Showing 521 - 540 results of 558 for search '"boronic acid"', query time: 0.15s Refine Results
  1. 521

    A facile synthesis of new 5-aryl-thiophenes bearing sulfonamide moiety via Pd(0)-catalyzed Suzuki–Miyaura cross coupling reactions and 5-bromothiophene-2-acetamide: As potent ureas... by Mnaza Noreen, Nasir Rasool, Yasmeen Gull, Faiz-ul-Hassan Nasim, Ameer Fawad Zahoor, Asma Yaqoob, Shazia Kousar, Muhammad Zubair, Iftikhar Hussain Bukhari, Usman Ali Rana

    Published 2017-01-01
    “…This method of synthesis involved the reactions of various aryl boronic acids and esters with 5-bromthiophene-2-sulfonamide (2) under mild and suitable temperature conditions. …”
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    Article
  2. 522

    Amino Acid-Based Boron Carriers in Boron Neutron Capture Therapy (BNCT) by Juulia Järvinen, Herkko Pulkkinen, Jarkko Rautio, Juri M. Timonen

    Published 2023-11-01
    “…The boronated amino acids synthesized thus far for BNCT investigations can be classified into two categories based on the source of boron: boronic acids or carboranes. Amino acid-based boron carriers, employed in the context of BNCT treatment, demonstrate significant potential in the treatment of challenging tumors, such as those located in the brain. …”
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    Article
  3. 523

    N-Arylation of Protected and Unprotected 5-Bromo-2-aminobenzimidazole as Organic Material: Non-Linear Optical (NLO) Properties and Structural Feature Determination through Computat... by Mubeen Mumtaz, Nasir Rasool, Gulraiz Ahmad, Naveen Kosar, Umer Rashid

    Published 2021-11-01
    “…Here, in this study, Cu(II)-catalyzed selective N-arylation of 2-aminobenzimidazoles derivatives were achieved in the presence of different bases Et<sub>3</sub>N/TMEDA, solvents DCM/MeOH/H<sub>2</sub>O, and various aryl boronic acids under open atmospheric conditions. Two different copper-catalyzed pathways were selected for N-arylation in the presence of active nucleophilic sites, providing a unique tool for the preparation of NLO materials, C-NH (aryl) derivatives of 2-aminobenzimidazoles with protection and without protection of NH<sub>2</sub> group. …”
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    Article
  4. 524

    Bioinspired Pyrano[2,3-<i>f</i>]chromen-8-ones: Ring C-Opened Analogues of Calanolide A: Synthesis and Anti-HIV-1 Evaluation by Igor A. Khalymbadzha, Ramil F. Fatykhov, Ilya I. Butorin, Ainur D. Sharapov, Anastasia P. Potapova, Nibin Joy Muthipeedika, Grigory V. Zyryanov, Vsevolod V. Melekhin, Maria D. Tokhtueva, Sergey L. Deev, Marina K. Kukhanova, Nataliya N. Mochulskaya, Mikhail V. Tsurkan

    Published 2024-01-01
    “…Three directions for the synthesis were explored: reaction of 5-hydroxy-2,2-dimethyl-10-propyl-2<i>H</i>,8<i>H</i>-pyrano[2,3-<i>f</i>]chromen-8-one with (i) 1,2,4-triazines, (ii) sulfonylation followed by Suzuki cross-coupling with (het)aryl boronic acids, and (iii) aminomethylation by Mannich reaction. …”
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    Article
  5. 525

    The Aggregation of Boron on the Tissues of Gold Fish (Carassius auratus Linnaeus, 1758) by Tuncer Okan Genç, Burak Evren İnanan, Murat Yabanlı, Fevzi Yılmaz

    Published 2015-03-01
    “…The water-borne boron treatments were applied as boron acid concentration of 1 mg/L, 10 mg/L and 20 mg/L in the aquarium water, while the food-borne boron treatments were prepared food contained the defined levels of boron (1 mg/kg, 5 mg/kg and 10 mg/kg) as boric acid. …”
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    Article
  6. 526

