Готові списки джерел за темами / Catalysed rearrangement

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Добірка наукової літератури з теми "Catalysed rearrangement"

Автор: Grafiati

Опубліковано: 10 грудня 2022

Оновлено: 28 січня 2023

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Статті в журналах з теми "Catalysed rearrangement"

Shubina, Tatyana E., and Timothy Clark. "Catalysis of the Quadricyclane to Norbornadiene Rearrangement by SnCl2 and CuSO4." Zeitschrift für Naturforschung B 65, no. 3 (March 1, 2010): 347—r369. http://dx.doi.org/10.1515/znb-2010-0319.

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Ab initio and density-functional theory (DFT) calculations have been used to investigate the model rearrangements of quadricyclane to norbornadiene catalysed by single CuSO4 and SnCl2 molecules. The isolated reactions with the two molecular catalysts proceed via electron-transfer catalysis in which the hydrocarbon is oxidised, in contrast to systems investigated previously in which the substrate was reduced. The even-electron SnCl2-catalysed reaction shows singlet-triplet two-state reactivity. Solvation by a single methanol molecule changes the mechanism of the rearrangement to a classical Lewis acid-base process.

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Kona, Chandrababu Naidu, and Chepuri V. Ramana. "Gold(i)-catalysed [1,3] O→C rearrangement of allenyl ethers." Chem. Commun. 50, no. 17 (2014): 2152–54. http://dx.doi.org/10.1039/c3cc49629e.

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Gold standard: a simple and rapid access to the α-substituted acryl aldehydes has been provided by developing a gold-catalysed [1,3] rearrangement of the allenyl ethers importantly with a record turnover frequency = 4600 h⁻¹ (at 0.05 mol% of the catalyst concentration) in homogeneous gold(i) catalysis.

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Song, Wangze, Yu Zhao, John C. Lynch, Hyunjin Kim, and Weiping Tang. "Divergent de novo synthesis of all eight stereoisomers of 2,3,6-trideoxyhexopyranosides and their oligomers." Chemical Communications 51, no. 98 (2015): 17475–78. http://dx.doi.org/10.1039/c5cc07787g.

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All eight possible stereoisomers of 2,3,6-trideoxyhexopyranosides are prepared systematically from furan derivatives by a sequence of Achmatowicz rearrangement, Pd-catalysed glycosidation, and chiral catalyst-controlled tandem reductions.

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Fanning, Kate, Andrew Jamieson, and Andrew Sutherland. "Palladium(II)-Catalysed Rearrangement Reactions." Current Organic Chemistry 10, no. 9 (June 1, 2006): 1007–20. http://dx.doi.org/10.2174/138527206777435490.

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Srivastava, Vishnu P., Rajesh Patel, Garima, and Lal Dhar S. Yadav. "Cyclopropenium ion catalysed Beckmann rearrangement." Chemical Communications 46, no. 31 (2010): 5808. http://dx.doi.org/10.1039/c0cc00815j.

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Yang, Shen K. "Base-catalysed rearrangement of temazepam." Journal of Pharmaceutical and Biomedical Analysis 12, no. 2 (February 1994): 209–19. http://dx.doi.org/10.1016/0731-7085(94)90032-9.

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Nakamura, Itaru, Mao Owada, Takeru Jo, and Masahiro Terada. "Cationic cobalt-catalyzed [1,3]-rearrangement of N-alkoxycarbonyloxyanilines." Beilstein Journal of Organic Chemistry 14 (July 31, 2018): 1972–79. http://dx.doi.org/10.3762/bjoc.14.172.

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A cationic cobalt catalyst efficiently promoted the reaction of N-alkoxycarbonyloxyanilines at 30 °C, affording the corresponding ortho-aminophenols in good to high yields. As reported previously, our mechanistic studies including oxygen-18 labelling experiments indicate that the rearrangement of the alkoxycarbonyloxy group proceeds in [1,3]-manner. In this article, we discuss the overall picture of the cobalt-catalysed [1,3]-rearrangement reaction including details of the reaction conditions and substrate scope.

