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Triaryl carbenium ion pair mediated electrocatalytic benzylic C-H oxygenation in air
Published 2024Subjects: Get full text
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Three-Component Reactions of 3-Arylidene-3<i>H</i>-Indolium Salts, Isocyanides and Amines
Published 2021-04-01Subjects: Get full text
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Deamination of 1-Aminoalkylphosphonic Acids: Reaction Intermediates and Selectivity
Published 2022-12-01Subjects: Get full text
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Application of ammonia probe-assisted solid-state NMR technique in zeolites and catalysis
Published 2022-02-01Subjects: Get full text
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7-((5-Bromo-1H-indol-3-yl)(4-methoxyphenyl)methyl)-1,3,5-triaza-7-phosphaadamantan-7-ium Tetrafluoroborate
Published 2023-04-01Subjects: Get full text
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CALCULATION OF THERMODYNAMIC AND KINETIC PARAMETERS OF CATALYTIC CRACKING REACTIONS ON LEWIS AND BRØNSTED ACID SITES
Published 2023-07-01“…Further study shows that the activation energy of carbenium ion formation from izohexane and C8–C10 alkanes with normal structure on the Lewis acid site was 257,6 and 279,2…277,9 kJ/mol. …”
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Synthesis of the ABC fragment of pectenotoxin-4
Published 2012“…After successfully developing a model system for the synthesis of the AB anomeric 6,5 spiroketal, which involved the employment of a hydride shift initiated oxo carbenium ion formation followed by intramolecular spiroketalisation, the developed system was then applied to the fully elaborated synthesis of the ABC fragment.…”
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Trading N and O. Part 3: Synthesis of 1,2,3,4-tetrahydroisoquinolines from alpha-hydroxy-beta-amino esters
Published 2016“…Activation of the α-hydroxy group upon treatment with Tf2O and 2,6-di-tert-butyl-4-methylpyridine promotes aziridinium formation, which is then followed by rupture of the C(3)-N bond and Friedel-Crafts alkylation-type cyclisation of an N-benzyl moiety onto the resultant benzylic carbenium ion. The nature of the N-protecting group was varied and it was found that superior yields were obtained for reactions employing two benzylic groups. …”
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Total synthesis of rubriflordilactone A
Published 2015“…Construction of the F ring, followed by attachment of the G ring by an intriguing oxo-carbenium ion addition reaction completed two enantioselective total syntheses of (+)-rubriflordilactone A.…”
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Conversion of low density polyethylene (LDPE) over ZSM-5 zeolite to liquid fuel
Published 2017“…Hence, it is concluded that the catalytic cracking of LDPE is dominated by free radical mechanism, while the influence of carbenium ion is less pronounced due to low acidity of the catalyst. …”
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A Molecular Modeling Study into Brønsted and Lewis Acid Catalyzed Conversion of CBD into Other Cannabinoids
Published 2024-03-01“…BF<sub>3</sub>·Et<sub>2</sub>O catalysis leads to the formation of tertiary carbenium ions in the transition states, which yield Δ<sup>9</sup>-THC and some iso THC. …”
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Site Diversity and Mechanism of Metal‐Exchanged Zeolite Catalyzed Non‐Oxidative Propane Dehydrogenation
Published 2023-05-01“…The reaction mechanism could be both intricately related to and nearly independent of the details of the assumed active structure, as in the two main proposed PDH mechanisms on Ga/H‐ZSM‐5, that is, the carbenium mechanism and the alkyl mechanism. Perspectives on potential approaches to further elucidate the active structure of metal‐exchanged zeolite catalysts and reaction mechanisms are discussed in the final section.…”
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Exploration of reaction mechanisms on the plastic waste polyethylene terephthalate (PET) dissolved in phenol steam reforming reaction to produce hydrogen and valuable liquid fuels
Published 2020“…It was found that during the catalytic reforming of PET, several types of reactions such as dehydrogenation reaction, thermal cracking, steam reforming, water gas shift reaction, carbenium ion reaction, free radical reaction, dihydroxylation reaction, and coke formation occurred.…”
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Increased Light Olefin Production by Sequential Dehydrogenation and Cracking Reactions
Published 2022-11-01“…This could accelerate the formation of carbenium ions, thus promoting the conversion of n-octane to produce light olefins. …”
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Cracking of low density polyethylene dissolved in benzene to liquid fuels using zeolite-based catalysts
Published 2016“…It is suggested that the catalytic cracking of LDPE is dominated by free radical mechanism, while the influence of carbenium ion mechanism is less pronounced due to low acidity of the catalyst. …”
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Hydrogen production from the steam reforming of phenol-pet solution using nickle-palladium supported catalyst
Published 2018“…Based on the product formation in the proposed reaction mechanism, free radical and carbenium ion mechanisms are of high chance to occur. …”
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Thesis