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Eastwood JB, Hammarback LA, McRobie MT, Clark IP, Towrie M, Fairlamb IJS, Lynam JM. Correction: Time-resolved infra-red spectroscopy reveals competitive water and dinitrogen coordination to a manganese( i) carbonyl complex. Dalton Trans 2020; 49:7267. [DOI: 10.1039/d0dt90086a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Correction for ‘Time-resolved infra-red spectroscopy reveals competitive water and dinitrogen coordination to a manganese(i) carbonyl complex’ by Jonathan B. Eastwood et al., Dalton Trans., 2020, DOI: 10.1039/c9dt04878b.
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Aucott BJ, Duhme-Klair AK, Moulton BE, Clark IP, Sazanovich IV, Towrie M, Hammarback LA, Fairlamb IJS, Lynam JM. Manganese Carbonyl Compounds Reveal Ultrafast Metal–Solvent Interactions. Organometallics 2019. [DOI: 10.1021/acs.organomet.9b00212] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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Hammarback LA, Robinson A, Lynam JM, Fairlamb IJS. Delineating the critical role of acid additives in Mn-catalysed C-H bond functionalisation processes. Chem Commun (Camb) 2019; 55:3211-3214. [PMID: 30806417 DOI: 10.1039/c9cc00257j] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Addition of co-catalytic Cy2NH to Mn-catalysed C-H bond activation reactions suggests that the conjugate acid, Cy2NH2X, influences catalysis. Here, acids are shown to positively influence C-H bond alkenylation catalysis involving alkynes. For certain types of alkynes an acid additive is critical to catalysis. In stark contrast, acids retard catalysis involving acrylates. [Cy2NH2]X salts also play a key role in thwarting catalyst degradation to manganese clusters. Our findings enable unreactive substrates to be alkenylated.
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Hammarback LA, Robinson A, Lynam JM, Fairlamb IJS. Mechanistic Insight into Catalytic Redox-Neutral C-H Bond Activation Involving Manganese(I) Carbonyls: Catalyst Activation, Turnover, and Deactivation Pathways Reveal an Intricate Network of Steps. J Am Chem Soc 2019; 141:2316-2328. [PMID: 30698423 DOI: 10.1021/jacs.8b09095] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Manganese(I) carbonyl-catalyzed C-H bond functionalization of 2-phenylpyridine and related compounds containing suitable metal directing groups has recently emerged as a potentially useful synthetic methodology for the introduction of various groups to the ortho position of a benzene ring. Preliminary mechanistic studies have highlighted that these reactions could proceed via numerous different species and steps and, moreover, potentially different catalytic cycles. The primary requirement for typically 10 mol % catalyst, oftentimes the ubiquitous precursor catalyst, BrMn(CO)5, has not yet been questioned nor significantly improved upon, suggesting catalytic deactivation may be a serious issue to be understood and resolved. Several critical questions are further raised by the species responsible for providing a source of protons in the protonation of vinyl-manganese(I) carbonyl intermediates. In this study, using a combination of experimental and theoretical methods, we provide comprehensive answers to the key mechanistic questions concerning the Mn(I) carbonyl-catalyzed C-H bond functionalization of 2-phenylpyridine and related compounds. Our results enable the explanation of alkyne substrate dependencies, i.e., internal versus terminal alkynes. We found that there are different catalyst activation pathways for BrMn(CO)5, e.g., terminal alkynes lead to the generation of MnI-acetylide species, whose formation is reminiscent of CuI-acetylide species proposed to be of critical importance in Sonogashira cross-coupling processes. We have unequivocally established that alkyne, 2-phenylpyridine, and water can facilitate hydrogen transfer in the protonation step, leading to the liberation of protonated alkene products.
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Bray JTW, Ford MJ, Karadakov PB, Whitwood AC, Fairlamb IJS. The critical role played by water in controlling Pd catalyst speciation in arylcyanation reactions. REACT CHEM ENG 2019. [DOI: 10.1039/c8re00178b] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Different ‘LnPd(0)’ species play a role in arylcyanation processes, depending on H2O content.
