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Relevant bibliographies by topics / C heteroatom

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Academic literature on the topic 'C heteroatom'

Author: Grafiati

Published: 18 May 2024

Last updated: 21 December 2024

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Journal articles on the topic "C heteroatom"

1

Wang, Jia-Qi, Zhen-Yu Zuo, and Wei He. "Recent Advances of Green Catalytic System I2/DMSO in C–C and C–Heteroatom Bonds Formation." Catalysts 12, no. 8 (2022): 821. http://dx.doi.org/10.3390/catal12080821.

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Developing a green, practical and efficient method for the formation of C–C and C–Heteroatom bonds is an important topic in modern organic synthetic chemistry. In recent years, the I2/DMSO catalytic system has attracted wide attention because of its green, high efficiency, atomic economy, low cost, mild reaction conditions and it is environment-friendly, which is more in line with the requirements of sustainable chemistry. Heteroatom-containing compounds have shown lots of important applications in pharmaceutical synthesis, agrochemicals, material chemistry and organic dyes. At present, the I2

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2

Skalik, Joanna, Marek Koprowski, Ewa Różycka-Sokołowska, and Piotr Bałczewski. "The hetero-Friedel-Crafts-Bradsher Cyclizations with Formation of Ring Carbon-Heteroatom (P, S) Bonds, Leading to Organic Functional Materials." Materials 13, no. 21 (2020): 4751. http://dx.doi.org/10.3390/ma13214751.

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The interest in functional materials possessing improved properties led to development of new methods of their synthesis, which allowed to obtain new molecular arrangements with carbon and heteroatom motifs. Two of the classical reactions of versatile use are the Friedel-Crafts and the Bradsher reactions, which in the new heteroatomic versions allow to replace ring carbon atoms by heteroatoms. In the present work, we review methods of synthesis of C–S and C–P bonds utilizing thia- and phospha-Friedel-Crafts-Bradsher cyclizations. Single examples of C–As and lack of C–Se bond formation, involvi

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Kadjo, François Kassi, Sopi Thomas Affi, Yao Silvère Diki N’guessan, Mamadou Guy-Richard Koné, Georges Stéphane Dembélé, and Nahossé Ziao. "Theoretical Characterization of the Hydrogen Bonding Interaction Sites of Mycolactone C Using the ONIOM Method." Mediterranean Journal of Chemistry 11, no. 2 (2021): 185. http://dx.doi.org/10.13171/mjc02104261574mgrk.

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<p>In this work, the ONIOM method, recognized for its effectiveness on large molecules, was used to determine the geometric, energetic, and spectroscopic parameters of hydrogen bond interactions of mycolactone C. Mycolactone C; one of the most virulent forms of toxin, found in Africa and Australia. It has eight (08) oxygen heteroatoms which are all hybridized sp<sup>2</sup> and sp<sup>3</sup>. Using quantum chemistry methods, at the ONIOM level (B3LYP/6-311+G (d, p): AM1), we have determined the preferential binding sites of the hydrogen bonds in the eight mycolac

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Sharma, Mitu, Bhupendra Adhikari, Raymond Femi Awoyemi, et al. "Copper(II) NHC Catalyst for the Formation of Phenol from Arylboronic Acid." Chemistry 4, no. 2 (2022): 560–75. http://dx.doi.org/10.3390/chemistry4020040.

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Arylboronic acids are commonly used in modern organic chemistry to form new C–C and C–heteroatom bonds. These activated organic synthons show reactivity with heteroatoms in a range of substrates under ambient oxidative conditions. This broad reactivity has limited their use in protic, renewable solvents like water, ethanol, and methanol. Here, we report our efforts to study and optimize the activation of arylboronic acids by a copper(II) N-heterocyclic carbene (NHC) complex in aqueous solution and in a range of alcohols to generate phenol and aryl ethers, respectively. The optimized reactivity

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Zhou, Fengtao, and Qian Cai. "Recent advances in copper-catalyzed asymmetric coupling reactions." Beilstein Journal of Organic Chemistry 11 (December 15, 2015): 2600–2615. http://dx.doi.org/10.3762/bjoc.11.280.

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Copper-catalyzed (or -mediated) asymmetric coupling reactions have received significant attention over the past few years. Especially the coupling reactions of aryl or alkyl halides with nucleophiles became a very powerful tool for the formation of C–C, C–N, C–O and other carbon–heteroatom bonds as well as for the construction of heteroatom-containing ring systems. This review summarizes the recent progress in copper-catalyzed asymmetric coupling reactions for the formation of C–C and carbon–heteroatom bonds.

