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  • synthesis
  • A new method for the synthesis of aromatic sulfurpentafluorides and studies of the stability of the sulfurpentafluoride group in common synthetic transformations" Tetrahedron, 2000, 56:3399-3408. (patentgenius.com)
  • The aromatic nucleophilic substitution reaction based synthesis of a three-armed cryptand displaying 2,4,6-triphenyl-1,3,5-triazine units as caps and pyridine rings in the bridges, along with NMR, MS and molecular modelling-based structural analysis of this compound are reported. (beilstein-journals.org)
  • Cryptands with C 3 -symmetric aromatic reference groups are exciting targets, on the one hand due to the challenges encountered in their synthesis and on the other due to their ability (macrobicyclic effect ) to form supramolecular assemblies with cations, anions or neutral guests, e.g., aromatic molecules [2-. (beilstein-journals.org)
  • The first part of this dissertation deals with employing the use of multi-component coupling reactions (MCC) for the synthesis of large diverse compound libraries. (wits.ac.za)
  • In an attempt to determine whether similar methodology could be used for the synthesis of pyranonaphthoquinone containing compounds an unexpected and novel reaction was discovered. (wits.ac.za)
  • thereof
  • 1. A method of making pentafluorosulfanyl substituted aliphalic or aromatic compounds comprising contacting a solution comprising a solvent, SF5Cl in hexane, and one or more aliphaticor aromatic alkene, alkyne, cyclohexene, or cyclohexadiene compounds with an initiator selected from the group consisting of alkylboranes, irialkylboranes, 9-borabicyclo [3,3.nonane, and mixture thereof to produce a reaction product comprisingpentafluorosulfanyl substituted compound. (patentgenius.com)
  • Methyl
  • This diagram illustrates combination patterns of reaction modules for biodegradation of aromatic compounds, consisting of three main types of ring dihydroxylation modules, followed by meta- or ortho-cleavage modules, together with an optional preprocessing module for converting methyl group to carboxyl group on the aromatic ring. (genome.jp)
  • The octanoic acid from acids, benzaldehyde (CAS) phenylmethanal from aldehydes, 6-methyl-5-hepten-2-one from ketones, octadecane (CAS) n -octadecane form terpenes, ethyl caprylate from esters and benzenemethanol (CAS) benzyl alcohol from alcohols had the highest percentage of volatile aromatic compounds. (springer.com)
  • reactions
  • however, significant opportunities remain to (i) tailor heterogeneous catalyst materials for tandem Diels-Alder and aromatization reactions, and (ii) utilize biomass-derived dienes and dienophiles to access both conventional and novel aromatic monomers. (osti.gov)
  • Heterogeneous catalyst design strategies for Diels-Alder reactions are reviewed for two exemplary solid acid catalysts, zeolites and polyoxometalates, and recent efforts for targeting direct replacement aromatic monomers from biomass are summarized. (osti.gov)
  • strains
  • Development of this flavor and fragrance compound was achieved through the company's innovative fermentation and enzyme technology using natural and wild strains of microbes to ensure the EU Natural status of this ingredient. (perssupport.nl)
  • carbon
  • Furthermore, it is essential that the al-'- kenylcarbonato radicals described above be connected directly to nuclear aromatic carbon atoms in order that the resulting compound be one which is characterized by low shrinkage upon polymerization. (google.com)
  • Six species of free-living nitrogen fixing bacteria, Azomonas agilis, Azospirillum brasilense, Azospirillum lipoferum, Azotobacter chroococcum, Azotobacter vinelandii , and Beijerinckia mobilis , were surveyed for their ability to grow and fix N 2 using aromatic compounds as sole carbon and energy source. (springer.com)
  • composition
  • In a general way, the invention thus concerns the rapid curing of a composition comprising (A) a vinyl aromatic compound in amounts of from 75 to 94%, (B) an elastomeric compound in amounts of from about 5 to 15%, (C) from 1 to about 10% of a cross-linking agent, by means of (D) a polymerization catalyst and (E) a polymerization promoter. (google.es)
  • yields
  • To that end, this work presents further process and host development towards improving MA titers, yields, and productivities, using the hydroxycinnamic acids, p -coumaric acid and ferulic acid, as model aromatic compounds. (rsc.org)
  • invention relates
  • United States Patent Ofiice 3,018,266 Patented Jan. 23, 1962 The present invention relates to elastomer modified vinyl aromatic compositions which are particularly suitable for casting and low pressure laminating applications. (google.es)
  • This invention relates to new chemical compounds, and pertains more specifically to certain. (google.com)
  • concentrations
  • There have been many studies on the use of fluorescence measurements to monitor the concentrations of aromatic compounds. (umd.edu)
  • Overall, waters with low tertiary amine and bromide concentrations can potentially enhance THM and HAA formation when aromatic functional groups with low free chlorine reactivity are chlorinated. (rsc.org)
  • strain
