Relevant bibliographies by topics / Meldrum's acid derivatives

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  2. Dissertations / Theses
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Academic literature on the topic 'Meldrum's acid derivatives'

Author: Grafiati
Published: 4 June 2021
Last updated: 19 February 2022

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Journal articles on the topic "Meldrum's acid derivatives"

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Dastoorani, Parvaneh, Mohammad A. Khalilzadeh, Fatemeh Khaleghi, Malek Taher Maghsoodlou, Werner Kaminsky, and Ali Shokuhi Rad. "Experimental and computational studies on the synthesis of diastereoselective natural-based Meldrum spiro dibenzofuran derivatives." New Journal of Chemistry 43, no. 17 (2019): 6615–21. http://dx.doi.org/10.1039/c9nj00766k.

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Herein, a novel route to achieve chiral Meldrum spiro dibenzofuran derivatives was developed, which involved a 2,2-dimethyl-1,3-dioxane-4,6-dione (Meldrum's acid)-mediated Knoevenagel reaction of substituted aryl halides, followed by a Diels–Alder reaction with euparin as a natural compound.
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Gould, R. O., S. G. Harris, H. McNab, S. Parsons, and K. Withell. "Two Methylsulfanylmethylene Derivatives of Meldrum's Acid." Acta Crystallographica Section C Crystal Structure Communications 54, no. 2 (1998): 234–36. http://dx.doi.org/10.1107/s0108270197014170.

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Shaabani, Ahmad, and Mohammad Bagher Teimouri. "The Reaction of Alkyl Isocyanides and Benzylidene Meldrum's Acid Derivatives in the presence of Water: A One-Pot synthesis of 4-(Alkylamino)-3-Aryl-4-Oxobutanoic Acids." Journal of Chemical Research 2002, no. 9 (2002): 433–35. http://dx.doi.org/10.3184/030823402103172761.

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Blake, A. J., R. O. Gould, I. Irving, H. McNab, and M. Morrow. "Two N-aminoazolylmethylene derivatives of Meldrum's acid." Acta Crystallographica Section C Crystal Structure Communications 50, no. 12 (1994): 1935–38. http://dx.doi.org/10.1107/s0108270194007213.

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Khopade, Tushar M., Prakash K. Warghude, Amol D. Sonawane, and Ramakrishna G. Bhat. "Multicomponent synthesis of pyroglutamic acid derivatives via Knoevenagel–Michael-hydrolysis-lactamization-decarboxylation (KMHL-D) sequence." Organic & Biomolecular Chemistry 17, no. 3 (2019): 561–66. http://dx.doi.org/10.1039/c8ob02473a.

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Moosazadeh, Elham, Enayatollah Sheikhhosseini, Dadkhoda Ghazanfari, and Shahla Soltaninejad. "Uncatalyzed Synthesis of New Antibacterial Bisarylidene Meldrum's Acid Derivatives Functionalized with Ether Groups." Letters in Organic Chemistry 16, no. 10 (2019): 818–24. http://dx.doi.org/10.2174/1570178616666181203145211.

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A series of new bisarylidene Meldrum’s acid derivatives (3a-i) were prepared in high yield by a condensation reaction between Meldrum's acid and ether functionalized dibenzaldehyde, without any catalyst. Regardless of the nature of the substitution, all the reactions were completed within 2-3 hours in ethanol at reflux condition. In the reactions, the column purification of the products was not needed. The FT-IR, 1H-NMR, 13C-NMR and mass spectra confirm the structure of the products. Furthermore, the antibacterial activities of some synthesized compounds were investigated. According t
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Janković, Nenad, Jovana Muškinja, Zoran Ratković, et al. "Solvent-free synthesis of novel vanillidene derivatives of Meldrum's acid: biological evaluation, DNA and BSA binding study." RSC Advances 6, no. 45 (2016): 39452–59. http://dx.doi.org/10.1039/c6ra07711k.

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Ghosh, Santanu, Anisha Purkait, and Chandan K. Jana. "Environmentally benign decarboxylative N-, O-, and S-acetylations and acylations." Green Chemistry 22, no. 24 (2020): 8721–27. http://dx.doi.org/10.1039/d0gc03731a.