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Davies, Paul W., Nicolas Martin, and Neil Spencer. "Isotopic labelling studies for a gold-catalysed skeletal rearrangement of alkynyl aziridines." Beilstein Journal of Organic Chemistry 7 (June 21, 2011): 839–46. http://dx.doi.org/10.3762/bjoc.7.96.

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Isotopic labelling studies were performed to probe a proposed 1,2-aryl shift in the gold-catalysed cycloisomerisation of alkynyl aziridines into 2,4-disubstituted pyrroles. Two isotopomers of the expected skeletal rearrangement product were identified using 13C-labelling and led to a revised mechanism featuring two distinct skeletal rearrangements. The mechanistic proposal has been rationalised against the reaction of a range of 13C- and deuterium-labelled substrates.

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Lee-Ruff, E., and Fred J. Ablenas. "Acid-catalyzed rearrangement of cyclobutanols. A novel rearrangement." Canadian Journal of Chemistry 65, no. 7 (July 1, 1987): 1663–67. http://dx.doi.org/10.1139/v87-278.

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The acid-catalysed dehydration–rearrangement reaction of α-thienyl cyclobutanols 3 and 4 resulted in the formation of tetrahydronaphtho[2,3-b]thiophenes 5a and 6a. The rearrangement to the linearly fused PAH system instead of the expected angularly fused system reflects α-scission of the cyclobutyl ring. A mechanism based on deuterium labelling studies is proposed to account for the product formation.

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Urban, S., and RJ Capon. "Marine Sesquiterpene Quinones and Hydroquinones: Acid-Catalyzed Rearrangements and Stereochemical Investigations." Australian Journal of Chemistry 47, no. 6 (1994): 1023. http://dx.doi.org/10.1071/ch9941023.

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Acid treatment of both ilimaquinone (3) and 5-epi-ilimaquinone (9) yielded the same rearrangement products, (7) and (8), thus defining a common absolute stereochemistry. Likewise, acid- catalysed rearrangement of avarol (10) and arenarol (11) yielded the common product aureol (13), allowing the absolute stereochemistry of arenarol (11) and its related quinone arenarone (12) to be assigned. This latter acid- catalysed rearrangement also yielded an unexpected electrophilic aromatic cyclization product (15), the dimethyl ether (17) of which could be obtained in quantitative yield from acid treatment of avarol dimethyl ether (16).

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Дисертації з теми "Catalysed rearrangement"

Cambridge, James R. A. "Lewis acid catalysed rearrangement of epoxides :a mechanistic study." Thesis, University of Canterbury. Chemistry, 2004. http://hdl.handle.net/10092/5646.

