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1. |
Record Nr. |
UNINA9910375688003321 |
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Autore |
Benediktsson Jon Atli |
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Titolo |
Proceedings of the 5th ACM International Conference on Nanoscale Computing and Communication / / Jon Atli Benediktsson |
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Pubbl/distr/stampa |
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New York NY : , : ACM, , 2018 |
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Descrizione fisica |
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1 online resource (310 pages) |
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Materiale a stampa |
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Livello bibliografico |
Monografia |
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Sommario/riassunto |
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The conference is the fifth of a series that is held annually in order to develop and foster a new communication and computing paradigm based on the nanoscale. Continuing advancements in nanotechnology have led to developments of novel materials and components that can be assembled into nanomachines. These low-cost and low-power nanomachines from man-made components, integrate basic sensing, actuating and computing capabilities. However, natural cells artificially programmed through synthetic biology encompass the same capabilities in order to perform certain functionalities. While all these innovative results provide new opportunities, the miniature size of nanomachines also implies that they have limited functionalities. Integrating computing, communication as well as networking capabilities in these nanomachines can further expand their functionalities and lead to novel applications. However, traditional computing and communication paradigms are not applicable due to the challenges posed by the physical laws governing the nanoscale regime, and novel methods are required to realize nano networks. The corresponding scientific and technological advances will lead to enabling technologies supporting a more reliable and robust design of nanomachines and their integration as functional components into networks and systems. The resulting improvements in our ability to transmit information to and from nanomachines, and implement control within themselves, will open new opportunities in the field of |
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medicine, biotechnology, pharmaceuticals, industrial applications, as well as defense and security. Therefore, the aim of ACM NanoCom is to bring together researchers with diverse background including communication engineering and networking, computer science, information theory, synthetic biology, physics, mathematics, materials science, nanotechnology, as well as nanobioscience, in order to realize this vision and further advance the field. |
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2. |
Record Nr. |
UNINA9910767551303321 |
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Titolo |
Free-Radical Synthesis and Functionalization of Heterocycles / / edited by Yannick Landais |
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Pubbl/distr/stampa |
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Cham : , : Springer International Publishing : , : Imprint : Springer, , 2018 |
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ISBN |
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Edizione |
[1st ed. 2018.] |
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Descrizione fisica |
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1 online resource (VII, 352 p. 454 illus., 18 illus. in color.) |
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Collana |
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Topics in Heterocyclic Chemistry, , 1861-9282 ; ; 54 |
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Disciplina |
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Organic chemistry |
Catalysis |
Green chemistry |
Organic Chemistry |
Green Chemistry |
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Nota di contenuto |
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Photocatalyzed Formation of Heterocycles -- C–H activation via radical processes using photo-excited ketones -- Free Radicals in Heterocycle Functionalization -- Heteroatom-Centred Radicals for the Synthesis of Heterocyclic Compounds -- Metal-Mediated Oxidative Radical Processes for the Synthesis of Heterocycles -- Reductive Electron Transfer in the Synthesis of Heterocycles -- Synthesis of Nitrogen-Containing Heterocycles via Imidoyl or Iminyl Radical Intermediates -- Radical cascades in the total synthesis of complex naturally occurring heterocycles. |
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This volume describes the recent developments in the free-radical mediated synthesis and elaboration of heterocycles. The first chapter, dealing with radical cascade processes illustrates the power and the beauty of radical chemistry with some striking examples of total synthesis of complex natural heterocycles. As organic chemists strive towards sustainability, radical chemistry has recently seen major advances and efforts in this direction, including C-H activation of arenes and unactivated alkyl groups. Photochemical activation, for a long time the preferred mode of activation in radical chemistry has also seen an unexpected revival with the advent of visible light metal- and organocatalyzed photoredox processes. A survey of these emerging areas is provided along with the concepts at the origin of these developments. The venerable Minisci reaction allows for direct access to functionalized heterocycles. This process has lately seen an interesting renaissance and is discussed in this volume. Addition of heteroatom-centered radicals onto unsaturated systems constitutes another powerful method to construct heterocycles. Examples of such a strategy are proposed along with the formation of various heterocycles relying on homolytic substitution at sulfur, phosphorus and selenium. Additionally free-radical functionalization of reactive functional groups including isonitriles, isothiocyanates and related unsaturated systems which offer a straightforward route towards useful aromatic and non-aromatic heterocycles are discussed. Finally, as metals are able to trigger single electron transfer both in reductive and oxidative modes this provides another possibility for the synthesis of heterocycles. Significant research efforts have focussed on the use of samarium, copper and other metals to access a broad variety of heterocycles in a single pot process, starting from readily available raw material. Examples and mechanistic insights are discussed by experts in this area. |
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