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Peng, Haihui, Rong Cai, Chang Xu, Hao Chen, and Xiaodong Shi. "Nucleophile promoted gold redox catalysis with diazonium salts: C–Br, C–S and C–P bond formation through catalytic Sandmeyer coupling." Chemical Science 7, no. 9 (2016): 6190–96. http://dx.doi.org/10.1039/c6sc01742h.

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Mamgain, Ritu, Kokila Sakthivel, and Fateh V. Singh. "Recent advances in transition-metal-free arylation reactions involving hypervalent iodine salts." Beilstein Journal of Organic Chemistry 20 (November 13, 2024): 2891–920. http://dx.doi.org/10.3762/bjoc.20.243.

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Diaryliodonium salts have become widely recognized as arylating agents in the last two decades. Both, symmetrical and unsymmetrical forms of these salts serve as effective electrophilic arylating reagents in various organic syntheses. The use of diaryliodoniums in C–C and carbon–heteroatom bond formations, particularly under metal-free conditions, has further enhanced the popularity of these reagents. In this review, we concentrate on various arylation reactions involving carbon and other heteroatoms, encompassing rearrangement reactions in the absence of any metal catalyst, and summarize adva

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Kim, Jin Hee, Jong Hun Han, Jae-Hyung Wee, Go Bong Choi, Seungki Hong, and Yoong Ahm Kim. "Importance of Doping Sequence in Multiple Heteroatom-Doped Reduced Graphene Oxide as Efficient Oxygen Reduction Reaction Electrocatalysts." Applied Nano 2, no. 3 (2021): 267–77. http://dx.doi.org/10.3390/applnano2030019.

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Multiple heteroatom-doped graphene is of great interest for developing an efficient electrocatalyst for oxygen reduction reaction (ORR). To maximize the electrocatalytic performance of doped graphene, the competitive doping mechanism caused by the different atomic sizes of dopants should be developed. Herein, three different heteroatoms (e.g., N, P and B) are competitively introduced into reduced graphene oxide (RGO) using both single- and two-step processes. The total quantity of heteroatoms for ternary RGO synthesized using the two-step process is lower than that when using the single-step p

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Desnoyer, Addison N., and Jennifer A. Love. "Recent advances in well-defined, late transition metal complexes that make and/or break C–N, C–O and C–S bonds." Chemical Society Reviews 46, no. 1 (2017): 197–238. http://dx.doi.org/10.1039/c6cs00150e.

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Beletskaya, Irina P. "Palladium catalyzed C-C and C-heteroatom bond formation reactions." Pure and Applied Chemistry 69, no. 3 (1997): 471–76. http://dx.doi.org/10.1351/pac199769030471.

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Dissertations / Theses on the topic "C heteroatom"

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Zárate, Sáez Cayetana. "C-heteroatom bond-formation via ni-catalyzed c-o bond cleavage." Doctoral thesis, Universitat Rovira i Virgili, 2017. http://hdl.handle.net/10803/401555.

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Tot i que el camp de l'acoblament creuat ha desenvolupat increïbles avenços, la gran majoria de processos encara es basen en l'ús d'halurs d'aril. No obstant, aquest tipus d’electròfils presenten una toxicitat intrínseca i, al mateix temps, la seva síntesis resulta tediosa, especialment quan es tracta d'halurs d'aril altament funcionalitzats. A causa d'això, la comunitat sintètica s'ha bolcat en la recerca d'alternatives a l'ús d'halurs d'aril en química d'acoblament creuat. Grans esforços s'han desenvolupat en la última dècada per implementar els derivats del fenol en aquest tipus de transfor

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Gu, Yiting. "C-H & C-O Functionalization by Silicon-Heteroatom Interelement Linkage." Doctoral thesis, Universitat Rovira i Virgili, 2019. http://hdl.handle.net/10803/668961.

