateles geoffroyi) for six structurally related aromatic aldehydes." Thesis, Linköping University, Department of Physics, Chemistry and Biology, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-18796.

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<p>For many years, primates have been considered to be animals with a poorly developed sense of smell. However, in recent years several studies have shown that at least some primate species have a high olfactory sensitivity for a variety of odorants. The present study used a two-choice instrumental conditioning paradigm to test the olfactory sensitivity for six aromatic aldehydes in four spider monkeys (Ateles geoffroyi). With helional, cyclamal,canthoxal and lilial all animals discriminated concentrations below 1 ppm from the odorless solvent, with single individuals even scoring better. With
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Larsson, Linda. "Olfactory sensitivity in CD-1 mice for the sperm-attractant odorant bourgeonal and some of its structural analogues." Thesis, Linköping University, Linköping University, Department of Physics, Chemistry and Biology, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-56813.

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<p>Using a conditioning paradigm and an automated olfactometer, I investigated the olfactory sensitivity of five CD-1 mice for seven aromatic aldehydes. With two of the stimuli (3-phenylpropanal and canthoxal), the animals discriminated concentrations as low as 10 ppb (parts per billion) from the odorless solvent and with four of the stimuli (helional, cyclamal, lilial and lyral) they discriminated concentrations as low as 1 ppb, with single individuals even scoring better. All five animals yielded the by far lowest threshold value with bourgeonal and discriminated a concentration of 0.1 ppq (
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Xiao, Wenbo, and 萧文博. "Ruthenium porphyrin catalyzed nitrene insertion into C-H bonds of aromatic heterocycles, aldehydes and alkanes." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2012. http://hub.hku.hk/bib/B50434317.

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Transition metal catalyzed selective nitrene insertion into C-H bonds, which allows direct incorporation of nitrogen functionality into hydrocarbons, represents an appealing methodology for C-N bond formation, a type of bond formation of great importance in organic synthesis due to the prevalence of amino groups in biologically active natural products and pharmaceuticals. Organic azides are atom-economic and an environment-benign nitrene source. This dissertation reports the use of organic azides as a nitrene source to develop a series of protocols for C-H bond functionalization by metal-cata
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Lord, Simon D. "Some studies of the reactions of amines with aldehydes and with aromatic nitro-compounds in acetonitrile." Thesis, Durham University, 1996. http://etheses.dur.ac.uk/5241/.

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Kinetic and equilibrium studies of the reactions between three trinitroaromatic species, 1,3,5-trinitrobenzene, ethyl 2,4,6-trmitrophenyl ether and phenyl 2,4,6- trinitrophenyl ether and the ahphatic amines n-butylamine, pyrrolidine and piperidine, in acetonitrile were undertaken. It was found that the reactions between 1,3,5-trinitrobenzene and each amine were too fast to measure. However kinetic information was gamed from the decomposition of the c-adducts formed from1.3.5- trinitrobenzene and both pyrrolidine and piperidme. Both the 3-adduct and the 1-adduct are observed as intermediates m
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Tayyari, Fariba. "Efficient one-pot reductive alkylations of malononitrile with aromatic aldehydes and one-pot synthesis of new 2-amino-3-cyano-4H-chromenes." Virtual Press, 2008. http://liblink.bsu.edu/uhtbin/catkey/1399195.

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A powerful new one-pot method has been developed for the reductive alkylation of malononitrile with aromatic aldehydes. This new procedure has vastly improved the yield and efficiency and increased the scope for the aromatic aldehydes. Incorporating water as the catalyst in ethanol for the condensation step allows stoichiometric amounts of malononitrile and aldehyde to be employed. After dilution and cooling the reduction step takes place quickly and efficiently with sodium borohydride to give monosubstituted malononitriles.The product from the reductive alkylation of malononitrile with 2-quin
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Pagare, Piyusha P. "RATIONAL DESIGN OF ALLOSTERIC MODULATORS OF HEMOGLOBIN AS DUAL ACTING ANTISICKLING AGENTS." VCU Scholars Compass, 2018. https://scholarscompass.vcu.edu/etd/5451.

