Academic literature on the topic 'Carboxylic acids. Diels-Alder reaction'

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Journal articles on the topic "Carboxylic acids. Diels-Alder reaction"

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Bräse, Stefan, Anne Friedrich, Manuel Jainta, and Carl Nising. "Synthesis of Hexahydroindole Carboxylic Acids by Intramolecular Diels-Alder Reaction." Synlett 2008, no. 04 (February 12, 2008): 589–91. http://dx.doi.org/10.1055/s-2008-1032085.

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Parvez, M., A. Rauk, T. S. Sorensen, and F. Sun. "Structure reassignment of the major isomer from the Diels-Alder reaction of acryloyl chloride and 4,5,6,6a-tetrahydropentalene." Canadian Journal of Chemistry 76, no. 9 (September 1, 1998): 1289–93. http://dx.doi.org/10.1139/v98-168.

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After hydrogenation and hydrolysis, the two adducts formed from the Diels-Alder reaction of acryloyl chloride and 4,5,6,6a-tetrahydropentalene were originally assigned 7-exo- and 7-endo-carboxylic acid structures 3 and 4. Based on unexpected results in using these acids as starting materials for a superacid carbocation study, a reinvestigation of these structural assignments was carried out. From an extensive series of 2D NMR experiments, we conclude that 4 is correctly assigned, but that the other isomer is the 9-endo carboxylic acid 8. The formation of these two isomers (out of eight possible modes of addition) can be rationalized. Finally, an X-ray study of 8 was carried out as a final proof of structure.Key words: Diels-Alder reaction, facial selectivity, regioselectivity, X-ray structure, MO calculation.
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Pettigrew, Jeremy D., Rebecca P. Freeman, and Peter D. Wilson. "Total synthesis of (–)-xyloketal D and its enantiomer — Confirmation of absolute stereochemistry." Canadian Journal of Chemistry 82, no. 11 (November 1, 2004): 1640–48. http://dx.doi.org/10.1139/v04-138.

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The total synthesis of (–)-xyloketal D and its enantiomer have been achieved by the reaction of an ortho-quinone methide with (4R)- and (4S)-4,5-dihydro-2,4-dimethylfuran via a diastereoselective inverse electron demand Diels–Alder reaction. This total synthesis confirmed the absolute stereochemistry of the natural product. The ortho-quinone methide was generated by reaction of an appropriately functionalized Mannich base with methyl iodide. The Mannich base was prepared in one step from 2,4-dihydroxyacetophenone, formaldehyde, and morpholine. The enantiomeric dihydrofurans were prepared from (2R)- and (2S)-2-methylpent-4-ynoic acid via a three-step reaction sequence. These chiral nonracemic synthetic precursors were prepared from the corresponding (R)-phenylglycinol-derived diastereomeric amides of the readily available racemic carboxylic acid. The absolute stereochemistry of these carboxylic acids was firmly established by conversion to a known compound that had been previously prepared from a chiral pool starting material.Key words: xyloketal D, inverse electron demand Diels–Alder reaction, ortho-quinone methide, dihydrofuran.
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Ueda, Yasutsugu, and Viviane Vinet. "Synthesis and in vitro activity of several new carbapenems." Canadian Journal of Chemistry 64, no. 11 (November 1, 1986): 2184–91. http://dx.doi.org/10.1139/v86-359.

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The synthesis and in vitro activity of several new carbapenems, 2-(3-cis-substituted cyclopentylthio)- and 2-(4-cis-substituted cyclohexylthio)-(6S)-[(1′R)-hydroxyethyl]-(5R)-carbapen-2-em-3-carboxylic acids 7 and 8, are described. The synthesis involves the stereospecific preparation of cis-substituted cyclopentyl- and cyclohexylthiols 2 and 3 by the hetero Diels–Alder reaction followed by some chemical manipulations.
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Cativiela, Carlos, Pilar López, and José A. Mayoral. "Asymmetric synthesis of 2-aminonorbornane-2-carboxylic acids by Diels-Alder reaction." Tetrahedron: Asymmetry 2, no. 12 (January 1991): 1295–304. http://dx.doi.org/10.1016/s0957-4166(00)80027-0.

