Relevant bibliographies by topics / Acide isocyanique

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  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters

Academic literature on the topic 'Acide isocyanique'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Acide isocyanique"

1

Reguera, Leslie, Cecilia I. Attorresi, Javier A. Ramírez, and Daniel G. Rivera. "Steroid diversification by multicomponent reactions." Beilstein Journal of Organic Chemistry 15 (June 6, 2019): 1236–56. http://dx.doi.org/10.3762/bjoc.15.121.

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Reports on structural diversification of steroids by means of multicomponent reactions (MCRs) have significantly increased over the last decade. This review covers the most relevant strategies dealing with the use of steroidal substrates in MCRs, including the synthesis of steroidal heterocycles and macrocycles as well as the conjugation of steroids to amino acids, peptides and carbohydrates. We demonstrate that steroids are available with almost all types of MCR reactive functionalities, e.g., carbonyl, carboxylic acid, alkyne, amine, isocyanide, boronic acid, etc., and that steroids are suitable starting materials for relevant MCRs such as those based on imine and isocyanide. The focus is mainly posed on proving the amenability of MCRs for the diversity-oriented derivatization of naturally occurring steroids and the construction of complex steroid-based platforms for drug discovery, chemical biology and supramolecular chemistry applications.
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Chen, Zhen-Bang, Kui Liu, Fang-Ling Zhang, Qing Yuan, and Yong-Ming Zhu. "Palladium-catalyzed oxidative coupling of arylboronic acid with isocyanide to form aromatic carboxylic acids." Organic & Biomolecular Chemistry 15, no. 38 (2017): 8078–83. http://dx.doi.org/10.1039/c7ob01428g.

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Rainoldi, Giulia, Giordano Lesma, Claudia Picozzi, Leonardo Lo Presti, and Alessandra Silvani. "One step access to oxindole-based β-lactams through Ugi four-center three-component reaction." RSC Advances 8, no. 61 (2018): 34903–10. http://dx.doi.org/10.1039/c8ra08165d.

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Ghashghaei, Ouldouz, Consiglia Annamaria Manna, Esther Vicente-García, Marc Revés, and Rodolfo Lavilla. "Studies on the interaction of isocyanides with imines: reaction scope and mechanistic variations." Beilstein Journal of Organic Chemistry 10 (January 6, 2014): 12–17. http://dx.doi.org/10.3762/bjoc.10.3.

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The interaction of imines with isocyanides has been studied. The main product results from a sequential process involving the attack of two units of isocyanide, under Lewis acid catalysis, upon the carbon–nitrogen double bond of the imine to form the 4-membered ring system. The scope of the reaction regarding the imine and isocyanide ranges has been determined, and also some mechanistic variations and structural features have been described.
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Hu, Langxi, Weijun Gui, Zichen Liu, and Baishan Jiang. "Synthesis of 3-aryl-2-aminoquinolines: palladium-catalyzed cascade reactions of gem-dibromovinylanilines with tert-butyl isocyanide and arylboronic acids." RSC Adv. 4, no. 72 (2014): 38258–62. http://dx.doi.org/10.1039/c4ra05670a.

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Paprocki, Daniel, Dominik Koszelewski, Anna Żądło, Peter Walde, and Ryszard Ostaszewski. "Environmentally friendly approach to α-acyloxy carboxamides via a chemoenzymatic cascade." RSC Advances 6, no. 72 (2016): 68231–37. http://dx.doi.org/10.1039/c6ra13078j.

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Anary-Abbasinejad, Mohammad, Maryam Rasekh, and Hossein Anaraki-Ardakani. "Four-Component Reaction of Isocyanides, Acetylenic Esters, and Carboxylic Acids for the Synthesis of Functionalised 2,5-diaminofurans." Journal of Chemical Research 2009, no. 5 (May 2009): 271–73. http://dx.doi.org/10.3184/030823409x439735.

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An improved four-component reaction of isocyanides is described. The reaction between two equivalents of an isocyanide, dialkyl acetylenedicarboxylates and aliphatic carboxylic acids at room temperature leads to 2,5-diaminofuran derivatives in good yields.
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Marandi, Ghasem. "Synthesis of 3-(Cyclohexylamino)-2-arylimidazo[1,2-a]pyridine-8- carboxylic Acids Via an Efficient Three-component Condensation Reaction between Cyclohexylisocyanide and 2-Aminopyridine-3-carboxylic Acid in the Presence of Aromatic Aldehyde." Combinatorial Chemistry & High Throughput Screening 21, no. 4 (May 25, 2018): 298–301. http://dx.doi.org/10.2174/1386207321666180416153112.