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Scott NWJ, Ford MJ, Schotes C, Parker RR, Whitwood AC, Fairlamb IJS. The ubiquitous cross-coupling catalyst system ‘Pd(OAc)2’/2PPh3 forms a unique dinuclear PdI complex: an important entry point into catalytically competent cyclic Pd3 clusters. Chem Sci 2019. [DOI: 10.1039/c9sc01847f] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Pd3-type clusters generated from Pd(OAc)2/nPPh3, formed via a dinuclear Pd(i) species, exhibit high activity in Suzuki–Miyaura cross-coupling.
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Ward JS, De Palo A, Aucott BJ, Moir JWB, Lynam JM, Fairlamb IJS. A biotin-conjugated photo-activated CO-releasing molecule (biotinCORM): efficient CO-release from an avidin–biotinCORM protein adduct. Dalton Trans 2019; 48:16233-16241. [DOI: 10.1039/c9dt03429c] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A biotinylated carbon monoxide-releasing molecule (BiotinCORM) releases CO by photoirradiation at 400 nm; an avidin–biotinCORM adduct is an effective CO-releasing molecule.
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Aucott BJ, Eastwood JB, Anders Hammarback L, Clark IP, Sazanovich IV, Towrie M, Fairlamb IJS, Lynam JM. Insight into the mechanism of CO-release from trypto-CORM using ultra-fast spectroscopy and computational chemistry. Dalton Trans 2019; 48:16426-16436. [DOI: 10.1039/c9dt03343b] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Photolysis of trypto-CORM results in ultra-fast CO-dissociation and formation of a 16-e triplet followed by solvation.
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Petchey M, Cuetos A, Rowlinson B, Dannevald S, Frese A, Sutton PW, Lovelock S, Lloyd RC, Fairlamb IJS, Grogan G. The Broad Aryl Acid Specificity of the Amide Bond Synthetase McbA Suggests Potential for the Biocatalytic Synthesis of Amides. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201804592] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Petchey M, Cuetos A, Rowlinson B, Dannevald S, Frese A, Sutton PW, Lovelock S, Lloyd RC, Fairlamb IJS, Grogan G. The Broad Aryl Acid Specificity of the Amide Bond Synthetase McbA Suggests Potential for the Biocatalytic Synthesis of Amides. Angew Chem Int Ed Engl 2018; 57:11584-11588. [PMID: 30035356 PMCID: PMC6282839 DOI: 10.1002/anie.201804592] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Revised: 05/22/2018] [Indexed: 11/08/2022]
Abstract
Amide bond formation is one of the most important reactions in pharmaceutical synthetic chemistry. The development of sustainable methods for amide bond formation, including those that are catalyzed by enzymes, is therefore of significant interest. The ATP-dependent amide bond synthetase (ABS) enzyme McbA, from Marinactinospora thermotolerans, catalyzes the formation of amides as part of the biosynthetic pathway towards the marinacarboline secondary metabolites. The reaction proceeds via an adenylate intermediate, with both adenylation and amidation steps catalyzed within one active site. In this study, McbA was applied to the synthesis of pharmaceutical-type amides from a range of aryl carboxylic acids with partner amines provided at 1-5 molar equivalents. The structure of McbA revealed the structural determinants of aryl acid substrate tolerance and differences in conformation associated with the two half reactions catalyzed. The catalytic performance of McbA, coupled with the structure, suggest that this and other ABS enzymes may be engineered for applications in the sustainable synthesis of pharmaceutically relevant (chiral) amides.