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The Lewis acid catalysed rearrangement of optically active, deuterium labelled styrene oxide derivatives to aldehydes is studied experimentally and the mechanism is further elucidated by ab initio molecular orbital and density functional calculations. The Lewis acid catalysed rearrangement of styrene oxide derivatives is shown to occur via a carbocation intermediate. Opening of the epoxide ring occurs with rotation of the Lewis acid coordinated oxygen either towards or away from the aryl group to form either the cis or trans carbocation. Calculations indicate that conversion between the cis and trans cations will only occur via ring closure back to the epoxide. The selectivity for hydride migration is controlled by the preferred geometry of thc carbocation intemediate, specifically whether the C-O bond prefers to adopt an eclipsed confonnation relative to the adjacent cation substituent or whether the stabilisation of the cation is obtained from hyperconjugation of a terminal hydrogen to the cation centre. Chapter One contains a review of the relevant literature and the results of previous mechanistic studies into the Lewis acid catalysed rearrangement of epoxides are discussed. In Chapter Two, a methodology is developed to measure the relative amounts of hydrogen or deuterium in each position of the aldehyde produced by hydride or deuteride migration in the rearrangement of a styrene oxide derivative. The aldehyde product is reduced to an alcohol and reacted with a chiral acid chloride. The resulting ester can be analysed by III NMR in the presence of Yb(hfC)3 or Eu(hfc)3 chiral shift reagents so that the full stereochemical course of the hydride migration can be determined. Chapter Three describes the BF3.OEt2 and LiC104 catalysed rearrangement of deuterated analogues of optically active p-methylstyrene oxide. It is shown that the rearrangement reaction must proceed at least in part via a carbocation intermediate. The results are analysed by the method of Fujimoto and show that for both the BF3.OEt2 and LiC104 catalysed reactions, the majority of the reaction occurs by epoxide opening with rotation of the Lewis acid coordinated oxygen towards the aromatic group (66% : 34% and 57% : 43% respectively). This is in contrast to previous studies where it was assumed that this reaction pathway would not occur. In the LiC104 catalysed reaction, where epoxide opening occurs with rotation of the oxygen away from the aromatic group, hydride/deuteride migration occurs almost exclusively with inversion of configuration; while in the other reactions hydride migrates to an equal extent with inversion or retention of configuration. In Chapter Four, deuterated fluorohydrin is synthesised from deuterated p-methylstyrene oxide and converted to aldehyde with an excess of BF3.OEh in order to determine whether fluorohydrin is an undetected intermediate in the BF3.OEt2 catalysed rearrangement of p-methyl styrene oxide. It is shown the conversion of fluorohydrin to aldehyde occurs by a nearly concerted mechanism, in contrast to the rearrangement of p-methylstyrene oxide to aldehyde which occurs via a carbocation. The rates of the two reactions are also not compatible and fluorohydrin is shown not to be an intem1ediate in the reaction. Chapter Five describes the LiC104 and BF3.OEt2 catalysed rearrangement of deuterated optically active m-methoxystyrene oxide. The selectivity for hydride migration observed is consistent with the mechanism developed for the rearrangement of p-methylstyrene oxide in chapter 3. More of the reaction goes by epoxide opening with rotation towards the aryl group for the destabilised m-methoxy compared to the p-methyl substituted epoxide. Chapter Six describes a computational investigation into the BF3 and Li+ catalysed rearrangement of various styrene oxide derivatives. Stationary points are calculated on the potential energy surfaces for the reactions and the stationary points are characterised by vibrational frequency calculations. Two confom1ations of carbocation are found on the Li+ catalysed reaction surface. One structure has the C-O bond eclipsed with the adjacent C- aryl bond and both terminal hydrogens equally aligned for migration. The other cation minimum shows one terminal hydrogen already in hyperconjugation with the carbocation p-orbital, making it more likely to migrate. It is also shown that rotation of the oxygen towards and away from the aryl group can be considered separately when analysing the reaction. Chapter Seven describes a computational study into the BF3 catalysed rearrangement of 2,3,3-trimethyl-1-butene oxide. The results are combined with a previous computational and experimental studies and it is shown that the reaction fits with the mechanism developed to explain the results of the rearrangement of styrene oxide derivatives. The synthesis of chiral deuterated, 1-octene oxide and 2,3,3-trimethyl-1-butene oxide and the attempted synthesis of p-methoxystyrene oxide is described in Chapter Eight. Chapter Nine describes an investigation into acetate participation in epoxide rearrangement reactions. In this study epoxide rearranged to ketone and no participation of acetate in a cyclisation reaction was observed. The final chapter details the experimental procedures used in the preceding chapters.

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Nam, Shayne G. C. "The mechanism of Lewis acid catalysed epoxide rearrangement to aldehyde." Thesis, University of Canterbury. Chemistry, 2005. http://hdl.handle.net/10092/6091.