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Aim and Objective: The reaction of cyclohexylisocyanide and 2-aminopyridine-3- carboxylic acid in the presence of benzaldehyde derivatives in ethanol led to 3-(cyclohexylamino)-2- arylimidazo[1,2-a]pyridine-8-carboxylic acids in high yields. In a three component condensation reaction, isocyanide reacts with 2-aminopyridine-3-carboxylic acid and aromatic aldehydes without any prior activation. Material and Methods: The synthesized products have stable structures which have been characterized by IR, 1H, 13C and Mass spectroscopy as well as CHN-O analysis. Results: In continuation of our attempts to develop simple one-pot routes for the synthesis of 3- (cyclohexylamino)-2-arylimidazo[1,2-a]pyridine-8-carboxylic acids, aromatic aldehydes with divers substituted show a high performance. Conclusion: In conclusion, this study introduces the art of combinatorial chemistry using a simple one-pot procedure for the synthesis of new materials which are interesting compounds in medicinal and biological sciences.
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Cao, Ming, Qing-Hu Teng, Zhi-Wei Xi, Li-Qiu Liu, Ren-Yong Gu, and Ying-Chun Wang. "Facile synthesis of 2-alkynyl oxazoles via a Ce(OTf)3-catalyzed cascade reaction of alkynyl carboxylic acids with tert-butyl isocyanide." Organic & Biomolecular Chemistry 18, no. 4 (2020): 655–59. http://dx.doi.org/10.1039/c9ob02337b.

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We developed an efficient and novel protocol to synthesize 2-alkynyloxazoles from tert-butyl isocyanide and alkynyl carboxylic acids, and these diversely functionalized oxazoles showed a certain degree of biological activity.
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Wang, Zikun, Xihe Bi, Yongjiu Liang, Peiqiu Liao, and Dewen Dong. "A copper-catalyzed formal O–H insertion reaction of α-diazo-1,3-dicarbonyl compounds to carboxylic acids with the assistance of isocyanide." Chem. Commun. 50, no. 30 (2014): 3976–78. http://dx.doi.org/10.1039/c4cc00402g.

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Straightforward synthetic access to α-acyloxy-1,3-dicarbonyl compounds is described via a novel Cu(ii)-catalyzed and isocyanide-assisted formal O–H insertion reaction of α-diazocarbonyl compounds to carboxylic acids.
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Dissertations / Theses on the topic "Acide isocyanique"

1

Mercadier, Jacques. "Décomposition thermique des isocyanurates : application à la préparation d'acide isocyanique par sublimation et pyrolyse d'acide isocyanurique en réacteur cyclone." Vandoeuvre-les-Nancy, INPL, 1992. http://www.theses.fr/1992INPL121N.

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La pyrolyse des isocyanurates produit les isocyanates correspondants. Ainsi, celle du tribenzylisocyanurate donne du benzylisocyanate. Le benzonitrile, le benzène, le toluène et le monoxyde de carbone sont également formés. En milieu anhydre, la pyrolyse du triphenylisocyanurate produit le phenylisocyanate avec des rendements atteignant 100 pour-cent. L'acide isocyanurique se pyrolyse en donnant l'acide isocyanique avec des rendements atteignant 85 pour-cent. Cependant, ce dernier se décompose lui-même thermiquement. Les cinétiques globales des réactions du triphenylisocyanurate et de l'acide isocyanurique ont été déterminées dans un réacteur tubulaire assimilable à un réacteur piston. La pyrolyse de l'acide isocyanurique a alors été réalisée dans un réacteur cyclone qui permet, en moins d'une seconde, de chauffer, sublimer, séparer les particules non sublimées et, enfin, de le pyrolyser en phase gazeuse. Sa sublimation, assez facile, a été modélisée de façon satisfaisante et il semble alors possible de prévoir ses résultats dans un cyclone de dimensions quelconques. Un modèle charge de décrire la pyrolyse de l'acide isocyanurique en réacteur cyclone a également été élaboré. Il tient compte de sa libération progressive en phase gazeuse dans le réacteur.
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Raunier, Sébastien. "Etude par spectrométrie IRTF de la réactivité de l'acide isocyanique (HNCO) avec des glaces composées d'eau et d'ammoniac : production spontanée de l'ion OCN ̄ dans le milieu interstellaire." Phd thesis, Université de Provence - Aix-Marseille I, 2003. http://tel.archives-ouvertes.fr/tel-00009640.

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Les glaces interstellaires sont composées de CO, H2O, NH3, .... Soumis à un flux lumineux émanant des étoiles (λ > 120 nm) ces glaces peuvent évoluer vers la formation de molécules plus complexes. Parmi celles-ci, on trouve l'acide isocyanique (HNCO) dont nous avons étudié la réactivité avec des glaces de H2O, de NH3, de NH3/H2O. Nous avons montré qu'il pouvait être à l'origine de la formation de l'ion OCN-. Cet ion peut être caractérisé sur les spectres ISO de sources protostellaires, par sa bande dite "XCN" à 4,62 μm (2167 cm-1). Une production spontanée de l'ion OCN- cohérente avec le domaine de température (10 - 100 K) dans lequel évoluent ces glaces, se produit entre HNCO et NH3 en excès codéposés à 10 K. Un sel analogue à NH4+OCN- est formé au-delà de 160 K. Des calculs quantiques ont montré que la solvatation d'une molécule de NH3 directement liée à HNCO par trois autres molécules de NH3, joue un rôle important dans le processus de formation de NH4+ et OCN- et confirment le caractère spontané de cette réaction. L'irradiation UV (λ > 120 nm) de HNCO solide a conduit à la formation de OCN- mais aussi de composés carbonylés tels que le formaldéhyde, le formamide, et l'urée. La comparaison du spectre des photoproduits primaires avec le spectre ISO des glaces NGC7538 IRS9 ou W33A, permet de donner une tentative d'attribution pour les bandes situées à 1700 cm-1 et 1470 cm-1.
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3