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Intracellular polymerization of deoxygenated sickle hemoglobin (Hb S) remains the principal cause of the pathophysiology associated with sickle cell disease (SCD). Naturally occurring and synthetic allosteric effectors of hemoglobin (AEH) have been investigated as potential therapeutic agents for the treatment of SCD. Several aromatic aldehydes, including vanillin, have been studied previously as AEHs for their antisickling activities. Specifically, these compounds form Schiff- base adduct with Hb to stabilize the oxygenated (R) state, increase Hb affinity for O2 and concomitantly prevent the
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Žvaková, Veronika. "Detailní charakterizace pyrolýzního oleje pomocí separačních technik a hmotnostní spektrometrie." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2017. http://www.nusl.cz/ntk/nusl-316220.

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The aim of this work is detailed characterization of pyrolysis oil by advanced analytical separation methods and mass spectrometry. During the pyrolysis process decomposition of complex organic material take place in the presence of high temperatures and the absence of oxygen. Condensable part of vapours and aerosols forms viscous liquid called pyrolysis oil which is a complex mixture of large amount of compounds. In this work samples from microwave pyrolysis of woodchips and sewage sludge from wastewater treatment plant Brno-Modřice were analysed. Samples were provided by Bionic Laboratories
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Auty, Kevin. "Peroxygens in catalysed aromatic side-chain oxidations." Thesis, University of York, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.337658.

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Large, Andrew. "Aromatic alcohol oxidase, aldehyde oxidase and mannitol oxidase in terrestrial gastropods." Thesis, University of Wolverhampton, 1995. http://hdl.handle.net/2436/88293.

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Books on the topic "Aromatic aldehydes"

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Large, Andrew. Aromatic alcohol oxidase,aldehyde oxidase and mannitol oxidase in terrestrial gastropods. University of Wolverhampton, 1995.

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Lai, Weidong George. Probing the stereospecificites of serine proteases using chiral aromatic aldehyde inhibitors and exploring the specificities of subtilisin lentus and its serine mutant. National Library of Canada, 1996.

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Bolden, Michael E. Investigation of the tris(2,2'-bipyridine)ruthenium(III) chemiluminescence reaction for the determination of aromatic amines and aldehydes by flow injection or liquid chromatography. 2001.

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The World Market for Aromatic Ketones, Ketone Alcohols, Aldehydes, Phenols, Quinones, and Their Halogenated, Sulfonated, Nitrated, or Nitrosated Derivatives: A 2004 Global Trade Perspective. Icon Group International, Inc., 2005.

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Parker, Philip M. The 2007 Import and Export Market for Aromatic Ketones, Ketone Alcohols, Aldehydes, Phenols, Quinones, and Their Halogenated, Sulfonated, Nitrated, or Nitrosated Derivatives in China. ICON Group International, Inc., 2006.

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Parker, Philip M. The World Market for Aromatic Ketones, Ketone Alcohols, Aldehydes, Phenols, Quinones, and Their Halogenated, Sulfonated, Nitrated, or Nitrosated Derivatives: A 2007 Global Trade Perspective. ICON Group International, Inc., 2006.

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Parker, Philip M. The 2007 Import and Export Market for Aromatic Ketones, Ketone Alcohols, Aldehydes, Phenols, Quinones, and Their Halogenated, Sulfonated, Nitrated, or Nitrosated Derivatives in India. ICON Group International, Inc., 2006.

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Parker, Philip M. The 2007 Import and Export Market for Aromatic Ketones, Ketone Alcohols, Aldehydes, Phenols, Quinones, and Their Halogenated, Sulfonated, Nitrated, or Nitrosated Derivatives in United States. ICON Group International, Inc., 2006.

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Book chapters on the topic "Aromatic aldehydes"

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Gras, J. L. "Aromatic Aldehydes." In Inorganic Reactions and Methods. John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470145319.ch54.

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Mattei, Patrizio, and François Diederich. "Biomimetic Oxidation of Aromatic Aldehydes Catalyzed by a Bis(Coenzyme)-Cyclophane." In Molecular Recognition and Inclusion. Springer Netherlands, 1998. http://dx.doi.org/10.1007/978-94-011-5288-4_29.

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Fuganti, Claudio, and Piero Grasselli. "Stereochemistry and Synthetic Applications of Products of Fermentation of αβ-Unsaturated Aromatic Aldehydes by Baker's Yeast." In Ciba Foundation Symposium 111 - Enzymes in Organic Synthesis. John Wiley & Sons, Ltd., 2008. http://dx.doi.org/10.1002/9780470720929.ch9.