  • Coupling strain engineering and bioprocess development enabled the discovery of new bottlenecks in P. putida that hinder MA production from these compounds. (rsc.org)
  • extracts
  • Specific activity of nitrogenase in extracts of aromatic-grown cells often exceeded that in cells grown on non-aromatic substrates. (springer.com)
  • Blue California is a recognized industry leader in innovation and manufacture of high purity natural compounds and botanical extracts for the food, beverage, cosmetics and flavor industries. (perssupport.nl)
  • Identification
  • Takemoto H, Ito M, Shiraki T, Yagura T, Honda G (2008) Sedative effects of vapor inhalation of agarwood oil and spikenard extract and identification of their active compounds. (springer.com)
  • Bi E, Schmidt TC, Haderlein SB (2006) Sorption of heterocyclic organic compounds to reference soils: column studies for process identification. (springer.com)
  • Chemicals
  • Microorganisms are known to be capable of degrading diverse chemical substances including man-made chemicals in the environment that are mostly aromatic compounds. (genome.jp)
  • measurements
  • Time resolved measurements of aromatic compounds together with other exhaust gases can be done. (sae.org)
  • It is shown, that time resolved quantitative measurements give information on the influence of special driving conditions (warm up, congestion) on the amount of aromatic compounds emitted by automobile exhausts. (sae.org)
  • polymerization
  • In general, the present invention is directed to a promoter system for the polymerization of a mixture comprising (A) at least 75% of a vinyl aromatic compound, (B) at least 5% of an elastomer and (C) at least 1% of a cross-linking agent. (google.es)
  • In many cases, however, the presence of one or more halogen atoms in the aromatic ring is desirable, since it facilitates the polymerization of the compound. (google.com)
  • isolate
  • In some of the experiments we were able to isolate mostly small quantities of indolizine compound, but when tested against the RT enzyme the results once again were very poor. (wits.ac.za)
  • high
  • A hot water extract of agarwood remaining in the distillation flask after distillation was analyzed by high-performance liquid chromatography (HPLC), and agarotetrol was found to be the main compound. (springer.com)
  • model
  • This model is needed to correlate the measured signals to the concentration of fluorescent compounds. (umd.edu)
  • various
  • This study explored how tertiary amines can enhance trihalomethane (THM) and haloacetic acid (HAA) formation when various aromatic compounds (salicylic acid (SA), phenol (PHE) and resorcinol (RES)) and Suwannee River fulvic acid (SRFA) are chlorinated. (rsc.org)
  • The supramolecular architectures involving cryptands (including metallomacrocycles) and aromatic guests are targeted for investigations of aromatic-aromatic contacts [7,and for various applications in molecular electronics [9,. (beilstein-journals.org)
  • presence
  • Long chain alkyl aromatic compounds are prepared by alkylating an alkylatable aromatic compound with a long chain alkylating agent in the presence of catalyst comprising a synthetic porous crystalline material characterized by an X-ray diffraction pattern including interplanar d-spacings at 12.36±0.4, 11.03±0.2, 8.83±0.14, 6.18±0.12, 6.00±0.10, 4.06±0.07, 3.91±0.07 and 3.42±0.06 Angstroms. (google.com)
  • In this work, SOA filter samples were collected during individual chamber experiments with three biogenic and eight aromatic volatile organic compound (VOC) precursors in the presence of NOX and H2O2. (epa.gov)
  • the aromatic SOA generated in the presence of NOX showed stronger light absorption than that generated with H2O2. (epa.gov)
  • SRFA exhibited no or limited CHCl3 and TCAA enhancement with MES, respectively, likely due to the presence of aromatic functional groups that strongly reacted with free chlorine alone. (rsc.org)
  • combination
  • Such promoters comprise essentially a compound having the basic imino group The use of'such compounds alone or in combination with a copper salt as promoters provide a highly desirable and practical curing cycle. (google.es)
  • Results
  • these compounds, those in which the aromatic nuclei are spaced apart by no more than a single intermediate connecting atom have given excellent results as moldingresins. (google.com)
  • cases
  • The recently reported cage-box is able to complex a plethora of aromatic compounds (e.g., anthracene, pyrene, perylene), while in the cases of several metallo-based cryptands the formation of layered host-guest supramolecular structures (with many guests in the cavity of the host) were reported [12-. (beilstein-journals.org)
  • groups
  • That is these materials are compounds having the general structure R-o-c o- I] Aromatic 0 2 or more two of the above-described alkenyl groups be present in the compound in order that it may be polymerized to a hard, non-thermoplastic material. (google.com)
  • Any additional sub: stituent groups may be presentin the aromatic nuclei in addition to the alkenylcarbonato radicals, although a preferred class of these esters consists of those which contain no substituent groups attached to the aromatic nuclei, in addition to the alkenylcarbonato groups, except hydrocarbon groups. (google.com)