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This thesis describes investigations centred on the mechanistic pathway of the Lewis acid-promoted conversion of epoxides into aldehydes. Such studies were directed to gain new information about this important, fundamental rearrangement which contributes to our knowledge and understanding of how and why chemical reactions occur. The research undertaken involved the use of deuterium labelling studies working with enantio-enriched epoxides. Chapter One reviews previous literature and the results of previous mechanistic studies into the Lewis acid catalysed rearrangements of epoxides. Chapter Two describes the development of new methodology for the measurement of the relative amounts of hydrogen and deuterium in each position of the aldehyde produced by hydride or deuteride migration in the rearrangement of styrene oxide. The method consisted of reduction of the aldehyde to an alcohol and subsequent reaction of the alcohol with a chiral acid chloride in the presence of a chiral shift reagent [Yb(hfc)3 or Eu(hfc)3] to measure the diastereomeric/enantiomeric excess in the aldehyde product mixture. The diastereomeric/enantiomeric excess thus determined, can be correlated back to determine the full stereochemical course of the initial epoxide rearrangement. De-convolution of overlapping peaks by mathematical modelling was sometimes necessary. Chapter Three describes the enantiose1ective synthesis of several undeuterated and deuterated styrene oxides that were then used as substrates to study their BF3.OEt2 and LiClO4 rearrangement to give aldehydes. In Chapter Four the BF3.OEt2 catalysed rearrangement of enantioenriched deuterated analogues of styrene oxide are investigated. Chapter Five describes the difficulties encountered when attempting to rearrange both racemic and optically active styrene oxides with LiClO4 in refluxing benzene. Dr D.Q. McDonald's reactions are reproduced to substantiate the claim that his previously reported results were compromised by traces of acid present in the samples of epoxide starting material. The LiClO4/ether catalysed rearrangement of enantio-enriched deuterated analogues of styrene oxide are investigated in Chapter Six with evidence of some racemisation occurring during the rearrangement process. An overall discussion is presented in Chapter Seven with results of the rearrangements of styrene oxide. The results are interpreted using both the Blackett and Fujimoto models and comparisons are made with previous mechanistic studies. Explanations and final conclusions are drawn with future studies outlined. The experimental details that substantiate the claims made in the previous chapters are included in Chapter Eight.

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Owston, Nathan Ashley. "Novel transition metal-catalysed syntheses of carboxylic acid derivatives." Thesis, University of Bath, 2008. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.512253.

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This thesis describes the chemistry developed during a study of novel transition metalcatalysed reactions for the synthesis of carboxylic acid derivatives. Chapter 2 describes a novel protocol for the synthesis of primary amides from alcohols in one-pot where a metal complex mediates two fundamentally different catalytic processes. An iridium catalyst has been shown to be effective for the selective rearrangement of aldoximes into primary amides. In addition, an iridium-catalysed oxidation of activated alcohols via hydrogen transfer has been developed using an alkene as formal oxidant. These reactions have been combined in a sequential process affording good yields for a range of benzylic alcohols. An improved system for the rearrangement of aldoximes into amides using a new ruthenium catalyst is described in Chapter 3. Through a systematic program of optimisation excellent selectivity was achieved for a wide range of substrates at markedly reduced catalyst loading. Chapter 4 describes the development of a ruthenium-catalysed elimination reaction for the conversion of oxime ethers into nitriles. The application of this reaction to tandem and sequential reactions has been explored, albeit with limited success. Also, a method for the ruthenium-catalysed oxidation of alcohols using an electron-deficient alkene as hydrogen acceptor is described, and its application to a tandem oxidation process with a nitrogen nucleophile demonstrated. As an extension of the concept presented in Chapter 4, tandem oxidation processes with oxygen nucleophiles are the subject of Chapter 5. This strategy has been used for the oxidation of primary alcohols to their corresponding methyl esters in one-pot, with good yields obtained for a range of substrates. The use of water as a nucleophile in such a process has also been examined.

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Lukamto, Daniel Hartoyo. "Applications of hypervalent iodine reagents : from enantioselective copper-catalysed arylation-semipinacol cascade to methionine functionalisation for peptide macrocyclisation." Thesis, University of Cambridge, 2018. https://www.repository.cam.ac.uk/handle/1810/283560.

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The unifying theme of this thesis is the exploitation of the reactivity of aryliodonium salts as electrophile transfer reagents. In the first part of the thesis, diaryliodonium salts are employed as arylation reagents for the enantioselective copper-catalysed arylative semipinacol rearrangement (SPR) of various tertiary allylic alcohols. This cascade reaction is a rare example of asymmetrically activating SPR using carbon electrophiles. Different substrate classes - including dihydropyran, indene and dihydronaphthalene moieties - are converted to enantioenriched beta-aryl spirocyclic ketones in excellent yields and enantioselectivities, and often as a single diastereomer. These are in turn useful functional handles for transformations into other moieties, including further rearrangements via Baeyer-Villiger oxidation. In the second part of this thesis, a two-step process for the macrocyclisation of native peptides via a non-natural linkage is developed. This study exploits previous work conducted in the group on the use of aryliodonium salts as methionine-selective diazoacetate transfer reagents. The functionalised methionine is in turn used for an intramolecular rhodium-catalysed insertion into tryptophan. Eventual translation onto solid-phase enables facile access into various macrocyclic peptides.