Liu, Jia, and 刘佳. "Luminescent cyclometalated platinum (II) complexes with isocyanide ligands as nucleic acid probes, topoisomerase poisons and anti-cancers agents." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2011. http://hdl.handle.net/10722/209595.

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Chen, Chao-Chih, and 陳昭智. "Kinetics and Mechanism of Acid-catalyzed Hydrolysis of Cyclohexyl Isocyanide and pKa Determination of N-Cyclohexylnitrilium Ion." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/77864370422577218317.

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碩士
國立成功大學
化學系
89
Kinetics and mechanism of acid-catalyzed hydrolysis of cyclohexyl isocyanide were studied in aqueous solutions. In the acid-catalyzed reaction, we used solvent isotope effect and buffer check to understand the mechanisn of cyclohexyl isocyanide. First, in solvent isotope effect experiments, the ratio kD+/ kH+ is 2.28, and shows inverse solvent isotope effect, which indicates specific hydronium ion catalysis in this system. The reaction involves a fast, pre-equilibrium protonation before a rate- determining step. However, in the buffer check experiments, hydrolysis of cyclohexyl isocyanide was catalyzed by undissociated acetic acid at the buffer systems. In the results of kinetics analysis of the reaction, we can know that it could include two kind of mechanisms in the acid-catalyzed hydrolysis of cyclohexyl isocyanide. The explainable mechanism for the reaction involves a fast pre-equilibrium C-protonation of the isocyanide (specific acid catalysis), followed by rate-determining attack of water on the electron-deficient carbon of the protonated isocyanide, which is catalyzed by slow hydration by CH3CO2Na (a general base catalysis). The experiments were done by keeping the concentration of hydronium ion, and varying the temperature of reaction. To get the entropy of activation (ΔS‡) of acid-catalyzed hydrolysis of cyclohexyl isocyanide is -29 ±2.5 cal / mole k, indicates that the specific hydronium ion catalyzed process involves A-2 mechanism in the rate-determining step. Furthermore, the acid-catalyzed hydrolysis of cyclohexyl isocyanide was also carried out in high concentration of HCl aqueous solution. To get the pH-rate profile and gain the equation by empirical rate law. Finally, we can find the pKa for N-cyclohexylnitrilium ion is 0.86 ±0.05.
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Book chapters on the topic "Acide isocyanique"

1

Gulevich, Anton V., Alexander G. Zhdanko, Romano V. A. Orru, and Valentine G. Nenajdenko. "Synthetic Application of Isocyanoacetic Acid Derivatives." In Isocyanide Chemistry, 109–58. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2012. http://dx.doi.org/10.1002/9783527652532.ch4.

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El Kaïm, Laurent, and Laurence Grimaud. "Ugi and Passerini Reactions with Carboxylic Acid Surrogates." In Isocyanide Chemistry, 159–94. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2012. http://dx.doi.org/10.1002/9783527652532.ch5.

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Wolkenberg, S. E., and R. M. Garbaccio. "Asymmetric Addition of Isocyanide to Imines (Ugi Synthesis)." 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-020-00392.

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Perst, H. "Rearrangement of a Transition Metal–Isocyanide Complex." 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-023-00756.

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Perst, H. "Addition of Carbenes to Transition Metal–Isocyanide Complexes." 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-023-00754.

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"Carboxylic Acid Derivative, Lactam Carbonyl or Isocyanide and Methylene." In Chemistry of Heterocyclic Compounds: A Series Of Monographs, 1086–93. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2008. http://dx.doi.org/10.1002/9780470187319.ch70.

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7

Suginome, M., and Y. Ito. "The Passerini Reaction: Synthesis of α-Acyloxycarboxamides by the Three-Component Coupling of an Isocyanide, a Carbonyl Compound, and a Carboxylic Acid." In Three Carbon-Heteroatom Bonds: Nitriles, Isocyanides, and Derivatives, 1. Georg Thieme Verlag KG, 2004. http://dx.doi.org/10.1055/sos-sd-019-00344.

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Suginome, M., and Y. Ito. "The Ugi Reaction: Synthesis of α-Acylaminocarboxamides by the Four-Component Coupling of an Isocyanide, a Carbonyl Compound, an Amine, and a Carboxylic Acid." In Three Carbon-Heteroatom Bonds: Nitriles, Isocyanides, and Derivatives, 1. Georg Thieme Verlag KG, 2004. http://dx.doi.org/10.1055/sos-sd-019-00345.

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