Relevant bibliographies by topics / Breslow intermediate

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Academic literature on the topic 'Breslow intermediate'

Author: Grafiati
Published: 9 August 2021
Last updated: 22 June 2022

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Journal articles on the topic "Breslow intermediate"

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Maji, Biplab, and Herbert Mayr. "Struktur und Reaktivität O-methylierter Breslow-Intermediate." Angewandte Chemie 124, no. 41 (September 11, 2012): 10554–58. http://dx.doi.org/10.1002/ange.201204524.

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Bhunia, Anup, Shridhar Thorat, Rajesh G. Gonnade, and Akkattu T. Biju. "Reaction of N-heterocyclic carbenes with chalcones leading to the synthesis of deoxy-Breslow intermediates in their oxidized form." Chemical Communications 51, no. 71 (2015): 13690–93. http://dx.doi.org/10.1039/c5cc05800g.

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Presented herein is the reaction of N-heterocyclic carbenes (NHCs) with chalcones resulting in the isolation of the deoxy-Breslow intermediate in the oxidized form. In addition, the tetrahedral intermediate formed by the initial 1,4-addition of NHC to chalcones has also been isolated.
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Rehbein, Julia, Stephanie-M. Ruser, and Jenny Phan. "NHC-catalysed benzoin condensation – is it all down to the Breslow intermediate?" Chemical Science 6, no. 10 (2015): 6013–18. http://dx.doi.org/10.1039/c5sc02186c.

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The NHC-catalysed benzoin condensation has been studied mechanistically by a combination of experimental and computational chemistry. The presented EPR-spectroscopic and computational data provide evidence for a radical pair as a potential second key-intermediate that is derived from the Breslow-intermediate via an SET process.
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Pareek, Monika, Yernaidu Reddi, and Raghavan B. Sunoj. "Tale of the Breslow intermediate, a central player in N-heterocyclic carbene organocatalysis: then and now." Chemical Science 12, no. 23 (2021): 7973–92. http://dx.doi.org/10.1039/d1sc01910d.

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Molecular insights on the formation, detection, and even isolation of the Breslow intermediate, which is the most important species in N-heterocyclic carbene (NHC) catalysis, as obtained from experimental and computational studies, are presented.
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DiRocco, Daniel A., Kevin M. Oberg, and Tomislav Rovis. "Isolable Analogues of the Breslow Intermediate Derived from Chiral Triazolylidene Carbenes." Journal of the American Chemical Society 134, no. 14 (March 28, 2012): 6143–45. http://dx.doi.org/10.1021/ja302031v.

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Nandi, Ashim, Zayed Alassad, Anat Milo, and Sebastian Kozuch. "Quantum Tunneling on Carbene Organocatalysis: Breslow Intermediate Formation via Water-Bridges." ACS Catalysis 11, no. 24 (November 29, 2021): 14836–41. http://dx.doi.org/10.1021/acscatal.1c04475.

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Bai, Yaguang, Wei Lin Leng, Yongxin Li, and Xue-Wei Liu. "A highly efficient dual catalysis approach for C-glycosylation: addition of (o-azaaryl)carboxaldehyde to glycals." Chem. Commun. 50, no. 87 (2014): 13391–93. http://dx.doi.org/10.1039/c4cc06111j.

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Dual catalysis by concurrent activation of glycals and (O-azaaryl)-carboxaldehydes using palladium and N-heterocyclic carbene has been developed. This activation through the formation of the Breslow intermediate and a π-allyl Pd complex is a novel and efficient approach to yield C-glycosides with yields up to 85%.
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8

Sawama, Yoshinari, Yuya Miki, and Hironao Sajiki. "N-Heterocyclic Carbene Catalyzed Deuteration of Aldehydes in D2O." Synlett 31, no. 07 (March 3, 2020): 699–702. http://dx.doi.org/10.1055/s-0040-1707993.