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Wachter, Nanette M. "Using NMR To Investigate Products of Aldol Reactions: Identifying Aldol Addition versus Condensation Products or Conjugate Addition Products from Crossed Aldol Reactions of Aromatic Aldehydes and Ketones." In ACS Symposium Series. American Chemical Society, 2013. http://dx.doi.org/10.1021/bk-2013-1128.ch007.

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Yamanaka, Kei. "New PQQ-Enzyme: Aromatic Alcohol and Aldehyde Dehydrogenases in Rhodopseudomonas Acidophila M402." In PQQ and Quinoproteins. Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-0957-1_5.

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Sreerama, Lakshmaiah, and Norman E. Sladek. "Overexpression or Polycyclic Aromatic Hydrocarbon-Mediated Induction of an Apparently Novel Class 3 Aldehyde Dehydrogenase in Human Breast Adenocarcinoma Cells and its Relationship to Oxazaphosphorine-Specific Acquired Resistance." In Advances in Experimental Medicine and Biology. Springer US, 1993. http://dx.doi.org/10.1007/978-1-4615-2904-0_12.

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Cicchi, S., and F. M. Cordero. "With Aromatic Aldehydes." In Three Carbon-Heteroatom Bonds: Amides and Derivatives; Peptides; Lactams. Georg Thieme Verlag KG, 2005. http://dx.doi.org/10.1055/sos-sd-022-00319.

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Schall, A., and O. Reiser. "Formylation of Aromatic Compounds with Hexamethylenetetramine." In Aldehydes. Georg Thieme Verlag KG, 2007. http://dx.doi.org/10.1055/sos-sd-025-00457.

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Oestreich, M. "Electrophilic Aromatic Substitution of Unprotected Arenecarbaldehydes." In Aldehydes. Georg Thieme Verlag KG, 2007. http://dx.doi.org/10.1055/sos-sd-025-00471.

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"Aromatic aldehydes, ketones and alcohols." In Aromatic Chemistry, edited by John D. Hepworth, David R. Waring, and Michael J. Waring. Royal Society of Chemistry, 2007. http://dx.doi.org/10.1039/9781847550163-00067.

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Conference papers on the topic "Aromatic aldehydes"

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Soriaga, Manuel P., G. M. Berry, C. Bhardwaj, et al. "Chemisorption of Organic Molecules on Metal Electrode Surfaces." In CORROSION 1990. NACE International, 1990. https://doi.org/10.5006/c1990-90300.

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Abstract The chemisorption of various organic functional groups from aqueous solutions onto smooth single-crystal and polycrystalline electrodes, and the resistance of the resulting monolayer intermediates towards electrochemical oxidation have been studied; these investigations were motivated by the need to understand, at the atomic level, metal passivation by monolayer organic coatings. The electrodes employed were Rh, Pd, Ir, Pt, and Au whose anodic dissolution is preceded by surface-oxide formation even in highly acidic media. Resistance towards anodic oxidation can thus be associated with
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Soares, Liliana A., Helena D. de Salles, and Paulo H. Schneider. "Highly enantioselective arylation of aromatic aldehydes, promoted by chiral phosphinite ligands." In 14th Brazilian Meeting on Organic Synthesis. Editora Edgard Blücher, 2013. http://dx.doi.org/10.5151/chempro-14bmos-r0018-1.

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Grayson, Michael, Greg Krueper, Bo Xu, Dag Hjelme, Juliet T. Gopinath, and Wounjhang Park. "GeSbSe Devices for Mid-Infrared Optical Sensing." In Optical Sensors. Optica Publishing Group, 2022. http://dx.doi.org/10.1364/sensors.2022.sm4e.2.

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We fabricated GeSbSe waveguides and resonators using e-beam lithography and achieved a propagation loss of 4.4 dB/cm in the mid-infrared region. Using these devices we demonstrated optical sensing of aromatic aldehydes with a limit of detection of 0.25 μmol/mL.
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Franconetti, Antonio, Dolores Lara-García, Pedro Dominguez-Rodriguez, and Francisca Cabrera-Escribano. "Structurally Complexes Aromatic Aldehydes on Knoevenagel Condensation Catalyzed by Chitosan Hydrogel Beads." In The 18th International Electronic Conference on Synthetic Organic Chemistry. MDPI, 2014. http://dx.doi.org/10.3390/ecsoc-18-a038.