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Cativiela, Carlos, Pilar López, and José A. Mayoral. "Asymmetric synthesis of 2-aminonorbornane-2-carboxylic acids by Diels-Alder reaction." Tetrahedron: Asymmetry 1, no. 2 (January 1990): 61–64. http://dx.doi.org/10.1016/s0957-4166(00)86334-x.

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Obushak, Mykola D., Fedor I. Zubkov, Maryana A. Nadirova, Yevhen-Oleh V. Laba, Vladimir P. Zaytsev, Julya S. Sokolova, Kuzma M. Pokazeev, et al. "Application of the Intramolecular Diels–Alder Vinylarenе (IMDAV) Approach for the Synthesis of Thieno[2,3-f]isoindoles." Synthesis 52, no. 15 (March 12, 2020): 2196–223. http://dx.doi.org/10.1055/s-0039-1690833.

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3-(Thien-2-yl)- and 3-(thien-3-yl)allylamines, readily accessible from the corresponding thienyl aldehydes, can interact with a broad range of anhydrides and α,β-unsaturated acids chlorides (maleic, сitraconic­, and phenyl maleic anhydrides, сrotonyl and сinnamyl chlorides, etc.) leading to the formation of a thieno[2,3-f]isoindole core. Usually, the reaction sequence involves three successive steps: acylation of the nitrogen atom of the initial allylamine, the intramolecular Diels–Alder vinylarenе (IMDAV) reaction, and the final aromatization of the dihydrothiophene ring in the Diels–Alder adducts. The scope and limitations of the proposed method were thoroughly investigated. It was revealed with the aid of X-ray analysis that the key step, the IMDAV reaction, proceeds through an exo-transition state, giving rise to the exclusive formation of a single diastereomer of the target heterocycle. In the case of maleic anhydrides, the method allows to obtain functionally substituted thieno[2,3-f]isoindole carboxylic acids, which are potentially useful substrates for further transformations and subsequent bioscreening.
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Yates, Peter, and Tadas S. Macas. "Tandem Wessely oxidation and intramolecular Diels–Alder reactions. III. Synthesis of isotwistanes." Canadian Journal of Chemistry 66, no. 1 (January 1, 1988): 1–10. http://dx.doi.org/10.1139/v88-001.

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Wessely oxidation of o-(3-alkenyl) phenols (5) with lead tetraacetate gives 6-acetoxy-6-(3-alkenyl)-2,4-cyclohexadien-1-ones (6), which undergo intramolecular Diels–Alder reactions to give isotwistene (hexahydro-1,5-methanoindene) derivatives (7). These, on hydrolysis followed by oxidation with periodic acid, give hexahydro-1-oxo-1H-indene-5-carboxylic acids (41, 46). Compounds 5 were prepared either by Grignard coupling of o-methoxybenzyl chloride with allyl halides followed by de-O-methylation with sodium thioethoxide or via reduction of dihydrocoumarins (18–20) to 2-chromanols (21–23) with diisobutylaluminum hydride, followed by Wittig reaction of these with ethyl (triphenylphosphoranylidene)acetate.
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Gill, Melvyn, Peter M. Morgan, Jin Yu, and Jonathan M. White. "Pigments of Fungi. XLVII. Cardinalic Acid, a New Anthraquinone Carboxylic Acid from the New Zealand Toadstool Dermocybe cardinalis and the Synthesis and X-Ray Crystal Structure of Methyl 1,7,8-Tri-O-methylcardinalate." Australian Journal of Chemistry 51, no. 3 (1998): 213. http://dx.doi.org/10.1071/c97154.

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Cardinalic acid (1,7,8-trihydroxy-6-methoxy-3-methyl-9,10-dioxoanthracene-2-carboxylic acid) (4) and the known anthraquinone carboxylic acids endocrocin (1), dermolutein (2) and cinnalutein (3) have been isolated from the New Zealand toadstool Dermocybe cardinalis. Methyl 1,7,8-tri-O-methylcardinalate (5) has been prepared both by permethylation of the natural product (4) and from 2,6-dichloro-1,4-benzoquinone by two consecutive regioselective Diels–Alder cycloaddition reactions. A single-crystal X-ray structure analysis of the ester (5) corroborates the structure of the natural product (4) and confirms the outcome of both cycloaddition reactions.
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CATIVIELA, C., P. LOPEZ, and J. A. MAYORAL. "ChemInform Abstract: Asymmetric Synthesis of 2-Aminonorbornane-2-carboxylic Acids by Diels- Alder Reaction." ChemInform 23, no. 15 (August 22, 2010): no. http://dx.doi.org/10.1002/chin.199215282.