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An N-heterocyclic carbene (NHC)-catalyzed direct deuteration of aldehydes in a mixed solvent of deuterium oxide (D2O) and cyclopentyl methyl ether was established. The present deuteration is possibly initiated by the formation of a Breslow intermediate from the aldehyde and the NHC, with subsequent trapping by D2O providing the monodeuterated aldehyde.
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Paul, Mathias, Panyapon Sudkaow, Alina Wessels, Nils E. Schlörer, Jörg‐M Neudörfl, and Albrecht Berkessel. "Breslow‐Intermediate aromatischer N‐heterocyclischer Carbene (Benzimidazolin‐2‐ylidene, Thiazolin‐2‐ylidene)." Angewandte Chemie 130, no. 27 (July 2, 2018): 8443–48. http://dx.doi.org/10.1002/ange.201801676.

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10

Wong, Sandra L., Mark B. Faries, Erin B. Kennedy, Sanjiv S. Agarwala, Timothy J. Akhurst, Charlotte Ariyan, Charles M. Balch, et al. "Sentinel Lymph Node Biopsy and Management of Regional Lymph Nodes in Melanoma: American Society of Clinical Oncology and Society of Surgical Oncology Clinical Practice Guideline Update." Journal of Clinical Oncology 36, no. 4 (February 1, 2018): 399–413. http://dx.doi.org/10.1200/jco.2017.75.7724.

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Purpose To update the American Society of Clinical Oncology (ASCO)-Society of Surgical Oncology (SSO) guideline for sentinel lymph node (SLN) biopsy in melanoma. Methods An ASCO-SSO panel was formed, and a systematic review of the literature was conducted regarding SLN biopsy and completion lymph node dissection (CLND) after a positive sentinel node in patients with melanoma. Results Nine new observational studies, two systematic reviews, and an updated randomized controlled trial of SLN biopsy, as well as two randomized controlled trials of CLND after positive SLN biopsy, were included. Recommendations Routine SLN biopsy is not recommended for patients with thin melanomas that are T1a (nonulcerated lesions < 0.8 mm in Breslow thickness). SLN biopsy may be considered for thin melanomas that are T1b (0.8 to 1.0 mm Breslow thickness or < 0.8 mm Breslow thickness with ulceration) after a thorough discussion with the patient of the potential benefits and risk of harms associated with the procedure. SLN biopsy is recommended for patients with intermediate-thickness melanomas (T2 or T3; Breslow thickness of > 1.0 to 4.0 mm). SLN biopsy may be recommended for patients with thick melanomas (T4; > 4.0 mm in Breslow thickness), after a discussion of the potential benefits and risks of harm. In the case of a positive SLN biopsy, CLND or careful observation are options for patients with low-risk micrometastatic disease, with due consideration of clinicopathological factors. For higher-risk patients, careful observation may be considered only after a thorough discussion with patients about the potential risks and benefits of foregoing CLND. Important qualifying statements outlining relevant clinicopathological factors and details of the reference patient populations are included within the guideline. Additional information is available at www.asco.org/melanoma-guidelines and www.asco.org/guidelineswiki .
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Dissertations / Theses on the topic "Breslow intermediate"

1

Mejia, Fajardo Angelica. "Nouveau type de paires de Lewis frustrées (FLP) pour l'activation intramoléculaire diastéréoselective des aldéhydes." Thesis, Toulouse 3, 2021. http://www.theses.fr/2021TOU30273.