    Rhodium-catalysed carbon-carbon bond formation and carbon-sulfur bond functionalisation by Bouisseau, A

    Published 2017
    “…</p> <p><b>Chapter 4</b> documents the efforts towards the development of a rhodium-catalysed cross-coupling reaction with alkenyl sulfides and boronic acids via C-S bond activation. This study explores both a tether-free and a traceless tether approach.…”
    Thesis
  7. 527

    A CIPS risk evaluation methodology applicable for PWR by MENG Shuqi, HU Yisong, LI Changying, RUAN Tianming, LIAO Jiapeng

    Published 2021-09-01
    “…At a certain level of CRUD, boron acid will precipitate and depress local nuclear power, causing CRUD induced power shift (CIPS) incident, however, the operation data of reactors that have undergone CIPS indicate that CRUD thickness is not the only factor affecting CIPS.PurposeThis study aims to evaluate the CIPS risk of PWR more scientifically by establishing an evaluation methodology that comprehensively considers CRUD characteristics and thermal-hydraulic condition.MethodsBased on the internal mass transfer mechanism of the porous media, a model which could simulate boron deposition process inside CRUD was established by combining the consideration of CRUD morphology. …”
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    Article
  8. 528

    Chemical Tuning of Fibers Drawn from Extensible Hyaluronic Acid Networks by Chu, Crystal K., Joseph, Alby J., Limjoco, Matthew D., Yang, Jiawei, Bose, Suman, Thapa, Lavanya S., Langer, Robert S, Anderson, Daniel Griffith

    Published 2021
    “…Hyaluronic acid (HA) forms dynamic cross-links with branched polyethylene glycol polymers end-functionalized with boronic acids of varied structure to produce extensible polymer networks. …”
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    Article
  9. 529

    Effects of Boron-Containing Compounds on Liposoluble Hormone Functions by Elizabeth Estevez-Fregoso, Ahmet Kilic, Diana Rodríguez-Vera, Luis E. Nicanor-Juárez, C. Elena M. Romero-Rizo, Eunice D. Farfán-García, Marvin A. Soriano-Ursúa

    Published 2023-02-01
    “…Boron-containing compounds (BCC), particularly boronic acids and derivatives, are being increasingly tested as diagnostic and therapeutic agents. …”
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    Article
  10. 530

    Design, Synthesis and Assay of Novel Methylxanthine–Alkynylmethylamine Derivatives as Acetylcholinesterase Inhibitors by Danila V. Reshetnikov, Igor D. Ivanov, Dmitry S. Baev, Tatyana V. Rybalova, Evgenii S. Mozhaitsev, Sergey S. Patrushev, Valentin A. Vavilin, Tatyana G. Tolstikova, Elvira E. Shults

    Published 2022-12-01
    “…Suzuki–Miyaura cross-coupling reactions of 8-chlorocaffeine with aryl(hetaryl)boronic acids, the CuAAC reaction of 8-ethynylcaffeine with several azides, and the copper(I) catalyzed one-pot three-component reaction (A<sup>3</sup>-coupling) of 8-ethynylcaffeine, 1-(prop-2-ynyl)-, or 7-(prop-2-ynyl)-dimethylxanthines with formaldehyde and secondary amines were the main approaches for the synthesis of substituted methylxanthine derivatives (yield 53–96%). …”
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    Article
  11. 531

    [¹⁸F]Difluorocarbene for positron emission tomography by Sap, JBI, Meyer, CF, Ford, J, Straathof, NJW, Dürr, AB, Lelos, MJ, Paisey, SJ, Mollner, TA, Hell, SM, Trabanco, AA, Genicot, C, Am Ende, CW, Paton, RS, Tredwell, M, Gouverneur, V