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La química sintètica és gairebé inimaginable sense tres elements principals del grup, a saber, boro, silici i estany. Quan s'uneixen a un àtom de carboni de qualsevol hibridació, aquests grups funcionals serveixen de linchpins excepcionalment versàtils en síntesi, transformant-se selectivament en una enorme amplitud d'enllaços C-C i C-X, per tant, descobrir nous mètodes per forjar el valor afegit C-Si, Els enllaços C-B i C-Sn sempre tenen una gran demanda. D'acord amb l'interès de la investigació en el grup de Martín per activar enllaços o molècules inerts, aquesta tesi doctoral se centra en

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Tang, Renhe. "New Catalytic Process for C-Heteroatom Bond Formation." Electronic Thesis or Diss., Lyon 1, 2024. http://www.theses.fr/2024LYO10275.

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L'objectif principal de cette thèse est de concevoir de nouvelles méthodes catalytiques pour la synthèse de liaisons C-hétéroatome. Le travail est divisé en trois chapitres, chacun se concentrant sur un système catalytique et une réaction différents. Le premier chapitre explore l'utilisation du nickel en combinaison avec le xantphos comme catalyseur pour l'arylation du SeCF3 nucléophile en utilisant les triflates d'aryle comme partenaire de couplage. Ce système catalytique démontre une large applicabilité pour une variété de dérivés de triflate d'aryle. Grâce à une combinaison d'expériences st

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Kundu, Sekhar. "Poly ionic resins supported reagents and catalysts : applications to c c & c heteroatom bond forming reactions." Thesis, University of North Bengal, 2012. http://hdl.handle.net/123456789/1449.

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Ahire, M. "Novel C-C and C-heteroatom bond forming synthetic strategies for the construction of potential scaffolds by NHC-catalysis and difunctionalization of arynes." Thesis(Ph.D.), CSIR-National Chemical Laboratory, Pune, 2018. http://dspace.ncl.res.in:8080/xmlui/handle/20.500.12252/4547.

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Abstract: This thesis demonstrates our accomplishments in the field of N-heterocyclic carbene catalysis and aryne chemistry to construct novel organic scaffolds. Chapter 1 is divided into three sections. Section 1 provides information on NHC catalyzed reactions, in particular, the Stetter reaction with selected examples from literature, whereas section 2 and 3 deals with our work on N-heterocyclic carbene catalyzed Stetter reactions of aromatic aldehydes with maleimides and N-substituted itaconimides, respectively. The developed Stetter reactions worked well under operationally simple rea

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Dwivedi, Seema. "Green approaches towards transition-metal catalyzed and metal-free c - c and c - heteroatom coupling reactions." Thesis, University of North Bengal, 2019. http://ir.nbu.ac.in/handle/123456789/3646.

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Kim, Young B. "Heteroatom insertion reactions of metal carbenoids : synthesis and biological evaluation for protein kinase C. /." Full text available from ProQuest UM Digital Dissertations, 2008. http://0-proquest.umi.com.umiss.lib.olemiss.edu/pqdweb?index=0&did=1836404551&SrchMode=1&sid=3&Fmt=2&VInst=PROD&VType=PQD&RQT=309&VName=PQD&TS=1258562682&clientId=22256.

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Thesis (Ph.D.)--University of Mississippi, 2008.<br>Typescript. Vita. Major professor: Dr. John M. Rimoldi "November 2008." Includes bibliographical references (leaves 114-136). Also available online via ProQuest to authorized users.

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Kunchithapatham, Kamala. "Development of Calcium and Palladium Catalysts for the Formation of Carbon-Carbon and Carbon-Heteroatom Bonds." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1337955731.

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Weber, Philip M. [Verfasser], Lukas J. [Gutachter] Gooßen, Gerald [Gutachter] Dyker, and Viktoria H. [Gutachter] Däschlein-Gessner. "Katalysatoren und Liganden zur Entwicklung von C-C- und C-Heteroatom-Bindungsknüpfungen / Philip M. Weber ; Gutachter: Lukas J. Gooßen, Gerald Dyker, Viktoria H. Däschlein-Gessner ; Fakultät für Chemie und Biochemie." Bochum : Ruhr-Universität Bochum, 2019. http://d-nb.info/120156073X/34.

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Bruneau, Alexandre. "Développement de nouvelles réactions métallo-catalysées pour la création de liaisons C-C et C-hétéroatomes : Application à la synthèse d’inhibiteurs de la Hsp90 et aux ligands de la lectine A." Thesis, Université Paris-Saclay (ComUE), 2015. http://www.theses.fr/2015SACLS138.