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Albers, Lena Verfasser], Thomas [Akademischer Betreuer] [Müller, and Rüdiger [Akademischer Betreuer] Beckhaus. "Mechanistic investigations on Lewis acid-catalysed skeletal rearrangement reactions of polysilanes and germapolysilanes : subtle capture of intermediates / Lena Albers. Betreuer: Thomas Müller ; Rüdiger Beckhaus." Oldenburg : BIS der Universität Oldenburg, 2015. http://d-nb.info/1084187159/34.

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Albers, Lena [Verfasser], Thomas [Akademischer Betreuer] Müller, and Rüdiger [Akademischer Betreuer] Beckhaus. "Mechanistic investigations on Lewis acid-catalysed skeletal rearrangement reactions of polysilanes and germapolysilanes : subtle capture of intermediates / Lena Albers. Betreuer: Thomas Müller ; Rüdiger Beckhaus." Oldenburg : BIS der Universität Oldenburg, 2015. http://d-nb.info/1084187159/34.

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Nomura, Hiroshi. "An Investigation into the Allylic Imidate Rearrangement of Trichloroacetimidates Catalysed by Cobalt Oxazoline Palladacycles. The Use of Chiral Allylic Amides for the synthesis of Mono- and Bicyclic Nitrogen Heterocycles." Thesis, University of East Anglia, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.520457.

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Cadu, Alban. "Noble Metal Catalysed Reductions and Rearrangements." Doctoral thesis, Uppsala universitet, Syntetisk organisk kemi, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-272383.

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The focus of this thesis has been organometallic catalysis applied to compounds containing heteroatoms which are usually poisonous to metal catalysts, by channelling their innate reactivity advantageously. The studies described in this thesis concentrate, in the first part, on iridium catalysed asymmetric hydrogenation (papers I and II) and in the second part, on gold catalysed internal rearrangements (papers III and IV). In each case, two classes of compounds are studied: pyridinium salts or sulphurous compounds. The asymmetric hydrogenation of pyridinium compounds was performed with 2% loading of N,P-ligated Ir catalyst with I2 additive (paper I) to achieve moderate to good enantiomeric excess (up to 98%). In paper II, olefinic sulphones were hydrogenated with an efficient 0.5% catalytic loading. In most cases full conversion was obtained and with good to excellent ees (up to 99%). The products of these reductions are chiral compounds, which could constitute further chemical building blocks. Palladium and gold were used sequentially in paper III, in order to perform a “Click” thiol-yne reaction followed by a semi-Pinacol rearrangement, leading to isolated yields of up to 98%. In paper IV The gold catalysed rearrangement of alkyl-pyridinium diynes was conducted, with a number of substrates providing >90% NMR yield. A highly selective hydrogenation was performed with a heterogeneous palladium catalyst to yield single diastereomer products. This methodology consists of up to three steps, with two catalysts in one pot.

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Kasten, Kevin. "Lewis base-catalysed enantioselective formal cycloadditions and rearrangements." Thesis, University of St Andrews, 2017. http://hdl.handle.net/10023/11365.