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Janikowska, K., J. Rachoń, and S. Makowiec. "Acyl Meldrum's acid derivatives: application in organic synthesis." Russian Chemical Reviews 83, no. 7 (2014): 620–37. http://dx.doi.org/10.1070/rc2014v083n07abeh004441.

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Huang, Xian, and Bang-Chi Chen. "Synthesis of Bisalkylthiolydine Derivatives of Meldrum's Acid and Barbituric Acid." Synthesis 1986, no. 11 (1986): 967–68. http://dx.doi.org/10.1055/s-1986-31842.

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Dissertations / Theses on the topic "Meldrum's acid derivatives"

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Withell, Kirsti. "Gas-phase pyrolysis of amino- and amidomethylidene Meldrum's acid derivatives." Thesis, University of Edinburgh, 1998. http://hdl.handle.net/1842/11597.

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A range of new amino- and amidomethylidene Meldrum's acid derivatives have been prepared and subjected to flash vacuum pyrolysis. The <I>N-</I>substituents were chosen as potential groups for the expected pyrolysis products, pyrrol-3(2<I>H</I>)-ones. The initial use of silanes, hydrazines and benzylamines was not successful; silylamines were quantitatively deprotected on reaction with 5-methoxymethylidene Meldrum's acid (MMMA), hydrazine derivatives were successfully prepared but pyrolyses failed to produce protected pyrrolones and, although <I>N-</I>benzyl protected pyrrolones could be prepar
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Fishlock, Daniel. "The Catalytic Intramolecular Friedel-Crafts Acylation of Meldrum's Acid Derivatives and The Total Synthesis of Taiwaniaquinol B." Thesis, University of Waterloo, 2005. http://hdl.handle.net/10012/1226.

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The intramolecular Friedel-Crafts acylation of aromatics with Meldrum?s acid derivatives catalyzed by metal trifluoromethanesulfonates and other Lewis acids is reported. Meldrum?s acids are easily prepared, functionalized, handled, and purified. The synthesis of polysubstituted 1-indanones from benzyl Meldrum's acids was investigated thoroughly, and it was shown that a variety of catalysts were effective, whilst accommodating a diversity of functional groups under mild conditions. The scope, limitations, and functional group tolerance (terminal alkene and alkyne, ketal, dialkyl ether, di
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Annibaletto, Julien. "L'alkylidène de l'acide de Meldrum comme plateforme utile en réaction multicomposés organocatalysée Catalytic enantioselective syntheses of isoxazolidin-5-ones C5‐disubstituted Meldrum's acid derivatives as platform for the organocatalytic synthesis of c3‐alkylated dihydrocoumarins." Thesis, Normandie, 2019. http://www.theses.fr/2019NORMIR19.

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L’objectif de cette thèse a été d’accéder à des hétérocycles chiraux, les isoxazolidin-5-ones, par le biais d’une réaction multicomposés organocatalysée impliquant un intermédiaire très réactif qui est l’alkylidène de l’acide de Meldrum. A l’aide de nucléophiles atypiques dérivés d’urée et d’un nouvel organocatalyseur dérivé du Quinquina, nous sommes parvenus à développer la première version énantiosélective organocatalysée de la réaction multicomposés de Knoevenagel/aza-Michael/Cyclocondensation permettant d’accéder aux isoxazolidin-5-ones β-substituées énantioenrichies. Une version diastéréo
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Legros, Fabien. "Nouvelles applications de paires d'ions coopératifs chirales en organocatalyse : utilisations dans des réactions mettant en jeu l'acide de Meldrum et ses dérivés." Thesis, Normandie, 2017. http://www.theses.fr/2017NORMR026/document.

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Les travaux présentés dans ce manuscrit de thèse concernent la mise au point de nouvelles méthodologies de synthèse asymétrique en organocatalyse promues par des phénolates d’ammoniums quaternaires, catalyseurs de type paires d’ions coopératifs chirales, et des dérivés de l’acide de Meldrum comme substrats. Dans un premier temps, nous avons utilisé l’acide de Meldrum comme un précurseur de cétène via une cycloréversion induite par O-silylation grâce à une probase silylée, afin de réaliser une réaction de cycloaddition [2+2] avec un aldéhyde ou une imine catalysée par un phénolate d’ammonium ch
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Chen, Ying-Chen, and 陳胤禎. "Synthesis and properties of Meldrum's acid derivatives reactive polymer." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/bp85q7.

