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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...
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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522
Amino Acid-Based Boron Carriers in Boron Neutron Capture Therapy (BNCT)
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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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...
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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524
Bioinspired Pyrano[2,3-<i>f</i>]chromen-8-ones: Ring C-Opened Analogues of Calanolide A: Synthesis and Anti-HIV-1 Evaluation
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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525
The Aggregation of Boron on the Tissues of Gold Fish (Carassius auratus Linnaeus, 1758)
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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526
Rhodium-catalysed carbon-carbon bond formation and carbon-sulfur bond functionalisation
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 -
527
A CIPS risk evaluation methodology applicable for PWR
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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528
Chemical Tuning of Fibers Drawn from Extensible Hyaluronic Acid Networks
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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529
Effects of Boron-Containing Compounds on Liposoluble Hormone Functions
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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530
Design, Synthesis and Assay of Novel Methylxanthine–Alkynylmethylamine Derivatives as Acetylcholinesterase Inhibitors
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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531
[¹⁸F]Difluorocarbene for positron emission tomography
Published 2022“…Versatility is demonstrated with multiple [<sup>18</sup>F]difluorocarbene based reactions including O–H, S–H and N–H insertions, and cross-couplings that harness the reactivity of ubiquitous functional groups such as (thio)phenols, <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 -
532
Reactions of allenylpalladium intermediates in organic synthesis
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 -
533
Synthesis of Computationally Designed 2,5(6)-Benzimidazole Derivatives via Pd-Catalyzed Reactions for Potential <i>E. coli</i> DNA Gyrase B Inhibition
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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534
The understanding and development of rhodium-catalysed asymmetric cross-coupling reactions
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 -
535
Catalytic asymmetric approaches to nitrogen-containing bicycles
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 -
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...
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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537
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538
Late transition metal catalyzed C-N and C-C bond forming reactions
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Thesis -
539
Applications of rhodium-catalysed hydroacylation in heterocycle synthesis
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 -
540
Dynamic combinatorial mass spectrometry for 2-oxoglutarate oxygenase inhibition
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