1
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Del Vecchio A, Rosadoni E, Ballerini L, Cuzzola A, Lipparini F, Ronchi P, Guariento S, Biagetti M, Lessi M, Bellina F. Transition Metal-Driven Selectivity in Direct C-H Arylation of Imidazo[2,1-b]Thiazole. ChemistryOpen 2024:e202400180. [PMID: 39051713 DOI: 10.1002/open.202400180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2024] [Indexed: 07/27/2024] Open
Abstract
A selective direct arylation of the different Csp2-H bonds of imidazo[2,1-b]thiazole with (hetero) aryl halides can be achieved simply by switching from a palladium catalyst system to the use of stoichiometric amounts of copper. The observed selectivity, also rationalized by DFT calculations, can be explained by a change in the mechanistic pathways between electrophilic palladation and base-promoted C-H metalation.
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Affiliation(s)
- Antonio Del Vecchio
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via Giuseppe Moruzzi, 13, 56124, Pisa, Italy
| | - Elisabetta Rosadoni
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via Giuseppe Moruzzi, 13, 56124, Pisa, Italy
| | - Lorenzo Ballerini
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via Giuseppe Moruzzi, 13, 56124, Pisa, Italy
| | - Angela Cuzzola
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via Giuseppe Moruzzi, 13, 56124, Pisa, Italy
| | - Filippo Lipparini
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via Giuseppe Moruzzi, 13, 56124, Pisa, Italy
| | - Paolo Ronchi
- Chemistry Research and Drug Design, Chiesi Farmaceutici S.p.A, 43122, Parma, Italy
| | - Sara Guariento
- Chemistry Research and Drug Design, Chiesi Farmaceutici S.p.A, 43122, Parma, Italy
| | - Matteo Biagetti
- Chemistry Research and Drug Design, Chiesi Farmaceutici S.p.A, 43122, Parma, Italy
| | - Marco Lessi
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via Giuseppe Moruzzi, 13, 56124, Pisa, Italy
| | - Fabio Bellina
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via Giuseppe Moruzzi, 13, 56124, Pisa, Italy
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2
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Gu C, So CM. Regio- and Chemoselective Palladium-Catalyzed Additive-Free Direct C─H Functionalization of Heterocycles with Chloroaryl Triflates Using Pyrazole-Alkyl Phosphine Ligands. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2309192. [PMID: 38482750 DOI: 10.1002/advs.202309192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 01/26/2024] [Indexed: 06/06/2024]
Abstract
A series of new pyrazole-alkyl phosphine ligands with varying cycloalkyl ring sizes that enable additive-free regio- and chemoselective C─H arylation of heterocycles are reported. Excellent α/β selectivity of various heterocycles such as benzo[b]thiophene, thiophene, furan, benzofuran, and thiazole can be achieved using these ligands, along with excellent chemoselectivity of C─Cl over C─OTf of chloroaryl triflates. Mechanistic studies supported by both experimental findings and density functional theory calculations indicate that the pyrazole phosphine ligands with optimal ring sizes allow the reaction to proceed with a lower energy barrier via a concerted metalation-deprotonation pathway.
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Affiliation(s)
- Changxue Gu
- State Key Laboratory of Chemical Biology and Drug Discovery and Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, P. R. China
| | - Chau Ming So
- State Key Laboratory of Chemical Biology and Drug Discovery and Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, P. R. China
- The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen, 518000, P. R. China
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3
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Rosadoni E, Bombonato E, Del Vecchio A, Guariento S, Ronchi P, Bellina F. Direct Decarboxylative C-2 Alkylation of Azoles through Minisci-Type Coupling. J Org Chem 2023; 88:14236-14241. [PMID: 37729603 DOI: 10.1021/acs.joc.3c01625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/22/2023]
Abstract
This note discusses the application of a Minisci-type reaction for the direct alkylation of azoles with carboxylic acids as radical precursors. Different reaction conditions were investigated to achieve high yield of the desired products, focusing on acid strength and solvent screening. Moreover, the reactivity of imidazoles with various carboxylic acids was investigated, showing good yield for most cases. The study reveals the potential of this approach for late-stage functionalization in drug discovery.
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Affiliation(s)
- Elisabetta Rosadoni
- Department of Chemistry and Industrial Chemistry, University of Pisa, Via Moruzzi 13, 56124 Pisa, Italy
| | - Elena Bombonato
- Department of Chemistry "Giacomo Ciamician", Alma Mater Studiorum - University of Bologna, Via Selmi, 2, 40126 Bologna, Italy
| | - Antonio Del Vecchio
- Department of Chemistry and Industrial Chemistry, University of Pisa, Via Moruzzi 13, 56124 Pisa, Italy
| | - Sara Guariento
- Chemistry Research and Drug Design, Chiesi Farmaceutici S.p.A., Centro Ricerche, Largo Belloli 11/A, 43122 Parma, Italy
| | - Paolo Ronchi
- Chemistry Research and Drug Design, Chiesi Farmaceutici S.p.A., Centro Ricerche, Largo Belloli 11/A, 43122 Parma, Italy
| | - Fabio Bellina
- Department of Chemistry and Industrial Chemistry, University of Pisa, Via Moruzzi 13, 56124 Pisa, Italy
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4
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Guariento S, Chesi M, Bellina F, Copelli D, Venturi L, Bua E, Moretti E, Ronchi P. New Ligandless C−H Activation Procedure for The Decoration of C‐3 Position of 1H‐Indazole Derivatives. ChemistrySelect 2023. [DOI: 10.1002/slct.202203916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
Affiliation(s)
- Sara Guariento
- Chemistry Research and Drug Design Chiesi Farmaceutici S.p.A L.go Belloli 11/a 43122 Parma Italy
| | - Mattia Chesi
- Chemistry Research and Drug Design Chiesi Farmaceutici S.p.A L.go Belloli 11/a 43122 Parma Italy
| | - Fabio Bellina
- Dipartimento di Chimica e Chimica Industriale Università di Pisa Via Moruzzi 13 56124 Pisa Italy
| | - Diego Copelli
- GTD – Digital, Data & Modelling Chiesi Farmaceutici S.p.A L.go Belloli 11/a 43122 Parma Italy
| | - Luca Venturi
- Analytics and Early Formulation Department Chiesi Farmaceutici S.p.A L.go Belloli 11/a 43122 Parma Italy
| | - Emanuela Bua
- Food and Drug Department University of Parma Parco Area delle Scienze 27/A 43124 Parma PR Italy
| | - Elisa Moretti
- Analytics and Early Formulation Department Chiesi Farmaceutici S.p.A L.go Belloli 11/a 43122 Parma Italy
| | - Paolo Ronchi
- Chemistry Research and Drug Design Chiesi Farmaceutici S.p.A L.go Belloli 11/a 43122 Parma Italy
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5
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Rosadoni E, Banchini F, Bellini S, Lessi M, Pasquinelli L, Bellina F. Ligandless Palladium-Catalyzed Direct C-5 Arylation of Azoles Promoted by Benzoic Acid in Anisole. Molecules 2022; 27:molecules27238454. [PMID: 36500546 PMCID: PMC9735507 DOI: 10.3390/molecules27238454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2022] [Revised: 11/26/2022] [Accepted: 11/30/2022] [Indexed: 12/12/2022] Open
Abstract
The palladium-catalyzed direct arylation of azoles with (hetero)aryl halides is nowadays one of the most versatile and efficient procedures for the selective synthesis of heterobiaryls. Although this procedure is, due to its characteristics, also of great interest in the industrial field, the wide use of a reaction medium such as DMF or DMA, two polar aprotic solvents coded as dangerous according to environmental, health, safety (EHS) parameters, strongly limits its actual use. In contrast, the use of aromatic solvents as the reaction medium for direct arylations, although some of them show good EHS values, is poorly reported, probably due to their low solvent power against reagents and their potential involvement in undesired side reactions. In this paper we report an unprecedented selective C-5 arylation procedure involving anisole as an EHS green reaction solvent. In addition, the beneficial role of benzoic acid as an additive was also highlighted, a role that had never been previously described.