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Les travaux rapportés dans ce mémoire concernent le développement de nouvelles réactions métallo-catalysées pour la création de liaison carbone-hétéroatome et carbone-carbone ainsi que leurs applications à la synthèse de produits biologiquement actifs. La première partie de ce manuscrit est consacrée à l'étude de la réactivité des sucres dans les couplages organométalliques. Des conditions ont été développées pour la création de la liaison C-S entre glycosyl thiols et partenaires arylés. De plus, la création de la liaison carbone azote de glycosyl amines avec des acides boroniques a été étudié

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Books on the topic "C heteroatom"

1

Mermer, Arif, Neslihan Demirbas, and Ahmet Demirbas. Green Methodologies Leading to the Formation of New C-C and C-Heteroatom Bonds. Cambridge Scholars Publishing, 2022.

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Carreira, Erick M., Carl P. Decicco, John P. Wolfe, Mats Larhed, and Alois Fürstner. Cross-Coupling and Heck-Type Reactions 2: Carbon-Heteroatom Cross Coupling and C-C Cross Couplings of Acidic C-H Nucleophiles. Thieme Medical Publishers, Incorporated, 2013.

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Book chapters on the topic "C heteroatom"

1

Koser, Gerald F. "C-Heteroatom-Bond Forming Reactions." In Hypervalent Iodine Chemistry. Springer Berlin Heidelberg, 2002. http://dx.doi.org/10.1007/3-540-46114-0_5.

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2

Bonne, Damien, Thierry Constantieux, Yoann Coquerel, and Jean Rodriguez. "Cascade Reactions Forming Both C-C Bond and C-Heteroatom BOND." In Stereoselective Organocatalysis. John Wiley & Sons, Inc., 2013. http://dx.doi.org/10.1002/9781118604755.ch16.

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Nikitas, Nikolaos F., and Christoforos G. Kokotos. "C–C and C–Heteroatom bonds photocatalyzed and photoinitiated by carbonyls." In Photochemistry. Royal Society of Chemistry, 2021. http://dx.doi.org/10.1039/9781839165269-00270.

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Terada, M. "Heteroatom—Heteroatom Double Bonds as Enophiles." In Stereoselective Pericyclic Reactions, Cross Coupling, and C—H and C—X Activation. Georg Thieme Verlag KG, 2011. http://dx.doi.org/10.1055/sos-sd-203-00209.

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Echavarren, A. M., and S. Porcel. "C—C Bond-Forming Reactions." In Quinones and Heteroatom Analogues. Georg Thieme Verlag KG, 2006. http://dx.doi.org/10.1055/sos-sd-028-00530.

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Davies, H. M. L., and D. Morton. "Heteroatom-Directed C—H Functionalization." In Stereoselective Pericyclic Reactions, Cross Coupling, and C—H and C—X Activation. Georg Thieme Verlag KG, 2011. http://dx.doi.org/10.1055/sos-sd-203-00354.

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Lambert, Tristan H. "Asymmetric C–Heteroatom Bond Formation." In Organic Synthesis. Oxford University Press, 2015. http://dx.doi.org/10.1093/oso/9780190200794.003.0036.

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Tomislav Rovis at Colorado State University developed (Angew. Chem. Int. Ed. 2012, 51, 5904) an enantioselective catalytic cross-aza-benzoin reaction of aldehydes 1 and N-Boc imines 2. The useful α-amido ketone products 4 were configurationally stable under the reaction conditions. In the realm of asymmetric synthesis, few technologies have been as widely employed as the Ellman chiral sulfonamide auxiliary. Francisco Foubelo and Miguel Yus at the Universidad de Alicante in Spain have adapted (Chem. Commun. 2012, 48, 2543) this approach for the indium-mediated asymmetric allylation of ketimines 5, which furnished amines 6 with high diastereoselectivity. There has been vigorous research in recent years into the use of NAD(P)H surrogates, especially Hantzsch esters, for biomimetic asymmetric hydrogenations. Yong-Gui Zhou at the Chinese Academy of Sciences showed (J. Am. Chem. Soc. 2012, 134, 2442) that 9,10-dihydrophenanthridine (10) can also serve as an effective “H2” donor for the asymmetric hydrogenation of imines, including 7. Notably, 10 is used catalytically, with regeneration occurring under mild conditions via Ru(II)-based hydrogenation of the phenanthridine 11. A unique approach for asymmetric catalysis has been developed (Nature Chem. 2012, 4, 473) by Takashi Ooi at Nagoya University, who found that ion-paired complexes 14 could serve as effective chiral ligands in the Pd(II)-catalyzed allylation of α-nitrocarboxylates 12. The resulting products 13 are easily reduced to furnish α-amino acid derivatives. Another novel catalytic platform has been employed (J. Am. Chem. Soc. 2012, 134, 7321) for the chiral resolution of 1,2-diols 15 by Kian L. Tan at Boston College. Using the concept of reversible covalent binding, the catalyst 16 was found to selectively silylate a secondary hydroxyl over a primary one, thus leading to the enantioenriched products 17 and 18. Scott E. Denmark at the University of Illinois has applied (Angew. Chem. Int. Ed. 2012, 51, 3236) his chiral Lewis base strategy to the enantioselective vinylogous aldol reaction of N-silyl vinylketene imines 19 to produce γ-hydroxy-α,β-unsaturated nitriles 22. For the preparation of enantioenriched homopropargylic alcohols 25, the asymmetric addition of allenyl metal nucleophiles (e.g., 24) to aldehydes 23 provides a straightforward approach.