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Sheikh, Ahmad al [Verfasser]. "Synthese von organischen und anorganischen Derivativen der Meldrumsäure = Synthesis of organic and inorganic derivatives of Meldrum's acid / vorgelegt von Ahmad Al-Sheikh." 2004. http://d-nb.info/972415440/34.

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Lin, Liang-Kai, and 林莨凱. "Preparation and Properties of Thermosetting resins based on Meldrum’s acid derivatives." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/4fj2gx.

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博士<br>國立清華大學<br>化學工程學系所<br>106<br>Meldrum’s acid (MA) could perform thermolysis reaction, with releasing acetone and CO2 molecules, to generate a highly reactive ketene group, which could perform self-dimerization to generate 4-membered cyclic 1,3-dione group and addition reactions toward other unsaturated groups and nucleophile groups. Consequently, MA is highly potential for involving in thermally induced crosslinking reactions and preparation of corresponding thermosetting resins. The features of MA and its derivatives have been utilized in this work for developments of new types of thermos
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CHEN, YI, and 陳宜. "Characteristics of curing reaction and properties of crosslinked resins of the reactive blends of Meldrum’s acid derivatives and benzoxazine compounds." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/91870284849921249812.

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碩士<br>國立清華大學<br>化學工程學系<br>104<br>This study focuses on Meldrum’s acid (MA) polymerization mechanism as well as the properties of the correspond crosslinked polymers. In the first part, MA derivatives are blended with benzoxazine compound (F-BZ) with tertiary amine structure, which is a Lewis base, to undergo thermolysis at a much lower temperature. By means of DSC, TGA, FT-IR and NMR characterization, we confirmed its catalytic effect and mechanism. Furthermore, by this reaction mechanism, different equivalent MA derivative (MA-F) are applied to modify polybenzoxazine. Results indicate polymer
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Moon, David Thompson. "The Conjugate Addition of Novel Nucleophiles and Catalytic Intramolecular Tandem [1,5]-Hydride Shift / Cyclization and Friedel-Crafts Acylation with Alkylidene Meldrum’s Acid Derivatives." Thesis, 2008. http://hdl.handle.net/10012/4061.

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Investigations into the conjugate addition of phenols and sp3-hybridized carbons bound to tin, boron and silicon by transition metal catalysts through novel transmetallation pathways were undertaken with limited success. An intramolecular Lewis acid-catalyzed tandem [1,5]-hydride shift / cyclization and Friedel-Crafts acylation reaction with alkylidene Meldrum’s acid derivatives has been accomplished. The use of metal phenolates as nucleophiles for transition metal catalyzed conjugate addition onto alkylidene Meldrum’s acids is explored, and the ambident nucleophilic property of metal phenola
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Book chapters on the topic "Meldrum's acid derivatives"

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Pinori, Massimo, Silvana Cappelletti, Andrea Zaliani, and Antonio Silvio Verdini. "Synthesis of retro-inverso peptides via Meldrum’s acid derivatives: Insight on the reaction mechanism." In Peptides 1992. Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-1470-7_274.

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Masse, C. E. "Microwave Hydrolysis of Meldrum's Acid Derivatives." In Three Carbon-Heteroatom Bonds: Acid Halides; Carboxylic Acids and Acid Salts. Georg Thieme Verlag KG, 2007. http://dx.doi.org/10.1055/sos-sd-020-00288.

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Austin, W. F., J. J. Kowalczyk, G. B. Dudley, and R. L. Danheiser. "Thermolysis of Alkylidene Derivatives of Meldrum's Acid." In Three Carbon-Heteroatom Bonds: Thio-, Seleno-, and Tellurocarboxylic Acids and Derivatives; Imidic Acids and Derivatives; Ortho Acid Derivatives. Georg Thieme Verlag KG, 2006. http://dx.doi.org/10.1055/sos-sd-023-00196.