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Affiliation(s)
- Elisabetta Rosadoni
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via Moruzzi 13, 56124 Pisa, Italy
| | - Federico Banchini
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via Moruzzi 13, 56124 Pisa, Italy
| | - Sara Bellini
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via Moruzzi 13, 56124 Pisa, Italy
| | - Marco Lessi
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via Moruzzi 13, 56124 Pisa, Italy
| | - Luca Pasquinelli
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via Moruzzi 13, 56124 Pisa, Italy
| | - Fabio Bellina
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via Moruzzi 13, 56124 Pisa, Italy
- Consorzio C.I.N.M.P.I.S., Via E. Orabona 4, 70125 Bari, Italy
- Correspondence:
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6
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Draskovits M, Catorci D, Wimmer L, Rehman S, Siebert DCB, Ernst M, Schnürch M, Mihovilovic MD. Novel synthetic procedures for C2 substituted imidazoquinolines as ligands for the α/β-interface of the GABAA-receptor. MONATSHEFTE FUR CHEMIE 2022; 154:1391-1404. [PMID: 38020487 PMCID: PMC10667396 DOI: 10.1007/s00706-022-02988-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2022] [Accepted: 09/18/2022] [Indexed: 11/25/2022]
Abstract
A series of substituted imidazoquinolines, a structurally related chemotype to pyrazoloquinolinones, a well-known class of GABAA ligands, was prepared via two synthetic procedures and the efficiency of these procedures were compared. One method relies on classical heterocyclic synthesis, the other one aims at late-stage decoration of a truncated scaffold via direct C-H functionalization. A pharmacological evaluation disclosed that one of the synthesized derivatives showed interesting activity on a α1β3 containing receptor subtype. Graphical abstract Supplementary Information The online version contains supplementary material available at 10.1007/s00706-022-02988-8.
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Affiliation(s)
- Markus Draskovits
- Institute of Applied Synthetic Chemistry, TU Wien, Getreidemarkt 9/163, 1060 Vienna, Austria
| | - Daniele Catorci
- Institute of Applied Synthetic Chemistry, TU Wien, Getreidemarkt 9/163, 1060 Vienna, Austria
| | - Laurin Wimmer
- Institute of Applied Synthetic Chemistry, TU Wien, Getreidemarkt 9/163, 1060 Vienna, Austria
| | - Sabah Rehman
- Center for Brain Research, Medical University of Vienna, Spitalgasse 4, 1090 Vienna, Austria
| | | | - Margot Ernst
- Center for Brain Research, Medical University of Vienna, Spitalgasse 4, 1090 Vienna, Austria
| | - Michael Schnürch
- Institute of Applied Synthetic Chemistry, TU Wien, Getreidemarkt 9/163, 1060 Vienna, Austria
| | - Marko D. Mihovilovic
- Institute of Applied Synthetic Chemistry, TU Wien, Getreidemarkt 9/163, 1060 Vienna, Austria
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7
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Zhao H, Luo Z, Yang J, Li B, Han J, Xu L, Lai W, Walsh PJ. Ligand‐Promoted Rh
I
‐Catalyzed C2‐Selective C−H Alkenylation and Polyenylation of Imidazoles with Alkenyl Carboxylic Acids. Chemistry 2022; 28:e202200441. [DOI: 10.1002/chem.202200441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Indexed: 11/08/2022]
Affiliation(s)
- Haoqiang Zhao
- Department of Chemistry Renmin University of China Beijing 100872 P. R. China
- Roy and Diana Vagelos Laboratories Penn/Merck Laboratory for High-Throughput Experimentation Department of Chemistry University of Pennsylvania 231 South 34th Street Philadelphia PA 19104-6323 USA
- Department of Chemistry School of Chinese Pharmacy Beijing University of Chinese Medicine Beijing 102488 P. R. China
| | - Zhenli Luo
- Department of Chemistry Renmin University of China Beijing 100872 P. R. China
| | - Ji Yang
- Department of Chemistry Renmin University of China Beijing 100872 P. R. China
| | - Bohan Li
- Department of Chemistry Renmin University of China Beijing 100872 P. R. China
| | - Jiahong Han
- Department of Chemistry Renmin University of China Beijing 100872 P. R. China
| | - Lijin Xu
- Department of Chemistry Renmin University of China Beijing 100872 P. R. China
| | - Wenzhen Lai
- Department of Chemistry Renmin University of China Beijing 100872 P. R. China
| | - Patrick J. Walsh
- Roy and Diana Vagelos Laboratories Penn/Merck Laboratory for High-Throughput Experimentation Department of Chemistry University of Pennsylvania 231 South 34th Street Philadelphia PA 19104-6323 USA
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8
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Liu L, Huang H, Doucet H. Double C‐H bond functionalization for the annulative
π
‐extension of 1‐arylimidazoles: A palladium‐catalyzed one pot access to imidazo[1,5‐
f
]phenanthridines. Appl Organomet Chem 2022. [DOI: 10.1002/aoc.6747] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Linhao Liu
- Univ Rennes, CNRS, ISCR‐UMR 6226 Rennes France
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9
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De Vos D, Beckers I, O’Rourke G. Late-Stage C–H Arylation of Azepinoindole via Pd/Cu Catalysis: A Step Efficient and Convergent Synthesis of Rucaparib. SYNTHESIS-STUTTGART 2022. [DOI: 10.1055/s-0037-1610784] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
AbstractThe C–H arylation of indoles holds the promise to shorten synthetic routes in the production of pharmaceuticals. However, late-stage C–H activation reactions often rely on the presence of protecting groups or stoichiometric metal additives. The regiospecific C–H arylation of a highly functionalized azepino[5,3,4-cd]indole scaffold lacking directing groups via Pd(II) and Cu(II) co-catalysis is reported. The direct C–H coupling was demonstrated in the convergent synthesis of rucaparib, an FDA approved anticancer drug.