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Dissertations / Theses on the topic "Carboxylic acids. Diels-Alder reaction"

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Bollans, Lee. "The acylnitroso diels-alder reaction : Application to Amino Acids and their glycoconjugates." Thesis, University of Liverpool, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.511092.

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Valenzuela, Marcela Victoria. "Dirhodium(ii) carboxamidate catalysts as Lewis acids for the hetero-Diels-Alder reaction." College Park, Md. : University of Maryland, 2004. http://hdl.handle.net/1903/2156.

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Thesis (Ph. D.)--University of Maryland, College Park, 2004.
Thesis research directed by: Chemistry. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.
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Crossman, Julia Stephanie, and julia crossman@flinders edu au. "Biomimetic Approaches to the Synthesis of Polyketide Derived Marine Natural Products; (-)-Maurenone and the Spiculoic Acids." Flinders University. SoCPES, 2007. http://catalogue.flinders.edu.au./local/adt/public/adt-SFU20080212.134949.

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This thesis describes the total synthesis of the polyketide derived marine natural product (-)-maurenone (14) and synthetic studies of a model system for the marine polyketides, the spiculoic acids (20, 22-24). A biomimetic approach involving cyclisation of linear polyketide precursors to install the complex chemical frameworks was employed. Maurenone is a polypropionate derived metabolite isolated from pulmonate molluscs collected off the coast of Costa Rica. While structural assignment following isolation revealed a relatively uncommon tetra-substituted dihydropyrone moiety the only stereochemical information deduced was the trans-relative relationship between the C8 and C9 protons. The total synthesis of a series of eight stereoisomeric putative structures was achieved in order to assign the stereochemistry of (-)-maurenone (14), as that depicted above. A time and cost efficient strategy was developed utilising common intermediates providing access to the eight stereoisomeric structures in a convergent manner. Six key fragments, four aldehydes (109) and two ketones (110), were synthesised using highly diastereoselective syn- and anti-boron aldol reactions and were coupled using a lithium-mediated aldol reaction. Trifluoroacetic acid-promoted cyclisation/dehydration enabled installation the ƒ×-dihydropyrone ring. All eight isomers of one enantiomeric series were synthesised by coupling two ketones with each of four aldehydes. By comparison of the NMR data for the eight isomers with that reported for the natural product, the relative stereochemistry was established as shown. The (-)-enantiomer of maurenone was synthesised in nine linear steps (13 % overall yield) from (R)-2-benzylpentan-3-one ((R)-40) and (R)-2-benzoyloxypentan-3-one ((R)-39). The spiculoic acid family of polyketide derived natural products, isolated from plakortis sponges, possess a unique [4.3.0]-bicyclic core which is proposed to be formed via an enzyme catalysed Intramolecular Diels-Alder (IMDA) cycloaddition reaction of linear polyene precursors 25. Model linear precursors (114), possessing various olefin geometries at C2 and both stereochemical orientations of the C5 stereocentre, were synthesised in order to examine stereoselectivity of the thermally induced IMDA cycloaddition reaction. The two alternative C4-C6 stereotriads of the linear precursors 114 were achieved by employing highly diastereoselective substrate-controlled aldol reactions; an anti-boron aldol reaction, controlled by the facial preference of (R)-2-benzoyloxypentan-3-one ((R)-39), and a syn-titanium aldol reaction, under the control of chiral N-acylthiazolidinethione ((R)-43a). The diene and dienophile moieties were installed using either standard Wittig, H.W.E. or ¡§modified¡¨ Julia olefination reactions. A thorough stereochemical assignment of the cycloadducts of the thermally induced IMDA reaction of each linear precursor was accomplished employing 2D NMR techniques. Comparison of the stereochemistry of each of the cycloadducts with the spiculoic acids revealed that the linear precursor (2E,5S)-114 produced a cycloadduct 232 with stereochemistry analogous to the natural products in 94 % diastereoselectivity. Thus, a synthetic approach to the spiculoic acids via synthesis of a linear precursor 285 possessing a TBS ether at C5 in the S configuration was proposed. Unfortunately, problems encountered in the synthesis of the proposed linear precursors to the spiculoic acids ultimately prevented the total synthesis from being achieved.
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Csatary, Erika Elizabeth. "Asymmetric Multicomponent Aza-Diels-Alder Reaction for Construction of Multicyclic Heterocycles and Development of XZH-5 Derivatives as Inhibitors of Signal Transducer and Activator of Transcription 3 (STAT3)." Miami University / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=miami1435110305.