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Doherty S, Knight JG, Backhouse T, Abood E, Al-shaikh H, Clemmet AR, Ellison JR, Bourne RA, Chamberlain TW, Stones R, Warren NJ, Fairlamb IJS, Lovelock KRJ. Heteroatom Donor-Decorated Polymer-Immobilized Ionic Liquid Stabilized Palladium Nanoparticles: Efficient Catalysts for Room-Temperature Suzuki-Miyaura Cross-Coupling in Aqueous Media. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800561] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Flanagan L, Steen RR, Saxby K, Klatter M, Aucott BJ, Winstanley C, Fairlamb IJS, Lynam JM, Parkin A, Friman VP. The Antimicrobial Activity of a Carbon Monoxide Releasing Molecule (EBOR-CORM-1) Is Shaped by Intraspecific Variation within Pseudomonas aeruginosa Populations. Front Microbiol 2018; 9:195. [PMID: 29472912 PMCID: PMC5809400 DOI: 10.3389/fmicb.2018.00195] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2017] [Accepted: 01/29/2018] [Indexed: 11/13/2022] Open
Abstract
Carbon monoxide releasing molecules (CORMs) have been suggested as a new synthetic class of antimicrobials to treat bacterial infections. Here we utilized a novel EBOR-CORM-1 ([NEt4][MnBr2(CO)4]) capable of water-triggered CO-release, and tested its efficacy against a collection of clinical Pseudomonas aeruginosa strains that differ in infection-related virulence traits. We found that while EBOR-CORM-1 was effective in clearing planktonic and biofilm cells of P. aeruginosa strain PAO1 in a concentration dependent manner, this effect was less clear and varied considerably between different P. aeruginosa cystic fibrosis (CF) lung isolates. While a reduction in cell growth was observed after 8 h of CORM application, either no effect or even a slight increase in cell densities and the amount of biofilm was observed after 24 h. This variation could be partly explained by differences in bacterial virulence traits: while CF isolates showed attenuated in vivo virulence and growth compared to strain PAO1, they formed much more biofilm, which could have potentially protected them from the CORM. Even though no clear therapeutic benefits against a subset of isolates was observed in an in vivo wax moth acute infection model, EBOR-CORM-1 was more efficient at reducing the growth of CF isolate co-culture populations harboring intraspecific variation, in comparison with efficacy against more uniform single isolate culture populations. Together these results suggest that CORMs could be effective at controlling genetically diverse P. aeruginosa populations typical for natural chronic CF infections and that the potential benefits of some antibiotics might not be observed if tested only against clonal bacterial populations.
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Prendergast AM, Pardo LM, Fairlamb IJS, McGlacken GP. Access to Some C5-Cyclised 2-Pyrones and 2-Pyridones via Direct Arylation; Retention of Chloride as a Synthetic Handle. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700980] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Reay AJ, Hammarback LA, Bray JTW, Sheridan T, Turnbull D, Whitwood AC, Fairlamb IJS. Mild and Regioselective Pd(OAc) 2-Catalyzed C-H Arylation of Tryptophans by [ArN 2]X, Promoted by Tosic Acid. ACS Catal 2017; 7:5174-5179. [PMID: 28824821 PMCID: PMC5557615 DOI: 10.1021/acscatal.6b03121] [Citation(s) in RCA: 72] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2016] [Revised: 06/10/2017] [Indexed: 01/08/2023]
Abstract
![]()
A regioselective
Pd-mediated C–H bond arylation methodology
for tryptophans, utilizing stable aryldiazonium salts, affords C2-arylated
tryptophan derivatives, in several cases quantitatively. The reactions
proceed in air, without base, and at room temperature in EtOAc. The
synthetic methodology has been evaluated and compared against other
tryptophan derivative arylation methods using the CHEM21 green chemistry
toolkit. The behavior of the Pd catalyst species has been probed in
preliminary mechanistic studies, which indicate that the reaction
is operating homogeneously, although Pd nanoparticles are formed during
substrate turnover. The effects of these higher order Pd species on
catalysis, under the reaction conditions examined, appear to be minimal:
e.g., acting as a Pd reservoir in the latter stages of substrate turnover
or as a moribund form (derived from catalyst deactivation). We have
determined that TsOH shortens the induction period observed when [ArN2]BF4 salts are employed with Pd(OAc)2. Pd(OTs)2(MeCN)2 was found to be a superior
precatalyst (confirmed by kinetic studies) in comparison to Pd(OAc)2.