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10
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Kaloğlu M, Şahan MH, Düşünceli SD, Özdemir İ. Synthesis of Quinoxaline-Linked Bis(Benzimidazolium) Salts and Their Catalytic Application in Palladium-Catalyzed Direct Arylation of Heteroarenes. Catal Letters 2021. [DOI: 10.1007/s10562-021-03787-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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11
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Duan YT, Parmar TH, Sangani CB, Shah AS, Ameta RK. 1-[Bis(dimethylamino)methylene]-1H-1,2,3-triazolo[4,5-b]pyridinium 3-Oxide Hexafluorophosphate (HATU)/Hydroxybenzotriazole (HOBT)-based One-Pot Cyclization of N-Substituted 2-Arylbenzimidazole Derivatives. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2020. [DOI: 10.1134/s107042802005019x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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12
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Saha M, Das AR. Hypervalent iodine promoted ortho diversification: 2-aryl benzimidazole, quinazoline and imidazopyridine as directing templates. Org Biomol Chem 2020; 18:941-955. [PMID: 31922163 DOI: 10.1039/c9ob02533b] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The mild and efficient palladium-catalyzed ortho C(sp2)-H diversification of (NH)-free 2-substituted benzimidazole, quinazoline, and imidazopyridine is reported using hypervalent iodine as the key reagent. Acetoxy, aryl, iodide and nitro functional groups were introduced on the same substrate by simply shifting the reaction conditions in the presence of inorganic additives (Cs2CO3, I2, NaNO2) and the hypervalent iodine reagent (diacetoxyiodo)benzene (PIDA) under aerobic conditions. The combination of NaNO2 with PIDA was successfully employed in Pd-catalyzed C-H bond nitration to achieve a library of nitrated 1,3 N-heterocycles. This versatile ortho C(sp2)-H activation strategy features operational simplicity, short reaction times, and ample substrate possibilities, it requires no ligands or silver salts as additives, and it shows good tolerance of oxidation prone functional groups.
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Affiliation(s)
- Moumita Saha
- Department of Chemistry, University of Calcutta, Kolkata, West Bengal, India.
| | - Asish R Das
- Department of Chemistry, University of Calcutta, Kolkata, West Bengal, India.
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13
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Huang HY, Li H, Roisnel T, Soulé JF, Doucet H. Regioselective Pd-catalyzed direct C1- and C2-arylations of lilolidine for the access to 5,6-dihydropyrrolo[3,2,1- ij]quinoline derivatives. Beilstein J Org Chem 2019; 15:2069-2075. [PMID: 31501675 PMCID: PMC6719733 DOI: 10.3762/bjoc.15.204] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Accepted: 08/14/2019] [Indexed: 01/15/2023] Open
Abstract
The Pd-catalyzed C–H bond functionalization of lilolidine was investigated. The use of a palladium-diphosphine catalyst associated to acetate bases in DMA was found to promote the regioselective arylation at α-position of the nitrogen atom of lilolidine with a wide variety of aryl bromides. From these α-arylated lilolidines, a second arylation at the β-position gives the access to α,β-diarylated lilolidines containing two different aryl groups. The one pot access to α,β-diarylated lilolidines with two identical aryl groups is also possible by using a larger amount of aryl bromide. The synthesis of 5,6-dihydrodibenzo[a,c]pyrido[3,2,1-jk]carbazoles from lilolidine via three successive direct arylations is also described. Therefore, this methodology provides a straightforward access to several lilolidine derivatives from commercially available compounds via one, two or three C–H bond functionalization steps allowing to tune their biological properties.
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Affiliation(s)
- Hai-Yun Huang
- Univ Rennes, CNRS, ISCR-UMR 6226, F-35000 Rennes, France
| | - Haoran Li
- Univ Rennes, CNRS, ISCR-UMR 6226, F-35000 Rennes, France
| | | | | | - Henri Doucet
- Univ Rennes, CNRS, ISCR-UMR 6226, F-35000 Rennes, France
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14
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Shi X, Soulé J, Doucet H. Reaction Conditions for the Regiodivergent Direct Arylations at C2‐ or C5‐Positions of Oxazoles using Phosphine‐Free Palladium Catalysts. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900641] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Xinzhe Shi
- Univ Rennes, CNRS, ISCR-UMR 6226 F-35000 Rennes France
| | | | - Henri Doucet
- Univ Rennes, CNRS, ISCR-UMR 6226 F-35000 Rennes France
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15
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Navalón S, Álvaro M, Dhakshinamoorthy A, García H. Encapsulation of Metal Nanoparticles within Metal-Organic Frameworks for the Reduction of Nitro Compounds. Molecules 2019; 24:molecules24173050. [PMID: 31443444 PMCID: PMC6749428 DOI: 10.3390/molecules24173050] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Revised: 08/14/2019] [Accepted: 08/20/2019] [Indexed: 11/16/2022] Open
Abstract
Nitro group reduction is a reaction of a considerable importance for the preparation of bulk chemicals and in organic synthesis. There are reports in the literature showing that incorporation of metal nanoparticles (MNPs) inside metal–organic frameworks (MOFs) is a suitable strategy to develop catalysts for these reactions. Some of the examples reported in the literature have shown activity data confirming the superior performance of MNPs inside MOFs. In the present review, the existing literature reports have been grouped depending on whether these MNPs correspond to a single metal or they are alloys. The final section of this review summarizes the state of the art and forecasts future developments in the field.
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Affiliation(s)
- Sergio Navalón
- Departamento de Química, Universitat Politècnica de València, C/Camino de Vera, s/n, 46022 Valencia, Spain.
| | - Mercedes Álvaro
- Departamento de Química, Universitat Politècnica de València, C/Camino de Vera, s/n, 46022 Valencia, Spain
| | | | - Hermenegildo García
- Departamento de Química, Universitat Politècnica de València, C/Camino de Vera, s/n, 46022 Valencia, Spain.
- Instituto Universitario de Tecnologia Quimica (CSIC-UPV), Universitat Politecnica de Valencia, Av. De los Naranjos s/n, 46022 Valencia, Spain.
- Center of Excellence for Advanced Materials Research, King Abdulaziz University, Jeddah 21589, Saudi Arabia.
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16
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Banerjee I, Ghosh KC, Sinha S. Pd-catalyzed C–H bond activation of Indoles for Suzuki reaction. J CHEM SCI 2019. [DOI: 10.1007/s12039-019-1649-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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17
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Das D, Bhutia ZT, Chatterjee A, Banerjee M. Mechanochemical Pd(II)-Catalyzed Direct and C-2-Selective Arylation of Indoles. J Org Chem 2019; 84:10764-10774. [PMID: 31373493 DOI: 10.1021/acs.joc.9b01280] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
A mechanochemical method for the preparation of synthetically useful 2-arylindoles is developed using Pd(II) as the catalyst in the absence of phosphine ligands in a ball-mill. The developed protocol is highly C-2 selective and tolerant of structural variations with electron-rich and electron-deficient substituents both in indoles and iodoarenes. Arylation is possible in both unprotected indoles and N-protected indoles with the electron-donating group with the former substrate being relatively slower to react and little less yielding. Indoles with a deactivated five-membered ring could also take part in the reaction with ease. The scalability of the reaction was demonstrated by conducting the reaction in the gram scale. In general, the reactions were achieved in a shorter time than the conventional methods.