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Shankar, Varun, and Felix Leach. "Effects of oxygenate and aromatic content on engine-out aldehyde emissions from pure, binary, and ternary mixtures of ethanol, toluene, and iso-octane." In 2023 JSAE/SAE Powertrains, Energy and Lubricants International Meeting. Society of Automotive Engineers of Japan, 2023. http://dx.doi.org/10.4271/2023-32-0029.

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&lt;div class="section abstract"&gt;&lt;div class="htmlview paragraph"&gt;Sustainable fuel components, such as ethanol, can be blended into gasoline to help reduce fossil fuel consumption. Aldehydes are both observed emissions and major intermediates in the oxidation of gasoline/ethanol fuel mixtures and are solely attributed to the fuel’s alcohol content.&lt;/div&gt;&lt;div class="htmlview paragraph"&gt;This study aims to evaluate the direct impact of toluene, iso-octane, and ethanol on engine-out formaldehyde and acetalde hyde emissions. A single-cylinder direct injection spark ignition engi
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Paula, Bruno R. S. de, Dávila S. Zampieri, J. Augusto R. Rodrigues, and Paulo J. S. Moran. "The Knoevenagel condensation between ethyl 4- chloroacetoacetate and aromatic aldehydes in ionic liquids." In 14th Brazilian Meeting on Organic Synthesis. Editora Edgard Blücher, 2013. http://dx.doi.org/10.5151/chempro-14bmos-r0280-1.

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Dotsenko, Victor, Andrey Levashov, Dmitriy Buriy, Valeriy Konshin, Inna Aksenova, and Nikolay Aksenov. "Oppenauer-type synthesis of α, β-acetylenic ketones from tetra(phenylethynyl)tin and aromatic aldehydes." In The 21st International Electronic Conference on Synthetic Organic Chemistry. MDPI, 2017. http://dx.doi.org/10.3390/ecsoc-21-04807.

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Czarnocki, K. J., and E. Czamocka. "398. Aldehydes and Aromatic Hydrocarbons Exposure Risk in the Petrol Cisterns Exploitation Companies in Poland." In AIHce 1998. AIHA, 1999. http://dx.doi.org/10.3320/1.2762804.

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Vinogradov, Andrey, and Vyacheslav Platonov. "Reactions of polyfluoroarylzinc compounds with Vilsmeier-Haack reagent; new synthesis of polyfluorinated aromatic aldehydes and acetales." In The 15th International Electronic Conference on Synthetic Organic Chemistry. MDPI, 2011. http://dx.doi.org/10.3390/ecsoc-15-00607.

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Altaher, Mohamed A., Hu Li, Simon Blakey, and Winson Chung. "NMHC and VOC Speciation of the Exhaust Gas From a Gas Turbine Engine Using Alternative, Renewable and Conventional Jet A-1 Aviation Fuels." In ASME Turbo Expo 2014: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/gt2014-25445.

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This paper investigated the emissions of individual unburned hydrocarbons and carbonyl compounds from the exhaust gas of an APU (Auxiliary Power Unit) gas turbine engine burning various fuels. The engine was a single spool, two stages of turbines and one stage of centrifugal compressor gas turbine engine, and operated at idle and full power respectively. Four alternative aviation fuel blends with Jet A-1 were tested including GTL, hydrogenated renewable jet fuel and fatty acid ester. C2-C4 alkenes, benzene, toluene, xylene, trimethylbenzene, naphthalene, formaldehyde, acetaldehyde and acrolein
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Reports on the topic "Aromatic aldehydes"

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Simon, James E., Uri M. Peiper, Gaines Miles, A. Hetzroni, Amos Mizrach, and Denys J. Charles. Electronic Sensing of Fruit Ripeness Based on Volatile Gas Emissions. United States Department of Agriculture, 1994. http://dx.doi.org/10.32747/1994.7568762.bard.

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An electronic sensory system for the evaluation of headspace volatiles was developed to determine fruit ripeness and quality. Two prototype systems were designed, constructed, and later modified. The first is an improved version of our original prototype electronic sniffer using a single head sensing unit for use as a single or paired unit placed on an individual fruit surface for applications in the field, lab, or industry. The second electronic sniffer utilizes a matrix of gas sensors, each selected for differential sensitivity to a range of volatile compounds. This system is more sophistica
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