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Aucott BJ, Ward JS, Andrew SG, Milani J, Whitwood AC, Lynam JM, Parkin A, Fairlamb IJS. Redox-Tagged Carbon Monoxide-Releasing Molecules (CORMs): Ferrocene-Containing [Mn(C^N)(CO)4] Complexes as a Promising New CORM Class. Inorg Chem 2017; 56:5431-5440. [DOI: 10.1021/acs.inorgchem.7b00509] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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Ward JS, Morgan R, Lynam JM, Fairlamb IJS, Moir JWB. Toxicity of tryptophan manganese(i) carbonyl (Trypto-CORM), against Neisseria gonorrhoeae. MEDCHEMCOMM 2017; 8:346-352. [PMID: 30108750 PMCID: PMC6072082 DOI: 10.1039/c6md00603e] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Accepted: 12/02/2016] [Indexed: 12/11/2022]
Abstract
The potential for carbon monoxide-releasing molecules (CO-RMs) as antimicrobials represents an exciting prospective in the fight against antibiotic resistance. Trypto-CORM, a tryptophan-containing manganese(i) carbonyl, is toxic against E. coli following photo-activation. Here, we demonstrate that Trypto-CORM is toxic against Neisseria gonorrhoeae in the absence of photoactivation. Trypto-CORM toxicity was reversed by the high CO affinity globin leg-haemoglobin (Leg-Hb), indicating that the toxicity is due to CO release. Release of CO from Trypto-CORM in the dark was also detected with Leg-Hb (but not myoglobin) in vitro. N. gonorrhoeae is more sensitive to CO-based toxicity than other model bacterial pathogens, and may serve as a viable candidate for antimicrobial therapy using CO-RMs.
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Wenzel MN, Owens PK, Bray JTW, Lynam JM, Aguiar PM, Reed C, Lee JD, Hamilton JF, Whitwood AC, Fairlamb IJS. Redox Couple Involving NOx in Aerobic Pd-Catalyzed Oxidation of sp3-C–H Bonds: Direct Evidence for Pd–NO3–/NO2– Interactions Involved in Oxidation and Reductive Elimination. J Am Chem Soc 2017; 139:1177-1190. [DOI: 10.1021/jacs.6b10853] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Ward JS, Bray JTW, Aucott BJ, Wagner C, Pridmore NE, Whitwood AC, Moir JWB, Lynam JM, Fairlamb IJS. Photoactivated Functionizable Tetracarbonyl(phenylpyridine)manganese(I) Complexes as CO-Releasing Molecules: A Direct Suzuki-Miyaura Cross-Coupling on a Thermally Stable CO-RM. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201600775] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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Yahaya NP, Appleby KM, Teh M, Wagner C, Troschke E, Bray JTW, Duckett SB, Hammarback LA, Ward JS, Milani J, Pridmore NE, Whitwood AC, Lynam JM, Fairlamb IJS. Manganese(I)-Catalyzed C-H Activation: The Key Role of a 7-Membered Manganacycle in H-Transfer and Reductive Elimination. Angew Chem Int Ed Engl 2016; 55:12455-9. [PMID: 27603008 PMCID: PMC5113680 DOI: 10.1002/anie.201606236] [Citation(s) in RCA: 99] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2016] [Indexed: 01/14/2023]
Abstract
Manganese‐catalyzed C−H bond activation chemistry is emerging as a powerful and complementary method for molecular functionalization. A highly reactive seven‐membered MnI intermediate is detected and characterized that is effective for H‐transfer or reductive elimination to deliver alkenylated or pyridinium products, respectively. The two pathways are determined at MnI by judicious choice of an electron‐deficient 2‐pyrone substrate containing a 2‐pyridyl directing group, which undergoes regioselective C−H bond activation, serving as a valuable system for probing the mechanistic features of Mn C−H bond activation chemistry.