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Affiliation(s)
- Dharmendra Das
- Department of Chemistry , BITS Pilani, K. K. Birla Goa Campus , Zuarinagar , Goa 403 726 , India
| | - Zigmee T Bhutia
- Department of Chemistry , BITS Pilani, K. K. Birla Goa Campus , Zuarinagar , Goa 403 726 , India
| | - Amrita Chatterjee
- Department of Chemistry , BITS Pilani, K. K. Birla Goa Campus , Zuarinagar , Goa 403 726 , India
| | - Mainak Banerjee
- Department of Chemistry , BITS Pilani, K. K. Birla Goa Campus , Zuarinagar , Goa 403 726 , India
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18
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Rossi R, Angelici G, Casotti G, Manzini C, Lessi M. Catalytic Synthesis of 1,2,4,5‐Tetrasubstituted 1
H
‐Imidazole Derivatives: State of the Art. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201801381] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Renzo Rossi
- Dipartimento di Chimica e Chimica IndustrialeUniversity of Pisa via G. Moruzzi 13 56124 Pisa Italy
| | - Gaetano Angelici
- Dipartimento di Chimica e Chimica IndustrialeUniversity of Pisa via G. Moruzzi 13 56124 Pisa Italy
| | - Gianluca Casotti
- Dipartimento di Chimica e Chimica IndustrialeUniversity of Pisa via G. Moruzzi 13 56124 Pisa Italy
| | - Chiara Manzini
- Dipartimento di Chimica e Chimica IndustrialeUniversity of Pisa via G. Moruzzi 13 56124 Pisa Italy
| | - Marco Lessi
- Dipartimento di Chimica e Chimica IndustrialeUniversity of Pisa via G. Moruzzi 13 56124 Pisa Italy
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19
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L'abbate FP, Müller R, Openshaw R, Combrinck JM, de Villiers KA, Hunter R, Egan TJ. Hemozoin inhibiting 2-phenylbenzimidazoles active against malaria parasites. Eur J Med Chem 2018; 159:243-254. [PMID: 30296683 DOI: 10.1016/j.ejmech.2018.09.060] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2018] [Revised: 09/22/2018] [Accepted: 09/24/2018] [Indexed: 12/23/2022]
Abstract
The 2-phenylbenzimidazole scaffold has recently been discovered to inhibit β-hematin (synthetic hemozoin) formation by high throughput screening. Here, a library of 325,728 N-4-(1H-benzo[d]imidazol-2-yl)aryl)benzamides was enumerated, and Bayesian statistics used to predict β-hematin and Plasmodium falciparum growth inhibition. Filtering predicted inactives and compounds with negligible aqueous solubility reduced the library to 35,124. Further narrowing to compounds with terminal aryl ring substituents only, reduced the library to 18, 83% of which were found to inhibit β-hematin formation <100 μM and 50% parasite growth <2 μM. Four compounds showed nanomolar parasite growth inhibition activities, no cross-resistance in a chloroquine resistant strain and low cytotoxicity. QSAR analysis showed a strong association of parasite growth inhibition with inhibition of β-hematin formation and the most active compound inhibited hemozoin formation in P. falciparum, with consequent increasing exchangeable heme. Pioneering use of molecular docking for this system demonstrated predictive ability and could rationalize observed structure activity trends.
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Affiliation(s)
- Fabrizio P L'abbate
- Department of Chemistry, University of Cape Town, Rondebosch, 7701, South Africa
| | - Ronel Müller
- Department of Chemistry and Polymer Science, Stellenbosch University, Private Bag X1, Matieland, 7602, South Africa
| | - Roxanne Openshaw
- Department of Chemistry, University of Cape Town, Rondebosch, 7701, South Africa
| | - Jill M Combrinck
- Department of Medicine, Division of Clinical Pharmacology, University of Cape Town, Observatory, 7925, South Africa
| | - Katherine A de Villiers
- Department of Chemistry and Polymer Science, Stellenbosch University, Private Bag X1, Matieland, 7602, South Africa
| | - Roger Hunter
- Department of Chemistry, University of Cape Town, Rondebosch, 7701, South Africa
| | - Timothy J Egan
- Department of Chemistry, University of Cape Town, Rondebosch, 7701, South Africa; Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Rondebosch, 7701, South Africa.
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20
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Mao S, Shi X, Soulé JF, Doucet H. Exploring Green Solvents Associated to Pd/C as Heterogeneous Catalyst for Direct Arylation of Heteroaromatics with Aryl Bromides. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800596] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Shuxin Mao
- Univ Rennes; CNRS; ISCR-UMR 6226, F- 35000 Rennes France
| | - Xinzhe Shi
- Univ Rennes; CNRS; ISCR-UMR 6226, F- 35000 Rennes France
| | | | - Henri Doucet
- Univ Rennes; CNRS; ISCR-UMR 6226, F- 35000 Rennes France
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21
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Zhao H, Xu J, Chen C, Xu X, Pan Y, Zhang Z, Li H, Xu L. Rhodium(III)-Catalyzed Selective Direct Olefination of Imidazoles. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201701515] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Haoqiang Zhao
- Department of Chemistry; Renmin University of China; Beijing 100872 People's Republic of China
| | - Jianbin Xu
- Department of Chemistry; Renmin University of China; Beijing 100872 People's Republic of China
| | - Changjun Chen
- Department of Chemistry; Renmin University of China; Beijing 100872 People's Republic of China
| | - Xin Xu
- Department of Chemistry; Renmin University of China; Beijing 100872 People's Republic of China
| | - Yixiao Pan
- Department of Chemistry; Renmin University of China; Beijing 100872 People's Republic of China
| | - Zongyao Zhang
- Department of Chemistry; Renmin University of China; Beijing 100872 People's Republic of China
| | - Huanrong Li
- Department of Chemistry; Renmin University of China; Beijing 100872 People's Republic of China
| | - Lijin Xu
- Department of Chemistry; Renmin University of China; Beijing 100872 People's Republic of China
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22
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Hu LQ, Deng RL, Li YF, Zeng CJ, Shen DS, Liu FS. Developing Bis(imino)acenaphthene-Supported N-Heterocyclic Carbene Palladium Precatalysts for Direct Arylation of Azoles. Organometallics 2018. [DOI: 10.1021/acs.organomet.7b00784] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Li-Qun Hu
- School of Chemistry and Chemical Engineering, Guangdong Cosmetics Engineering & Technology Research Center, Guangdong Pharmaceutical University, Zhongshan, Guangdong 528458, China
| | - Rong-Li Deng
- School of Chemistry and Chemical Engineering, Guangdong Cosmetics Engineering & Technology Research Center, Guangdong Pharmaceutical University, Zhongshan, Guangdong 528458, China
| | - Yan-Fen Li
- School of Chemistry and Chemical Engineering, Guangdong Cosmetics Engineering & Technology Research Center, Guangdong Pharmaceutical University, Zhongshan, Guangdong 528458, China
| | - Cui-Jin Zeng
- School of Chemistry and Chemical Engineering, Guangdong Cosmetics Engineering & Technology Research Center, Guangdong Pharmaceutical University, Zhongshan, Guangdong 528458, China
| | - Dong-Sheng Shen
- School of Chemistry and Chemical Engineering, Guangdong Cosmetics Engineering & Technology Research Center, Guangdong Pharmaceutical University, Zhongshan, Guangdong 528458, China
| | - Feng-Shou Liu
- School of Chemistry and Chemical Engineering, Guangdong Cosmetics Engineering & Technology Research Center, Guangdong Pharmaceutical University, Zhongshan, Guangdong 528458, China
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23
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Kim H, Hwang YJ, Han I, Joo JM. Regioselective C–H alkenylation of imidazoles and its application to the synthesis of unsymmetrically substituted benzimidazoles. Chem Commun (Camb) 2018; 54:6879-6882. [DOI: 10.1039/c8cc02405g] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
A palladium-catalyzed C5-selective alkenylation of imidazoles has been developed and applied to the synthesis of alkenyl imidazoles and multi-substituted benzimidazoles.