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Les systèmes de paires de Lewis frustrées (FLP) constituent un nouveau concept en chimie verte en raison de leur capacité à fonctionner comme un catalyseur sans métal pour l'activation de composés tels que l'hydrogène, le dioxyde de carbone, les aldéhydes et toutes sortes de petites molécules. Ce document vise à étudier la réactivité et l'utilisation potentielle d'une molécule en tant que FLP masquée qui, dans ses caractéristiques internes, comprend une base de Lewis non classique à base de carbone qui ne provient pas d'un carbène, et un borane comme acide de Lewis (composé 1). Trois parties ont été développées dans cette stratégie d'analyse. La première était l'étude de la réactivité de divers types de petites molécules sur le système. La deuxième partie consistait à comprendre la réaction de l'adduit du benzaldéhyde, en identifiant que l'utilisation de 1 permettait d'accéder à un intermédiaire de Breslow O-borylé comme système FLP pour le produit. Dans la troisième partie, la réaction de l'adduit du benzaldéhyde a été prise comme modèle de référence pour développer une méthodologie pouvant être étendue à d'autres aldéhydes. Il a été prouvé que le composé 1: est un nouveau système FLP intramoléculaire masqué avec des caractéristiques originales; est chimiosélectif pour activer les aldéhydes; a une diastéréosélectivité sans précédent, et cette étude apporte un nouvel éclairage sur la cinétique et le mécanisme de la réaction
Frustrated Lewis Pairs systems (FLP) are a new concept in green chemistry due to their ability to function as free metal catalyst activation such as hydrogen, carbon dioxide, aldehydes, and all kinds of small molecules. The present document seeks to study the reactivity and potential use of a molecule as a masked FLP that, in its inner features, includes a nonclassical carbon-based Lewis base that is not coming from a carbene, and a borane as Lewis acid (compound 1). Three parts were developed into this analysis strategy. The first was the reactivity study of various small molecule types on the system. The second part was to comprehend the benzaldehyde adduct reaction, identifying that the use of 1 enabled access to an O-Borylated Breslow intermediate as an FLP system for the product. In the third part, benzaldehyde adduct reaction was taken as a reference model to develop a methodology to be extended to other aldehydes. It has been proved that compound 1: is a novel intramolecular masked FLP system with unique features; is chemoselective to activate aldehydes; has unprecedented diastereoselectivity, and this study brings original insights about the kinetics and the reaction mechanism
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Lóška, Ladislav. "Enantioselektivní syntéza chirálních cyklohexenonů za použití NHC katalýzy." Master's thesis, 2021. http://www.nusl.cz/ntk/nusl-449004.

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This work deals with the enantioselective synthesis of chiral cyclohexenones from substituted 4-nitroisoxazoles and α-bromo-α,β-unsaturated aldehydes using of N-heterocyclic carbenes (NHC) as organocatalysts. The work includes the preparation of commercially unavailable NHC-precursors and the synthesis of starting materials, substituted 4-nitroisoxazoles and α-bromo-α,β-unsaturated aldehydes. The second part of the work deals with the optimization of reaction conditions of the enantioselective synthesis of chiral cyclohexenones, proceeding via an azolium dienolate intermediate, and the detailed substrate scope screening.
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Books on the topic "Breslow intermediate"

1

Morrison, Benedict. Complicating Articulation in Art Cinema. Oxford University Press, 2021. http://dx.doi.org/10.1093/oso/9780192894069.001.0001.

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Complicating Articulation in Art Cinema argues that art cinema, unlike classical film, draws attention to its disjointed, multi-parted form, but that criticism has too frequently sought to explain this complexity away by stitching the parts together in totalizing readings. This stitching together has often relied on the assumption that complicated character explains articulated form and that the solution to art cinema’s puzzles lies in interpreting each film as the expression of a focalizing character’s internal disturbance. This book challenges this assumption. It argues that the attempt to explain formal complexity through this character-centric approach reduces formal achievements and enigmatic characters to inadequate approximations of one another. Reference to character cannot fully tame unschematic and unpredictable combinations of—and collisions between—contradictory levels of narration, clashing styles, discontinuously edited shots, jarring allusions, dislocated genre signifiers, and intermedial elements. Through close analyses of films by Roberto Rossellini, Robert Bresson, Luis Buñuel, Terence Davies, Peter Greenaway, and Kelly Reichardt, Complicating Articulation in Art Cinema offers an ethics of criticism that suggests that the politics of art cinema’s eccentric form are limited by character-centred readings. Each of the featured films presents inarticulate or muted characters, whose emotional and intellectual lives are unknowable, further complicating the relationship between character and form. This book argues that, by acknowledging this resistance to interpretation, critics can think in new ways about art cinema’s interrogation of the possibilities of knowledge.
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Journal articles
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