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Kollenz, G. "Flash-Vacuum Pyrolysis of Meldrum's Acid Derivatives." In Three Carbon-Heteroatom Bonds: Thio-, Seleno-, and Tellurocarboxylic Acids and Derivatives; Imidic Acids and Derivatives; Ortho Acid Derivatives. Georg Thieme Verlag KG, 2006. http://dx.doi.org/10.1055/sos-sd-023-00369.

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Tidwell, T. T. "Bis(acylketenes) by Thermolysis of Bis(dioxinones) and Bis(Meldrum's acid) Derivatives." In Three Carbon-Heteroatom Bonds: Thio-, Seleno-, and Tellurocarboxylic Acids and Derivatives; Imidic Acids and Derivatives; Ortho Acid Derivatives. Georg Thieme Verlag KG, 2006. http://dx.doi.org/10.1055/sos-sd-023-00688.

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Taber, Douglass. "Stereocontrolled C-O Ring Construction: The Morimoto Synthesis of ( + )-Omaezakianol." In Organic Synthesis. Oxford University Press, 2011. http://dx.doi.org/10.1093/oso/9780199764549.003.0048.

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Tobin J. Marks of Northwestern University observed (J. Am. Chem. Soc. 2009, 131, 263) high geometric control in the cyclization of 1 to 2 . Tristan H. Lambert of Columbia University found (Organic Lett. 2009, 11, 1381) that Bi could catalyze both the addition of the ketene silyl acetal 4 to 3, and the subsequent cyclization of the secondary alcohol so formed, to give the product ether 5 with high diastereocontrol. Glenn M. Sammis of the University of British Columbia devised (Organic Lett. 2009, 11, 2019) a radical relay cyclization of 6 to 7, again with high diastereocontrol. Eric Fillion of the University of Waterloo established (Organic Lett. 2009, 11, 1919) that conjugate addition to the Meldrum’s acid derivative 8 proceeded with high stereoselectivity, delivering the useful chiron 10. Gregory C. Fu of MIT found (Angew. Chem. Int. Ed. 2009, 48, 2225) that both five- and six-membered ring ethers could be formed with high enantiocontrol from alkyne alcohols such as 11. The catalyst was a chiral phosphine. Christian M. Rojas of Barnard College established (Organic Lett. 2009, 11, 1527) a route to 2-amino sugars such as 15, by Rh-mediated intramolecular nitrene addition in the presence of the trapping agent 14. J. S. Yadav of the Indian Institute of Chemical Technology, Hyderabad devised (Tetrahedron Lett. 2009, 50, 81) a route to C-glycosides such as 18, by condensation of a glycal 16 with an isonitrile 17. Michel R. Gagné of the University of North Carolina developed (Organic Lett. 2009, 11, 879) a complementary route to C-glycosides such as 21, with control of side chain relative configuration. Note that the addition to the methacrylate 20 is likely proceeding by initial one-electron reduction, since reductive β-elimination is not observed. It is also possible to construct larger rings. Frank E. McDonald of Emory University devised a flexible route to protected tetraols such as 22, and showed (Organic Lett. 2009 , 11, 851) that it could be cyclized selectively to the septanoside 23. Kenshu Fujiwara of Hokkaido University found (Tetrahedron Lett. 2009, 50, 1236) that ring-closing metathesis of 24 delivered the eight-membered ring product 25 in near quantitative yield.
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Conference papers on the topic "Meldrum's acid derivatives"

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Carneiro, Vânia M. T., Daniela B. B. Trivella, Ricardo Aparicio, and Ronaldo A. Pilli. "Synthesis of Six-membered Ring Analogues of RK-682 and Meldrum’s acid derivatives. Evaluation on the Inhibition of Protein Tyrosine Phosphatases." In 15th Brazilian Meeting on Organic Synthesis. Editora Edgard Blücher, 2013. http://dx.doi.org/10.5151/chempro-15bmos-bmos2013_201382195919.

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Santana, Lourenço Luis Botelho de, and Silvio Cunha. "Aza-bicycles Synthesis Through Formal Aza [3+3], [3+2+1] and [3+1+1+1] Cycloadditions Between Enaminones, Aldehydes and Meldrum’s Acid Derivatives." In 14th Brazilian Meeting on Organic Synthesis. Editora Edgard Blücher, 2013. http://dx.doi.org/10.5151/chempro-14bmos-r0056-1.

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