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Affiliation(s)
- Hyeongwoo Kim
- Department of Chemistry and Chemistry Institute of Functional Materials
- Pusan National University
- Busan 46241
- Republic of Korea
| | - Ye Ji Hwang
- Department of Chemistry and Chemistry Institute of Functional Materials
- Pusan National University
- Busan 46241
- Republic of Korea
| | - Inhyuk Han
- Department of Chemistry and Chemistry Institute of Functional Materials
- Pusan National University
- Busan 46241
- Republic of Korea
| | - Jung Min Joo
- Department of Chemistry and Chemistry Institute of Functional Materials
- Pusan National University
- Busan 46241
- Republic of Korea
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24
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Wu A, Chen Q, Liu W, You L, Fu Y, Zhang H. Transition-metal-free arylation of benzoxazoles with aryl nitriles. Org Chem Front 2018. [DOI: 10.1039/c8qo00227d] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Transition-metal-free arylation of benzoxazoles with aryl nitriles has been developed to afford important 2-aryl benzoxazoles under simple reaction conditions.
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Affiliation(s)
- Aizhen Wu
- College of Chemistry
- Nanchang University
- Nanchang 330031
- P. R. China
| | - Quan Chen
- College of Chemistry
- Nanchang University
- Nanchang 330031
- P. R. China
| | - Wei Liu
- College of Food Science and Technology
- Henan University of Technology
- Zhengzhou 450001
- P. R. China
| | - Lijun You
- College of Chemistry
- Nanchang University
- Nanchang 330031
- P. R. China
| | - Yifan Fu
- College of Chemistry
- Nanchang University
- Nanchang 330031
- P. R. China
| | - Hua Zhang
- College of Chemistry
- Nanchang University
- Nanchang 330031
- P. R. China
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25
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Clemenceau A, Wang Q, Zhu J. Cooperative Pd/Cu Catalysis: Multicomponent Synthesis of Tetrasubstituted Imidazolones from Methyl α-Isocyanoacetates, Primary Amines, and Aryl(vinyl) Iodides. Org Lett 2017; 20:126-129. [DOI: 10.1021/acs.orglett.7b03479] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Antonin Clemenceau
- Laboratory of Synthesis and Natural Products,
Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL-SB-ISIC-LSPN, BCH 5304, 1015 Lausanne, Switzerland
| | - Qian Wang
- Laboratory of Synthesis and Natural Products,
Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL-SB-ISIC-LSPN, BCH 5304, 1015 Lausanne, Switzerland
| | - Jieping Zhu
- Laboratory of Synthesis and Natural Products,
Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL-SB-ISIC-LSPN, BCH 5304, 1015 Lausanne, Switzerland
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26
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Hu Z, Dong J, Xu X. Silver-Catalyzed [3+2] Cycloaddition of Azomethine Ylides with Isocyanides for Imidazole Synthesis. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700447] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Zhongyan Hu
- Jilin Province Key Laboratory of Organic Functional Molecular Design and Synthesis, Department of Chemistry; Northeast Normal University; Changchun 130024 People's Republic of China
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Institute of Molecular and Nano Science; Shandong Normal University; Jinan 250014 People's Republic of China
| | - Jinhuan Dong
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Institute of Molecular and Nano Science; Shandong Normal University; Jinan 250014 People's Republic of China
| | - Xianxiu Xu
- Jilin Province Key Laboratory of Organic Functional Molecular Design and Synthesis, Department of Chemistry; Northeast Normal University; Changchun 130024 People's Republic of China
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Institute of Molecular and Nano Science; Shandong Normal University; Jinan 250014 People's Republic of China
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27
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Gao Y, Zhu W, Yin L, Dong B, Fu J, Ye Z, Xue F, Jiang C. Palladium-catalyzed direct C2-arylation of free (N H) indoles via norbornene-mediated regioselective C H activation. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.04.066] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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28
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Gao GL, Yang C, Xia W. Selective C–H trifluoromethylation of benzimidazoles through photoredox catalysis. Chem Commun (Camb) 2017; 53:1041-1044. [DOI: 10.1039/c6cc08975e] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
This protocol presented a new strategy for visible light induced C–H trifluoromethylation at the C4 of benzimidazoles using Togni's reagent in the presence of fac-Ir(ppy)3.
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Affiliation(s)
- Guo-Lin Gao
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage
- State Key Laboratory of Urban Water Resource and Environment
- School of Chemistry and Chemical Engineering
- Harbin Institute of Technology
- Harbin 150080
| | - Chao Yang
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage
- State Key Laboratory of Urban Water Resource and Environment
- School of Chemistry and Chemical Engineering
- Harbin Institute of Technology
- Harbin 150080
| | - Wujiong Xia
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage
- State Key Laboratory of Urban Water Resource and Environment
- School of Chemistry and Chemical Engineering
- Harbin Institute of Technology
- Harbin 150080
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29
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Lu YT, Chen TL, Chang KS, Chang CM, Wei TY, Liu JW, Hsiao CA, Shih TL. Synthesis of novel C4-benzazole naphthalimide derivatives with potent anti-tumor properties against murine melanoma. Bioorg Med Chem 2017; 25:789-794. [DOI: 10.1016/j.bmc.2016.11.057] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2016] [Accepted: 11/29/2016] [Indexed: 01/08/2023]
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30
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Pandiri H, Soni V, Gonnade RG, Punji B. Development of (quinolinyl)amido-based pincer palladium complexes: a robust and phosphine-free catalyst system for C–H arylation of benzothiazoles. NEW J CHEM 2017. [DOI: 10.1039/c7nj00452d] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Well-defined (quinolinyl)amido-pincer palladium complexes are developed and employed for the catalytic C–H bond arylation of benzothiazoles with aryl iodides, which can be recycled and reused for several cycles.