    Published 2022
    “…Versatility is demonstrated with multiple [<sup>18</sup>F]difluorocarbene based reactions including O&ndash;H, S&ndash;H and N&ndash;H insertions, and cross-couplings that harness the reactivity of ubiquitous functional groups such as (thio)phenols,&nbsp;<em>N</em>-heteroarenes, and aryl boronic acids that are easy to install. Impact is illustrated with the labelling of highly complex and functionalised biologically relevant molecules and radiotracers.…”
    Journal article
  12. 532

    Reactions of allenylpalladium intermediates in organic synthesis by Daniels, DSB

    Published 2013
    “…</p> <p>The coupling of a variety of propargylic electrophiles with aryl boronic acids to form allenes is examined in Chapter 2. …”
    Thesis
  13. 533

    Synthesis of Computationally Designed 2,5(6)-Benzimidazole Derivatives via Pd-Catalyzed Reactions for Potential <i>E. coli</i> DNA Gyrase B Inhibition by Rafael T. Aroso, Rita C. Guedes, Mariette M. Pereira

    Published 2021-03-01
    “…The challenging functionalization of the 5(6)-position was carried out via palladium-catalyzed Suzuki–Miyaura and Buchwald-Hartwig amination cross-coupling reactions between <i>N</i>-protected-5-bromo-2-nitrophenyl-benzimidazole and aryl boronic acids or sulfonylanilines, with yields up to 81%. …”
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    Article
  14. 534

    The understanding and development of rhodium-catalysed asymmetric cross-coupling reactions by Van Dijk, L

    Published 2021
    “…Our group has previously developed an asymmetric Rh-catalysed Suzuki-Miyaura cross-coupling of racemic allylic halides and boronic acids. Based on a combination of experimental and computational studies, a mechanism is proposed for this highly enantioselective transformation. …”
    Thesis
  15. 535

    Catalytic asymmetric approaches to nitrogen-containing bicycles by Zhang, Y

    Published 2023
    “…</p> <p>In Chapter 3, we investigated the asymmetric Rh-catalysed arylation reactions between dehydroquinuclidine-derived substrates and aryl boronic acids. Various substrates including dehydroquinuclidine, its N-oxide derivative, and its nitrogen-borane complex were synthesised and tested subject to different conditions under rhodium-catalysis. …”
    Thesis
  16. 536

    Facile Synthesis of 5-Aryl-<i>N</i>-(pyrazin-2-yl)thiophene-2-carboxamides via Suzuki Cross-Coupling Reactions, Their Electronic and Nonlinear Optical Properties through DFT Calcul... by Gulraiz Ahmad, Nasir Rasool, Adeel Mubarik, Ameer Fawad Zahoor, Muhammad Ali Hashmi, Muhammad Zubair, Muhammad Bilal, Mohamed Hussien, Muhammad Saeed Akhtar, Sajjad Haider

    Published 2021-12-01
    “…Synthesis of 5-aryl-<i>N</i>-(pyrazin-2-yl)thiophene-2-carboxamides (<b>4a</b>–<b>4n</b>) by a Suzuki cross-coupling reaction of 5-bromo-<i>N</i>-(pyrazin-2-yl)thiophene-2-carboxamide (<b>3</b>) with various aryl/heteroaryl boronic acids/pinacol esters was observed in this article. …”
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    Article
  17. 537
  18. 538
  19. 539

    Applications of rhodium-catalysed hydroacylation in heterocycle synthesis by Majhail, M

    Published 2016
    “…The pyrroles are exploited in further modifications to access fully substituted heteroaromatic systems or in a three-component coupling of aldehydes, propargylic amines and boronic acids or alkynes to access 'traceless' pyrrole rings. …”
    Thesis
  20. 540

    Dynamic combinatorial mass spectrometry for 2-oxoglutarate oxygenase inhibition by Demetriades, M

    Published 2013
    “…</p> <p>The hypoxia inducible factor hydroxylase, prolyl hydroxylase domain 2 (PHD2), was then used as the model enzyme for the development of a novel DCMS approach employing the reversible reaction of boronic acids with diols to form boronate esters. The ‘boronate’ DCMS method was used to identify pyridyl- substituted lead compounds. …”
    Thesis