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Liang, Tao. "Chiral Phosphoric Acids and Alkaline Earth Metal Phosphates Chemistry." Thesis, University of South Florida, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=3632228.

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Asymmetric synthesis and catalysis is one of the leading research areas in chemistry society, for its versatility and efficiency in obtaining chiral molecules that found the vast majority in natural active compounds and synthetic drugs. Developing asymmetric catalytic methodology is at the frontier in both industrial and academic research laboratories. Enantioselective organocatalysis has emerged as a powerful synthetic tool that is complementary to metal-catalyzed transformations. The development of chiral phosphoric acid and metal phosphate as catalysts has been a breakthrough in recent years. Chiral phosphoric acids have been shown to be powerful catalysts in many organic transformations. Moreover, chiral metal phosphates, which formed by simply replacing the proton in phosphoric acid with metals, have introduced new catalytic activations and broaden the scope of phosphoric acids. This thesis details new highly enantioselective chiral phosphoric acid-catalyzed Pinacol rearrangement and robust alkaline phosphates catalytic system, which utilizes novel carbonyl activation.

The Pinacol rearrangement has long been known to be difficult to control in terms of regioselectivity and stereoselectivity. The initial studies found that indolyl-diol compounds can be treated with chiral phosphoric acids to afford the Pinacol rearrangement with high regio- and enantioselectivity. Over 16 chiral phosphoric acids were screened, and it was found an H8-BINOL-phosphoric acid variant with 1-naphthyl groups at 3 and 3' position was the excellent catalyst. This asymmetric transformation is tolerant toward variety of substituents both on the indole ring and migrating groups.

During the study, it was found that different ways to generate the catalyst had critical effect on this catalytic transformation. Only those phosphoric acids washed with HCl after column chromatography afforded the rearrangement products with high enantioselectivity. And those without treating with HCl were found contaminated by alkaline metals. These "contamination" catalysts were also found active with carbonyl activations.

A highly enantioselective catalytic hetero-Diels-Alder reaction of alpha-keto esters has been developed with chiral alkaline metal phosphates. A calcium 1-naphthyl-BINOL phosphate was found to be the optimum catalyst. A large range of alpha-keto esters as well as isatins can be applied in this alkaline phosphates catalytic system with high efficiency and selectivity. The structure of the catalyst is detailed for the first time by X-ray crystal structure analysis. A proposed Transition state model is provided based on the catalyst crystal structure and Raman spectroscopy analysis.

This methodology was further developed with an asymmetric Mukaiyama-Michael addition of beta,gamma-unsaturated alpha-keto ester. The best catalyst was found to be a magnesium chiral phosphate. And the transformation was found capable of tolerating a wide variety of beta,gamma-unsaturated alpha-keto esters.

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Karpus, Andrii. "Calix[4]arènes chiraux contenant des groupes phosphine comme ligands pour la catalyse." Thesis, Toulouse 3, 2017. http://www.theses.fr/2017TOU30045/document.