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Affiliation(s)
- Hanumanprasad Pandiri
- Organometallic Synthesis and Catalysis Group
- Chemical Engineering Division. CSIR–National Chemical Laboratory (CSIR–NCL)
- Pune – 411 008
- India
| | - Vineeta Soni
- Organometallic Synthesis and Catalysis Group
- Chemical Engineering Division. CSIR–National Chemical Laboratory (CSIR–NCL)
- Pune – 411 008
- India
| | - Rajesh G. Gonnade
- Centre for Material Characterization. CSIR–National Chemical Laboratory (CSIR–NCL)
- Pune – 411 008
- India
| | - Benudhar Punji
- Organometallic Synthesis and Catalysis Group
- Chemical Engineering Division. CSIR–National Chemical Laboratory (CSIR–NCL)
- Pune – 411 008
- India
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31
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Tomashenko OA, Novikov MS, Khlebnikov AF. NHC as the Guiding Factor in a Copper-Catalyzed Intramolecular C Arylation of Pyrrolylimidazolium Salts: Synthesis of Luminescent Heterotetracyclic Frameworks. J Org Chem 2016; 82:616-623. [DOI: 10.1021/acs.joc.6b02627] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Olesya A. Tomashenko
- Institute of Chemistry, Saint Petersburg State University, 7/9 Universitetskaya nab., St. Petersburg 199034 Russia
| | - Mikhail S. Novikov
- Institute of Chemistry, Saint Petersburg State University, 7/9 Universitetskaya nab., St. Petersburg 199034 Russia
| | - Alexander F. Khlebnikov
- Institute of Chemistry, Saint Petersburg State University, 7/9 Universitetskaya nab., St. Petersburg 199034 Russia
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32
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Development of 1-aryl-3-furanyl/thienyl-imidazopyridine templates for inhibitors against hypoxia inducible factor (HIF)-1 transcriptional activity. Bioorg Med Chem Lett 2016; 26:5887-5890. [DOI: 10.1016/j.bmcl.2016.11.009] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2016] [Revised: 11/02/2016] [Accepted: 11/04/2016] [Indexed: 01/23/2023]
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33
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Théveau L, Schneider C, Fruit C, Hoarau C. Orthogonal Palladium-Catalyzed Direct C−H Bond Arylation of Heteroaromatics with Aryl Halides. ChemCatChem 2016. [DOI: 10.1002/cctc.201600489] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Laure Théveau
- Normandie Univ, COBRA, UMR 6014 et FR 3038; Univ Rouen; INSA Rouen; CNRS, IRCOF; 1 rue Tesnière 76821 Mont Saint Aignan Cedex France
| | - Cédric Schneider
- Normandie Univ, COBRA, UMR 6014 et FR 3038; Univ Rouen; INSA Rouen; CNRS, IRCOF; 1 rue Tesnière 76821 Mont Saint Aignan Cedex France
| | - Corinne Fruit
- Normandie Univ, COBRA, UMR 6014 et FR 3038; Univ Rouen; INSA Rouen; CNRS, IRCOF; 1 rue Tesnière 76821 Mont Saint Aignan Cedex France
| | - Christophe Hoarau
- Normandie Univ, COBRA, UMR 6014 et FR 3038; Univ Rouen; INSA Rouen; CNRS, IRCOF; 1 rue Tesnière 76821 Mont Saint Aignan Cedex France
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34
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Harari M, Couly F, Fruit C, Besson T. Pd-Catalyzed and Copper Assisted Regioselective Sequential C2 and C7 Arylation of Thiazolo[5,4-f]quinazolin-9(8H)-one with Aryl Halides. Org Lett 2016; 18:3282-5. [PMID: 27314437 DOI: 10.1021/acs.orglett.6b01552] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A selective functionalization of thiazolo[5,4-f]quinazolin-9(8H)-one has been developed through sequential activation of C-H bonds to furnish diarylated compounds. This strategy allows the regioselective C2 and C7 arylation by a judicious choice of coupling partners and bases, requiring no additional ligands or directing groups. Differently substituted N(8)-benzylated-2,7-diaryl-thiazoloquinazolin-9(8H)-ones were thereby obtained in a facile manner. A one-pot procedure was also performed. These protocols provide a synthetically useful route for late-stage functionalization of this highly valuable scaffold, required in drug discovery.
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Affiliation(s)
- Marine Harari
- Normandie Univ, UNIROUEN, INSA Rouen, CNRS, COBRA, 76000 Rouen, France
| | - Florence Couly
- Normandie Univ, UNIROUEN, INSA Rouen, CNRS, COBRA, 76000 Rouen, France
| | - Corinne Fruit
- Normandie Univ, UNIROUEN, INSA Rouen, CNRS, COBRA, 76000 Rouen, France
| | - Thierry Besson
- Normandie Univ, UNIROUEN, INSA Rouen, CNRS, COBRA, 76000 Rouen, France
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35
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Abdellaoui F, Youssef C, Ben Ammar H, Roisnel T, Soulé JF, Doucet H. Palladium-Catalyzed Regioselective C–H Bond Arylations of Benzoxazoles and Benzothiazoles at the C7 Position. ACS Catal 2016. [DOI: 10.1021/acscatal.6b00678] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Fatma Abdellaoui
- Institut des Sciences
Chimiques de Rennes, UMR 6226 CNRS-Université de Rennes “Organométalliques:
Matériaux et Catalyse”, Campus de Beaulieu, 35042 Rennes, France
- Laboratoire de
Synthèse Organique Asymétrique et Catalyse Homogène,
(UR 11ES56) Université de Monastir, Faculté des Sciences
de Monastir, Avenue de l’environnement, Monastir 5000, Tunisia
| | - Chiraz Youssef
- Laboratoire de
Synthèse Organique Asymétrique et Catalyse Homogène,
(UR 11ES56) Université de Monastir, Faculté des Sciences
de Monastir, Avenue de l’environnement, Monastir 5000, Tunisia
| | - Hamed Ben Ammar
- Laboratoire de
Synthèse Organique Asymétrique et Catalyse Homogène,
(UR 11ES56) Université de Monastir, Faculté des Sciences
de Monastir, Avenue de l’environnement, Monastir 5000, Tunisia
| | - Thierry Roisnel
- Institut des Sciences
Chimiques de Rennes, UMR 6226 CNRS-Université de Rennes “Organométalliques:
Matériaux et Catalyse”, Campus de Beaulieu, 35042 Rennes, France
| | - Jean-François Soulé
- Institut des Sciences
Chimiques de Rennes, UMR 6226 CNRS-Université de Rennes “Organométalliques:
Matériaux et Catalyse”, Campus de Beaulieu, 35042 Rennes, France
| | - Henri Doucet
- Institut des Sciences
Chimiques de Rennes, UMR 6226 CNRS-Université de Rennes “Organométalliques:
Matériaux et Catalyse”, Campus de Beaulieu, 35042 Rennes, France
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36
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Del Frate G, Bellina F, Mancini G, Marianetti G, Minei P, Pucci A, Barone V. Tuning of dye optical properties by environmental effects: a QM/MM and experimental study. Phys Chem Chem Phys 2016; 18:9724-33. [PMID: 27001346 PMCID: PMC5123643 DOI: 10.1039/c6cp00841k] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The present work is aimed at a deeper investigation of two recently synthesized heteroaromatic fluorophores by means of a computational multilayer approach, integrating quantum mechanics (QM) and molecular mechanics (MM).