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This thesis describes the use of chiral nitrogen-based Lewis base catalysts in transformations such as cycloadditions and rearrangements. Cinchona alkaloids were employed as catalysts within a formal [4+2]-cycloaddition of trifluoromethyl- substituted α,β-unsaturated ketones and allenoates. Either 1,1,1-trifluorobut-3-en-2- ones or 4,4,4-trifluorobut-2-en-1-ones were used to selectively introduce a trifluoromethyl moiety in the 4- or 6-position within a dihydropyran scaffold. The reaction proceed successfully to give a range of dihydropyran products with (hetero)aryl- and alkyl-substituted trifluoromethyl ketones in up to 81% yield and 98% e.e. The dihydropyran products can be derivatised using selective hydrogenation methods to give tetrahydropyrans in high yield and diastereoselectivity without loss of stereointegrity. Furthermore, isothioureas were applied in the [2,3]-sigmatropic rearrangement of 3- fluorocinnamyl substituted quaternary ammonium salts. A broad range of substituents at either the nitrogen or the cinnamyl group has been evaluated showing the generality of this process. Enantioenriched amino acid derivatives containing a tertiary flourinated carbon centre were produced in high yield and good enantio- and diastereoselectivity (up to 76%, 94:6 d.r., 96% e.e.). It was attempted to extend the scope of this reaction to the [2,3]-Sommelet-Hauser rearrangement of benzylic ammonium salts, which proved to be difficult. A range of conditions as well as variety of substituted benzyl substrates were investigated but no rearrangement product could be isolated. The further extension of the scope of the [2,3]-rearrangement using allylic ammonium salts with 3-methylcinnamyl substitution was investigated. Mixtures of enantioenriched products derived from [2,3]- and [1,2]-rearrangement were observed. The fomation of the [1,2]-product led to the further investigation of this rearrangement. Applying ammonium salts bearing bulky 3,3-disubstituted allyl groups a selective [1,2]-rearrangement has been observed. The optimisation of this process is discussed and products were obtained in up to 68% yield and 58% e.e. This represents the first catalytic enantioselective [1,2]-rearrangement of ammonium salts.

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Renny, Joseph S. "The Newman-Kwart Rearrangement : Molecularity and Catalysis." Thesis, University of Bristol, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.525440.

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Книги з теми "Catalysed rearrangement"

Laks, Peter Edward. Condensed tannins: Base-catalysed reactions of polymeric procyanidins with phloroglucinol : intramolecular rearrangements / Peter E. Laks and Richard W. Hemingway, Anthony H. Conner. [Madison, Wis.?: Forest Products Laboratory, 1988.

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Laks, Peter E. Condensed tannins: Base-catalysed reactions of polymeric procyanidins with phloroglucinol : intramolecular rearrangements / Peter E. Laks and Richard W. Hemingway, Anthony H. Conner. [Madison, Wis.?: Forest Products Laboratory, 1988.

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Auburn, Pamela Rae. Catalyzed molecular rearrangements. 1986.

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Lee, Ernest Edward. Palladium(II) catalyzed formal [3,3]-sigmatropic rearrangement of (Allyloxy) iminodiazaphospholidines. 2006.

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Wempe, Michael F. The experimental and theoretical study of the acid catalyzed transannular rearrangement of 5-cyclodecynone to Bicyclo[4.4.0]-1(6)-decen-2-one. 1996.

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Частини книг з теми "Catalysed rearrangement"

Ferreira, Daneel, Jan P. Steynberg, Johann F. W. Burger, and Desmond A. Young. "Base-Catalyzed Pyran Rearrangements of Profisetinidins." In Chemistry and Significance of Condensed Tannins, 285–98. Boston, MA: Springer US, 1989. http://dx.doi.org/10.1007/978-1-4684-7511-1_17.

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Osanai, S. "Nickel(II)-Catalyzed Rearrangements of Free Sugars." In Topics in Current Chemistry, 43–76. Berlin, Heidelberg: Springer Berlin Heidelberg, 2001. http://dx.doi.org/10.1007/3-540-44422-x_4.

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Cadierno, Victorio, Joaquín García-Álvarez, and Sergio E. García-Garrido. "Catalytic Rearrangements and Allylation Reactions in Water." In Metal-Catalyzed Reactions in Water, 243–89. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2013. http://dx.doi.org/10.1002/9783527656790.ch7.

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Zhang, Jianbo, Chuanhe Yu, Lakshminarasimhan Krishnaswamy, and Thomas Peterson. "Transposable Elements as Catalysts for Chromosome Rearrangements." In Methods in Molecular Biology, 315–26. Totowa, NJ: Humana Press, 2010. http://dx.doi.org/10.1007/978-1-61737-957-4_18.