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La thèse est consacrée à la développement de méthodes efficaces pour la synthèse d'une nouvelle classe d'intrinsèquement chiral calix[4]arènes contenant du phosphore, phosphines et acides phosphoriques avec une certaine disposition mutuelle des groupes fonctionnels sur le bord inférieur du macrocycle, avec un potentiel activité catalytique. La façon optimale fot la synthèse de calix[4]arènes contenant du phosphore par la substitution progressive des hydroxyles phénoliques a été développé afin de concevoir des intrinsèquement chiral calix[4]arènes avec des types de remplacement ABHH et ABCH au bord inférieur du macrocycle. En utilisant ces techniques, la synthèse de la six catalyseurs et efficaces avec chiralité planaire a été réalisée. En utilisant des études de diffraction des rayons X a permis d'étudier la localisation spatiale des groupes fonctionnels. L'utilisation de la réaction de Mitsunobu autorisé à fournir une synthèse de la nouvelle "poche" -comme ligands - calix[4]arènes portant des fragments ferrocényle-phosphines chirales. L'efficacité des nouveaux ligands phosphine synthétisés a été confirmé par l'exemple du modèle de réaction Tsuji-Trost. intéressante dépendance du niveau de sélectivité de la taille du cation de métal de base ajoutée, en raison de l'effet de ligand de chélation du supramoléculaire a été observée. Calix[4]arènes acides phosphoriques a d'abord été appliqués comme organocatalyseurs la série de réactions modèles: aza-Diels-Alder, aza-Mukayiama réaction asymétrique et réaction d'ouverture d'époxydes anneau. Il a été constaté que la plupart des composés synthétisés présentent un degré notable de activitydue catalytique à des caractéristiques de chiralité interne
The thesis is devoted to the developing of effective methods for the synthesis of new class of inherently chiral phosphorus-containing calix[4]arenes, phosphines and phosphoric acids with a certain mutual arrangement of functional groups on the lower rim of the macrocycle, with potential catalytic activity. The optimal way fot the synthesis of phosphorus-containing calix[4]arenes by the stepwise substitution of the phenolic hydroxyls was developed in order to design inherently chiral calix[4]arenes with ABHH and ABCH replacement types at the lower rim of the macrocycle. By using these techniques, synthesis of six analogues of known and effective catalysts with planar chirality was performed. Using X-ray diffraction studies allowed to investigate spatial location of functional groups. Using of Mitsunobu reaction allowed to provide synthesis of the new "pocket"-like ligands - calix[4]arenes bearing chiral ferrocenyl-phosphines moieties. The effectiveness of the synthesized new phosphine ligands was confirmed by the example of the model Tsuji-Trost reaction. Interesting dependence of the selectivity level on the metal cation size of added base, due to chelation effect of supramolecular ligand was observed. Calix[4]arenes phosphoric acids was first applied as organocatalysts the series of model reactions: aza-Diels-Alder reaction, aza-Mukaiyama asymmetric reaction and epoxides ring opening reaction. It was found that most of the synthesized compounds exhibit a noticeable level of catalytic activitydue to features of internal chirality
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Clouston, Laurel L. "The design and synthesis of C₃ symmetric ligands for lanthanide Lewis acid catalysis of the inverse demand hetero Diels-Alder reaction." Thesis, 1998. https://dspace.library.uvic.ca//handle/1828/8721.

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The inverse demand hetero Diels-Alder reaction has been shown to be catalysed by commercially available, air-sensitive lanthanide Lewis acid catalysts such as Yb(fod)₃ . To date there have been no reported examples of enantioselective Lewis acid catalysed reactions of ethyl vinyl ether with crotonaldehyde, the inverse demand hetero Diels-Alder reaction of interest. This Diels-Alder reaction yields dihydropyran products which are key in the synthesis of a number of natural product target molecules, such as carbohydrates. The lack of stereospecificity achieved with known chiral NMR shift reagents has been attributed to fluxional behaviour of the ligands on the large lanthanide metal centre. This lack of conformational rigidity was proposed to be controlled by the use of sterically demanding C₃ symmetric multidentate ligand systems. By carefully designing a suitable ligand system the binding of the crotonaldehyde moiety in the Lewis acid catalysed reaction was anticipated to occur with facial selectivity, resulting in enantioselective Diels-Alder products. It was determined that lanthanide complexes of fluorinated β-diketone ligands with sufficiently low pKa's effectively catalyse the desired inverse demand hetero Diels-Alder reaction. These functionalities were incorporated into a multidentate, achiral, C₃ symmetric ligand system which upon lanthanide complexation was shown to be an air-stable efficient Lewis acid catalyst. Two chiral C₃ symmetric ligand systems were also prepared but were shown to be unsuitable for lanthanide substitution due to insufficiently robust functionalities present in the ligand framework, such as sulfonyl esters and Molecular modelling studies of these ligand systems reveal that the incorporation of camphor into the ligand framework is ideal for the preparation of a facially selective aldehyde binding site. Thus, concluding work probed other possible ligand functionalities which would result in camphor containing, chiral, C₃ symmetric ligand systems that are stable as lanthanide Lewis acid complexes. This new class of ligand promises to be of interest as chiral C₃ symmetric ligand systems for substitution on lanthanide metal centres have yet to be reported. This work summarises several useful synthetic strategies for the preparation of chiral C₃ symmetric ligands in multigram quantities. The application of these higher order symmetry ligands in enantioselective catalysis remains an important area of research.
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Acevedo, Orlando. "Principles of chemical reactivity on the Diels-Alder reaction in ionic liquids and Lewis acid large-scale computations." 2003. http://etd1.library.duq.edu/theses/available/etd-06302003-140053/.