The present work is aimed at a deeper investigation of two recently synthesized heteroaromatic fluorophores by means of a computational multilayer approach, integrating quantum mechanics (QM) and molecular mechanics (MM). In particular, dispersion of the title dyes in a polymer matrix is studied in connection with potential applications as photoactive species in luminescent solar concentrators (LSCs). Molecular dynamics simulations, based on accurate QM-derived force fields, reveal increased stiffness of these organic dyes when going from CHCl3 solution to the polymer matrix. QM/MM computations of UV spectra for snapshots extracted from MD simulations show that this different flexibility permits explaining the different spectral shapes obtained experimentally for the two different environments. Moreover, the general spectroscopic trends are reproduced well by static computations employing a polarizable continuum description of environmental effects.
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37
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Trofimov BA, Nikitina LP, Andriyankova LV, Belyaeva KV, Afonin AV, Mal’kina AG. First example of noncatalytic C2–H functionalization of imidazole ring with an alkoxy enone system. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2016. [DOI: 10.1134/s1070428016040266] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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38
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Rossi R, Lessi M, Manzini C, Marianetti G, Bellina F. Achievement of regioselectivity in transition metal-catalyzed direct C–H (hetero)arylation reactions of heteroarenes with one heteroatom through the use of removable protecting/blocking substituents or traceless directing groups. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.02.037] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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39
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Khake SM, Jagtap RA, Dangat YB, Gonnade RG, Vanka K, Punji B. Mechanistic Insights into Pincer-Ligated Palladium-Catalyzed Arylation of Azoles with Aryl Iodides: Evidence of a PdII–PdIV–PdII Pathway. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00003] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Shrikant M. Khake
- Organometallic Synthesis and Catalysis Group, Chemical
Engineering Division, ‡Physical and Materials Chemistry Division, and §Centre
for Material Characterization, CSIR-National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pune 411 008, Maharashtra India
| | - Rahul A. Jagtap
- Organometallic Synthesis and Catalysis Group, Chemical
Engineering Division, ‡Physical and Materials Chemistry Division, and §Centre
for Material Characterization, CSIR-National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pune 411 008, Maharashtra India
| | - Yuvraj B. Dangat
- Organometallic Synthesis and Catalysis Group, Chemical
Engineering Division, ‡Physical and Materials Chemistry Division, and §Centre
for Material Characterization, CSIR-National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pune 411 008, Maharashtra India
| | - Rajesh G. Gonnade
- Organometallic Synthesis and Catalysis Group, Chemical
Engineering Division, ‡Physical and Materials Chemistry Division, and §Centre
for Material Characterization, CSIR-National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pune 411 008, Maharashtra India
| | - Kumar Vanka
- Organometallic Synthesis and Catalysis Group, Chemical
Engineering Division, ‡Physical and Materials Chemistry Division, and §Centre
for Material Characterization, CSIR-National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pune 411 008, Maharashtra India
| | - Benudhar Punji
- Organometallic Synthesis and Catalysis Group, Chemical
Engineering Division, ‡Physical and Materials Chemistry Division, and §Centre
for Material Characterization, CSIR-National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pune 411 008, Maharashtra India
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40
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Hu F, Yang J, Xia Y, Ma C, Xia H, Zhang Y, Wang J. C–H Bond Functionalization of Benzoxazoles with Chromium(0) Fischer Carbene Complexes. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00008] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Fangdong Hu
- Beijing
National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory
of Bioorganic Chemistry and Molecular Engineering of Ministry of Education,
College of Chemistry, Peking University, Beijing 100871, China
- School
of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Jinghui Yang
- Beijing
National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory
of Bioorganic Chemistry and Molecular Engineering of Ministry of Education,
College of Chemistry, Peking University, Beijing 100871, China
| | - Ying Xia
- Beijing
National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory
of Bioorganic Chemistry and Molecular Engineering of Ministry of Education,
College of Chemistry, Peking University, Beijing 100871, China
| | - Chen Ma
- School
of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Haiping Xia
- College
of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Yan Zhang
- Beijing
National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory
of Bioorganic Chemistry and Molecular Engineering of Ministry of Education,
College of Chemistry, Peking University, Beijing 100871, China
| | - Jianbo Wang
- Beijing
National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory
of Bioorganic Chemistry and Molecular Engineering of Ministry of Education,
College of Chemistry, Peking University, Beijing 100871, China
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41
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Palladium-catalyzed arylations in 4-pyrone systems: 2,6-diaryl-3,5-dibromo-4-pyrones and kojic acid. MONATSHEFTE FUR CHEMIE 2016. [DOI: 10.1007/s00706-015-1589-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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42
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Wang H, Guo L, Duan XH. Palladium-Catalyzed Alkylarylation of Acrylamides with Unactivated Alkyl Halides. J Org Chem 2016; 81:860-7. [DOI: 10.1021/acs.joc.5b02433] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Hua Wang
- Department of Chemistry,
School of Science and MOE Key Laboratory for Nonequilibrium Synthesis
and Modulation of Condensed Matter, Xi’an Jiaotong University, Xi’an 710049, China
| | - Li−Na Guo
- Department of Chemistry,
School of Science and MOE Key Laboratory for Nonequilibrium Synthesis
and Modulation of Condensed Matter, Xi’an Jiaotong University, Xi’an 710049, China
| | - Xin-Hua Duan
- Department of Chemistry,
School of Science and MOE Key Laboratory for Nonequilibrium Synthesis
and Modulation of Condensed Matter, Xi’an Jiaotong University, Xi’an 710049, China
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43
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Bheeter CB, Chen L, Soulé JF, Doucet H. Regioselectivity in palladium-catalysed direct arylation of 5-membered ring heteroaromatics. Catal Sci Technol 2016. [DOI: 10.1039/c5cy02095f] [Citation(s) in RCA: 168] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
In the past few years, several results using modified catalysts and new reaction conditions have been reported permitting better control of the regioselectivity of Pd-catalysed arylations.
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Affiliation(s)
- Charles Beromeo Bheeter
- Organometalliques, Matériaux et Catalyse
- Institut des Sciences Chimiques de Rennes
- UMR 6226 CNRS-Université de Rennes 1
- 35042 Rennes
- France
| | - Lu Chen
- Organometalliques, Matériaux et Catalyse
- Institut des Sciences Chimiques de Rennes
- UMR 6226 CNRS-Université de Rennes 1
- 35042 Rennes
- France
| | - Jean-François Soulé
- Organometalliques, Matériaux et Catalyse
- Institut des Sciences Chimiques de Rennes
- UMR 6226 CNRS-Université de Rennes 1
- 35042 Rennes
- France
| | - Henri Doucet
- Organometalliques, Matériaux et Catalyse
- Institut des Sciences Chimiques de Rennes
- UMR 6226 CNRS-Université de Rennes 1
- 35042 Rennes
- France
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44
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Hfaiedh A, Ben Ammar H, Soulé JF, Doucet H. Palladium-catalyzed direct desulfitative C2 arylations of 3-halo-N-protected indoles using (hetero)arenesulfonyl chlorides. Org Biomol Chem 2016; 14:4947-56. [DOI: 10.1039/c6ob00584e] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Halo-substituents at the indolyl C3 position act as temporary blocking groups allowing the regioselective formation of 2-arylindoles through a direct desulfitative arylation. This method allows one to prepare a wide variety of indole derivatives in a few steps.