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Yahaya NP, Appleby KM, Teh M, Wagner C, Troschke E, Bray JTW, Duckett SB, Hammarback LA, Ward JS, Milani J, Pridmore NE, Whitwood AC, Lynam JM, Fairlamb IJS. Manganese(I)-Catalyzed C−H Activation: The Key Role of a 7-Membered Manganacycle in H-Transfer and Reductive Elimination. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201606236] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Aigbirhio FI, Allwein S, Anwar A, Atzrodt J, Audisio D, Badman G, Bakale R, Berthon F, Bragg R, Brindle KM, Bushby N, Campos S, Cant AA, Chan MYT, Colbon P, Cornelissen B, Czarny B, Derdau V, Dive V, Dunscombe M, Eggleston I, Ellis-Sawyer K, Elmore CS, Engstrom P, Ericsson C, Fairlamb IJS, Georgin D, Godfrey SP, He L, Hickey MJ, Huscroft IT, Kerr WJ, Lashford A, Lenz E, Lewinton S, L'Hermite MM, Lindelöf Å, Little G, Lockley WJS, Loreau O, Maddocks S, Marguerit M, Mirabello V, Mudd RJ, Nilsson GN, Owens PK, Pascu SI, Patriarche G, Pimlott SL, Pinault M, Plastow G, Racys DT, Reif J, Rossi J, Ruan J, Sarpaki S, Sephton SM, Simonsson R, Speed DJ, Sumal K, Sutherland A, Taran F, Thuleau A, Wang Y, Waring M, Watters WH, Wu J, Xiao J. Abstracts of the 24th international isotope society (UK group) symposium: synthesis and applications of labelled compounds 2015. J Labelled Comp Radiopharm 2016; 59:175-86. [PMID: 26991121 DOI: 10.1002/jlcr.3377] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2015] [Accepted: 01/11/2016] [Indexed: 11/09/2022]
Abstract
The 24th annual symposium of the International Isotope Society's United Kingdom Group took place at the Møller Centre, Churchill College, Cambridge, UK on Friday 6th November 2015. The meeting was attended by 77 delegates from academia and industry, the life sciences, chemical, radiochemical and scientific instrument suppliers. Delegates were welcomed by Dr Ken Lawrie (GlaxoSmithKline, UK, chair of the IIS UK group). The subsequent scientific programme consisted of oral presentations, short 'flash' presentations in association with particular posters and poster presentations. The scientific areas covered included isotopic synthesis, regulatory issues, applications of labelled compounds in imaging, isotopic separation and novel chemistry with potential implications for isotopic synthesis. Both short-lived and long-lived isotopes were represented, as were stable isotopes. The symposium was divided into a morning session chaired by Dr Rebekka Hueting (University of Oxford, UK) and afternoon sessions chaired by Dr Sofia Pascu (University of Bath, UK) and by Dr Alan Dowling (Syngenta, UK). The UK meeting concluded with remarks from Dr Ken Lawrie (GlaxoSmithKline, UK).
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Reay AJ, Fairlamb IJS. Catalytic C-H bond functionalisation chemistry: the case for quasi-heterogeneous catalysis. Chem Commun (Camb) 2016; 51:16289-307. [PMID: 26439875 DOI: 10.1039/c5cc06980g] [Citation(s) in RCA: 91] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
This feature article examines the potential of heterogeneous Pd species to mediate catalytic C-H bond functionalisation processes employing suitable substrates (e.g. aromatic/heteroaromatic compounds). A focus is placed on the reactivity of supported and non-supported Pd nanoparticle (PdNPs) catalysts, in addition to the re-appropriation of well-established heterogeneous Pd catalysts such as Pd/C. Where possible, reasonable comparisons are made between PdNPs and traditional 'homogeneous' Pd precatalyst sources (which form PdNPs). The involvement of higher order Pd species in traditional cross-coupling processes, such as Mizoroki-Heck, Sonogashira and Suzuki-Miyaura reactions, allows the exemplification of potential future topics for study in the area of catalytic C-H bond functionalisation processes.
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Younesi Y, Nasiri B, BabaAhmadi R, Willans CE, Fairlamb IJS, Ariafard A. Theoretical rationalisation for the mechanism of N-heterocyclic carbene-halide reductive elimination at CuIII, AgIII and AuIII. Chem Commun (Camb) 2016; 52:5057-60. [DOI: 10.1039/c6cc01299j] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
A dichotomy in carbon versus bromide reductive elimination in CuIII–NHC complexes is rationalized by computational methods (DFT).
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Ronson TO, Burns MJ, Voelkel MHH, Evans KJ, Lynam JM, Taylor RJK, Fairlamb IJS. Total Synthesis and Stereochemical Revision of Phacelocarpus 2‐Pyrone A. Chemistry 2015; 21:18905-9. [DOI: 10.1002/chem.201504089] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2015] [Indexed: 11/08/2022]
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50
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Milani J, Pridmore NE, Whitwood AC, Fairlamb IJS, Perutz RN. The Role of Fluorine Substituents in the Regioselectivity of Intramolecular C–H Bond Functionalization of Benzylamines at Palladium(II). Organometallics 2015. [DOI: 10.1021/acs.organomet.5b00608] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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