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Jack Li, Jie. "Without C—C Bond Cleavage." In Heteroatom Analogues of Aldehydes and Ketones. Georg Thieme Verlag KG, 2004. http://dx.doi.org/10.1055/sos-sd-027-00441.

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Jack Li, Jie. "With C—C Bond Cleavage." In Heteroatom Analogues of Aldehydes and Ketones. Georg Thieme Verlag KG, 2004. http://dx.doi.org/10.1055/sos-sd-027-00449.

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"C–X Bond Formation." In Biocatalysis in Organic Synthesis: The Retrosynthesis Approach. The Royal Society of Chemistry, 2018. http://dx.doi.org/10.1039/bk9781782625308-00179.

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This chapter covers enzyme classes that are capable of catalysing reactions to form carbon–heteroatom bonds, including transaminases, ammonia lyases, hydratases, halohydrin dehalogenases and methyltransferases. The chapter is divided into separate sections, each detailing the formation of a specific carbon–heteroatom bond, including carbon–nitrogen, carbon–oxygen, carbon–halogen and carbon–sulfur bonds. Each section begins with a review of chemical methods of making each bond type, followed by a description of the enzyme classes capable of catalysing each bond formation. The substrate scope of each enzyme class, including its chemo-, regio- and stereoselectivity, is discussed and a general mechanism for the enzyme-catalysed reaction is presented. Where appropriate, strategies for co-factor recycling are also included. This should give the reader a rounded understanding of when and how to carry out C–X bond forming reactions using enzymes.

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Conference papers on the topic "C heteroatom"

1

Mikhailova, Anastasia N., Shadi A. Saeed, Muneer A. Suwaid, et al. "The Influence of Individual Solvents as Hydrogen Donors on the Hydrothermal Conversion of Organic Matter in Shale Rocks of Domanik Deposits." In SPE Europe Energy Conference and Exhibition. SPE, 2024. http://dx.doi.org/10.2118/220047-ms.

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Abstract The influence of individual solvents (ethyl acetate and tetralin) as hydrogen donors on the nature of the conversion of organic matter of low-permeable shale Domanik rock from the Mendym deposits of the Upper Devonian of the Tavel deposit (Tatarstan, Russia) during hydrothermal processes was studied. The experiments were carried out at a temperature of 300°C in a CO2 environment with a water content in the reaction system of a 1:1 to sample of rock and an exposure time of 24 hours. The degree of conversion of kerogen into extractable hydrocarbons was determined by Rock-Eval and therma

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Taylor, P. N., E. Tegelaar, A. S. Al Belushi, and B. Al Fazari. "Understanding Oil Quality Variability In A Carbonate Reservoir Of Oman." In ADIPEC. SPE, 2024. http://dx.doi.org/10.2118/222428-ms.

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Abstract Oil columns within carbonate reservoirs may show very large differences in petroleum fluid compositions, which presents a challenge to reservoir characterization, appraisal, development and production. A single carbonate reservoir in Oman contains oil of highly variable quality; with API gravities between 12 and 25 degrees and dead oil viscosities between 32 cP to 2,480 cP at reservoir temperature. Furthermore, oil samples collected at different times from individual wells also showed variability in their physical properties. An improved understanding of the causes of the observed var

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