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Quirós, María Teresa, and María Paz Muñoz. "Synthesis of Heterocyclic Compounds via Gold-Catalysed Enyne Rearrangements." In Topics in Heterocyclic Chemistry, 117–74. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/7081_2015_5004.

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Peden, C. H. F., and D. W. Goodman. "Hydrocarbon Synthesis and Rearrangement over Clean and Chemically Modified Surfaces." In Catalyst Characterization Science, 185–98. Washington, DC: American Chemical Society, 1985. http://dx.doi.org/10.1021/bk-1985-0288.ch017.

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Johnson, Brian F. G., Adrian Bott, Robert E. Benfield, Dario Braga, Elisabeth A. Marseglia, and Alison Rodger. "Mechanistic Features of Carbonyl Cluster Rearrangement." In Metal-Metal Bonds and Clusters in Chemistry and Catalysis, 141–60. Boston, MA: Springer US, 1990. http://dx.doi.org/10.1007/978-1-4899-2492-6_11.

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Sahoo, Basudev. "Visible Light Photoredox Catalyzed Trifluoromethylation-Ring Expansion via Semipinacol Rearrangement." In Visible Light Photocatalyzed Redox-Neutral Organic Reactions and Synthesis of Novel Metal-Organic Frameworks, 59–80. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-48350-4_3.

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Stamm, Th, H. W. Kouwenhoven, and R. Prins. "Zeolite Catalysed Rearrangement of Aromatic Amines." In Studies in Surface Science and Catalysis, 543–50. Elsevier, 1993. http://dx.doi.org/10.1016/s0167-2991(08)63364-9.

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Elings, J. A., H. E. B. Lempers, and R. A. Sheldon. "Zeolite-catalysed rearrangement of isophorone oxide." In Studies in Surface Science and Catalysis, 1165–72. Elsevier, 1997. http://dx.doi.org/10.1016/s0167-2991(97)80753-7.

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Тези доповідей конференцій з теми "Catalysed rearrangement"

Sooriyakumaran, Ratnam, Hiroshi Ito, and Eugene A. Mash. "Acid-catalyzed pinacol rearrangement: chemically amplified reverse polarity change." In Advances in Resist Technology and Processing VIII, edited by Hiroshi Ito. SPIE, 1991. http://dx.doi.org/10.1117/12.46390.

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Uchino, Shou-ichi, Takao Iwayanagi, Takumi Ueno, and Nobuaki Hayashi. "Negative resist systems using acid-catalyzed pinacol rearrangement reaction in a phenolic resin matrix." In Advances in Resist Technology and Processing VIII, edited by Hiroshi Ito. SPIE, 1991. http://dx.doi.org/10.1117/12.46391.

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Sukharev, A. E. "CARBON-LIKE UNITS FOR A NANOSIZED TOOL BASED ON THE USE OF BORON NITRIDE AND DIAMOND." In Проблемы минералогии, петрографии и металлогении. Научные чтения памяти П. Н. Чирвинского. Пермский государственный национальный исследовательский университет, 2021. http://dx.doi.org/10.17072/chirvinsky.2021.244.

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Анотація:

Phase transformations of pyrolytic boron nitride were studied under thermobaric conditions, providing direct transformation of a hexagonal structure into a cubic one. If only the martensitic mechanism of the cooperative rearrangement of atoms is realized, diamond-like aggregates with an equiaxed highly dispersed structure and submicron grain sizes are formed. The presence of a solvent-catalyst (RC) in the system leads to an increase in the particle size of the cubic phase due to recrystallization by the diffusion mechanism, and the high catalytic activity of RC causes the appearance of zones of directional crystal growth in the synthesized samples.

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Звіти організацій з теми "Catalysed rearrangement"

Wang, Paul. Alumina-catalyzed Cope rearrangement. Portland State University Library, January 2000. http://dx.doi.org/10.15760/etd.2402.

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Jacob, Josemon. Atom transfer and rearrangement reactions catalyzed by methyltrioxorhenium, MTO. Office of Scientific and Technical Information (OSTI), May 1999. http://dx.doi.org/10.2172/354892.

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