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Affiliation(s)
- Anoir Hfaiedh
- UMR 6226 CNRS-Université de Rennes 1 “Organométalliques
- Matériaux et Catalyse”
- 35042 Rennes
- France
- Laboratoire de Synthèse Organique Asymétrique et Catalyse Homogène (UR 11ES56)
| | - Hamed Ben Ammar
- Laboratoire de Synthèse Organique Asymétrique et Catalyse Homogène (UR 11ES56)
- Université de Monastir
- Faculté des Sciences de Monastir
- Monastir 5000
- Tunisia
| | - Jean-François Soulé
- UMR 6226 CNRS-Université de Rennes 1 “Organométalliques
- Matériaux et Catalyse”
- 35042 Rennes
- France
| | - Henri Doucet
- UMR 6226 CNRS-Université de Rennes 1 “Organométalliques
- Matériaux et Catalyse”
- 35042 Rennes
- France
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45
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Wakioka M, Ishiki S, Ozawa F. Synthesis of Donor–Acceptor Polymers Containing Thiazolo[5,4-d]thiazole Units via Palladium-Catalyzed Direct Arylation Polymerization. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b01822] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Masayuki Wakioka
- International
Research Center for Elements Science (IRCELS), Institute for Chemical
Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Satoru Ishiki
- International
Research Center for Elements Science (IRCELS), Institute for Chemical
Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Fumiyuki Ozawa
- International
Research Center for Elements Science (IRCELS), Institute for Chemical
Research, Kyoto University, Uji, Kyoto 611-0011, Japan
- ACT-C, Japan Science
and Technology Agency, Uji, Kyoto 611-0011, Japan
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46
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Barone V, Bellina F, Biczysko M, Bloino J, Fornaro T, Latouche C, Lessi M, Marianetti G, Minei P, Panattoni A, Pucci A. Toward the design of alkynylimidazole fluorophores: computational and experimental characterization of spectroscopic features in solution and in poly(methyl methacrylate). Phys Chem Chem Phys 2015; 17:26710-23. [PMID: 26395207 PMCID: PMC5892707 DOI: 10.1039/c5cp03047a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The possibilities offered by organic fluorophores in the preparation of advanced plastic materials have been increased by designing novel alkynylimidazole dyes, featuring different push and pull groups. This new family of fluorescent dyes was synthesized by means of a one-pot sequential bromination-alkynylation of the heteroaromatic core, and their optical properties were investigated in tetrahydrofuran and in poly(methyl methacrylate). An efficient in silico pre-screening scheme was devised as consisting of a step-by-step procedure employing computational methodologies by simulation of electronic spectra within simple vertical energy and more sophisticated vibronic approaches. Such an approach was also extended to efficiently simulate one-photon absorption and emission spectra of the dyes in the polymer environment for their potential application in luminescent solar concentrators. Besides the specific applications of this novel material, the integration of computational and experimental techniques reported here provides an efficient protocol that can be applied to make a selection among similar dye candidates, which constitute the essential responsive part of those fluorescent plastic materials.
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Affiliation(s)
- Vincenzo Barone
- Scuola Normale Superiore, piazza dei Cavalieri 7, I-56126 Pisa, Italy
| | - Fabio Bellina
- Dipartimento di Chimica e Chimica Industriale, Universit di Pisa, via Moruzzi 13, I-56124 Pisa, Italy
| | - Malgorzata Biczysko
- Consiglio Nazionale delle Ricerche, Istituto di Chimica dei Composti OrganoMetallici (ICCOM-CNR), UOS di Pisa, Area della Ricerca CNR, Via G. Moruzzi 1, I-56124 Pisa, Italy
| | - Julien Bloino
- Consiglio Nazionale delle Ricerche, Istituto di Chimica dei Composti OrganoMetallici (ICCOM-CNR), UOS di Pisa, Area della Ricerca CNR, Via G. Moruzzi 1, I-56124 Pisa, Italy
| | - Teresa Fornaro
- Scuola Normale Superiore, piazza dei Cavalieri 7, I-56126 Pisa, Italy
| | - Camille Latouche
- Scuola Normale Superiore, piazza dei Cavalieri 7, I-56126 Pisa, Italy
| | - Marco Lessi
- Dipartimento di Chimica e Chimica Industriale, Universit di Pisa, via Moruzzi 13, I-56124 Pisa, Italy
| | - Giulia Marianetti
- Scuola Normale Superiore, piazza dei Cavalieri 7, I-56126 Pisa, Italy
- Dipartimento di Chimica e Chimica Industriale, Universit di Pisa, via Moruzzi 13, I-56124 Pisa, Italy
| | - Pierpaolo Minei
- Scuola Normale Superiore, piazza dei Cavalieri 7, I-56126 Pisa, Italy
- Dipartimento di Chimica e Chimica Industriale, Universit di Pisa, via Moruzzi 13, I-56124 Pisa, Italy
| | | | - Andrea Pucci
- Dipartimento di Chimica e Chimica Industriale, Universit di Pisa, via Moruzzi 13, I-56124 Pisa, Italy
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47
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Kaur N. Palladium-Catalyzed Approach to the Synthesis ofS-heterocycles. CATALYSIS REVIEWS-SCIENCE AND ENGINEERING 2015. [DOI: 10.1080/01614940.2015.1082824] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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48
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Xu X, Zhao L, Li Y, Soulé JF, Doucet H. IntermolecularversusIntramolecular Palladium-Catalyzed Direct Arylations between 1-(2-Bromobenzyl)imidazoles and Aryl Bromides. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201500332] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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49
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Structure-activity relationships for lipoprotein lipase agonists that lower plasma triglycerides in vivo. Eur J Med Chem 2015; 103:191-209. [PMID: 26355531 DOI: 10.1016/j.ejmech.2015.08.058] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2015] [Revised: 08/25/2015] [Accepted: 08/28/2015] [Indexed: 12/27/2022]
Abstract
The risk of cardiovascular events increases in individuals with elevated plasma triglyceride (TG) levels, therefore advocating the need for efficient TG-lowering drugs. In the blood circulation, TG levels are regulated by lipoprotein lipase (LPL), an unstable enzyme that is only active as a non-covalently associated homodimer. We recently reported on a N-phenylphthalimide derivative (1) that stabilizes LPL in vitro, and moderately lowers triglycerides in vivo (Biochem. Biophys. Res. Commun.2014, 450, 1063). Herein, we establish structure-activity relationships of 51 N-phenylphthalimide analogs of the screening hit 1. In vitro evaluation highlighted that modifications on the phthalimide moiety were not tolerated and that lipophilic substituents on the central phenyl ring were functionally essential. The substitution pattern on the central phenyl ring also proved important to stabilize LPL. However, in vitro testing demonstrated rapid degradation of the phthalimide fragment in plasma which was addressed by replacing the phthalimide scaffold with other heterocyclic fragments. The in vitro potency was retained or improved and substance 80 proved stable in plasma and efficiently lowered plasma TGs in vivo.
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50
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