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Plumley, Joshua A. "New conceptual understanding of Lewis acidity, coordinate covalent bonding, and catalysis." 2009. http://digital.library.duq.edu/u?/etd,104615.

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Books on the topic "Carboxylic acids. Diels-Alder reaction"

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Santelli, Maurice. Lewis acids and selectivity in organic synthesis. Boca Raton: CRC Press, 1996.

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Book chapters on the topic "Carboxylic acids. Diels-Alder reaction"

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Sartori, G., and R. Maggi. "Diels–Alder Reaction." In Three Carbon-Heteroatom Bonds: Acid Halides; Carboxylic Acids and Acid Salts, 1. Georg Thieme Verlag KG, 2007. http://dx.doi.org/10.1055/sos-sd-020-01344.

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Vedantham, P., M. Jiménez, and P. R. Hanson. "Diels–Alder Reaction." In Three Carbon-Heteroatom Bonds: Acid Halides; Carboxylic Acids and Acid Salts, 1. Georg Thieme Verlag KG, 2007. http://dx.doi.org/10.1055/sos-sd-020-00215.

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Vedantham, P., M. Jiménez, and P. R. Hanson. "Asymmetric Diels–Alder Reaction." In Three Carbon-Heteroatom Bonds: Acid Halides; Carboxylic Acids and Acid Salts, 1. Georg Thieme Verlag KG, 2007. http://dx.doi.org/10.1055/sos-sd-020-00217.

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Vedantham, P., M. Jiménez, and P. R. Hanson. "Tandem Ene/Intramolecular Diels–Alder Reaction." In Three Carbon-Heteroatom Bonds: Acid Halides; Carboxylic Acids and Acid Salts, 1. Georg Thieme Verlag KG, 2007. http://dx.doi.org/10.1055/sos-sd-020-00216.

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Westbrook, J. A., and S. E. Schaus. "Hetero-Diels–Alder Reactions." In Three Carbon-Heteroatom Bonds: Acid Halides; Carboxylic Acids and Acid Salts, 1. Georg Thieme Verlag KG, 2007. http://dx.doi.org/10.1055/sos-sd-020-01025.

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Wolkenberg, S. E., and R. M. Garbaccio. "Diels–Alder Cycloaddition Reactions of Chiral Nitroso Compounds." In Three Carbon-Heteroatom Bonds: Acid Halides; Carboxylic Acids and Acid Salts, 1. Georg Thieme Verlag KG, 2007. http://dx.doi.org/10.1055/sos-sd-020-00399.

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Garbaccio, R. M., and S. E. Wolkenberg. "Introduction of the Side Chain: Diels–Alder Cycloaddition Reactions." In Three Carbon-Heteroatom Bonds: Acid Halides; Carboxylic Acids and Acid Salts, 1. Georg Thieme Verlag KG, 2007. http://dx.doi.org/10.1055/sos-sd-020-01096.

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Subramanian, L. R. "Synthesis of Arene-1,2-dicarboxylic Acid Esters by Diels–Alder Reaction ­Followed by Aromatization." In Three Carbon-Heteroatom Bonds: Acid Halides; Carboxylic Acids and Acid Salts, 1. Georg Thieme Verlag KG, 2007. http://dx.doi.org/10.1055/sos-sd-020-00859.

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Spanka, C., and E. Schaumann. "Retro-Diels–Alder Reaction." In Three Carbon-Heteroatom Bonds: Thio-, Seleno-, and Tellurocarboxylic Acids and Derivatives; Imidic Acids and Derivatives; Ortho Acid Derivatives, 1. Georg Thieme Verlag KG, 2006. http://dx.doi.org/10.1055/sos-sd-023-00720.

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Wolkenberg, S. E., and R. M. Garbaccio. "Diels–Alder Cycloadditions." In Three Carbon-Heteroatom Bonds: Acid Halides; Carboxylic Acids and Acid Salts, 1. Georg Thieme Verlag KG, 2007. http://dx.doi.org/10.1055/sos-sd-020-00437.

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