1
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Skavenborg ML, Møller MS, Mossin S, Waite TD, McKenzie CJ. Sulfonamido-Pincer Complexes of Cu(II) and the Electrocatalysis of O 2 Reduction. Inorg Chem 2023; 62:12741-12749. [PMID: 37535840 DOI: 10.1021/acs.inorgchem.3c01262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/05/2023]
Abstract
Heteroleptic copper complexes of an asymmetrical pincer ligand containing a central anionic sulfonamide donor (pyridine-2-yl-sulfonyl)(quinolin-8-yl)-amide (psq), which contains a central anionic sulfonamido donor have been prepared. Meridional κ3-N,N″,N‴ binding with the co-ligands acetate, chloride, or acetonitrile (MeCN), trans to the central sulfonamido N-donor, is revealed by the X-ray crystal structures of [Cu(OAc)(psq)(H2O)], [CuCl(psq)]2, and [Cu(psq)(MeCN)](PF6). Either overall distorted square pyramidal or octahedral geometries of the copper atom are satisfied by coordinated water in the case of the acetate complex or interactions with periphery sulfonamido oxygen atoms on adjacent molecules in the dimeric chloride and 1D polymeric acetonitrile complexes. The cyclic voltammogram (CV) of [Cu(OAc)(psq)(H2O)] shows a quasi-reversible CuII/CuI reduction at -0.930 V (vs Fc+/Fc0, MeCN), and an irreversible CuII/CuI reduction for [Cu(psq)(MeCN)](PF6) is seen at -0.838 V. This signal is split into two quasi-reversible redox processes on the addition of 2,2,2-trifluoroethanol (TFE). This suggests that TFE pushes a solution equilibrium toward a dimeric acetate complex analogous to [CuCl(psq)]2, which shows two quasi-reversible waves at -0.666 V and -0.904 V vs Fc+/Fc0 consistent with its dimeric solid-state structure. A comparison of the CVs of [Cu(OAc)(psq)(H2O)] under either a N2 or an O2 atmosphere revealed that this complex catalyzes turnover electro-reduction of O2 to H2O2 and H2O. The rate of reaction increases on addition of a weak organic acid, and a coulombic efficiency of 48% for H2O2 was determined by iodometric titration. We propose that a CuI complex formed on electroreduction binds O2 to yield an intermediate superoxide complex. On electron and proton transfer to this species, a bifurcated route back to the O2-activating CuI complex is feasible with either release of H2O2 or O-O cleavage resulting in the liberation of H2O. The CuI complex is regenerated by subsequent reduction and protonation to close the cycle.
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Affiliation(s)
- Mathias L Skavenborg
- Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, 5230 Odense M, Denmark
- Water Research Centre, School of Civil and Environmental Engineering, University of New South Wales, Sydney, NSW 2052, Australia
| | - Mads Sondrup Møller
- Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, 5230 Odense M, Denmark
| | - Susanne Mossin
- Department of Chemistry, Technical University of Denmark, Kemitorvet, Building 207, 2800 Kgs Lyngby, Denmark
| | - T David Waite
- Water Research Centre, School of Civil and Environmental Engineering, University of New South Wales, Sydney, NSW 2052, Australia
| | - Christine J McKenzie
- Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, 5230 Odense M, Denmark
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2
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Hufnagel B, Zhu WF, Franz HM, Proschak E, Hernandez‐Olmos V. Phenolate-Induced N-O Bond Formation versus TiemannType Rearrangement for the Synthesis of 3-Aminobenzisoxazoles and 2-Aminobenzoxazoles. Chemistry 2022; 11:e202200252. [PMID: 36564354 PMCID: PMC9789021 DOI: 10.1002/open.202200252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 11/30/2022] [Indexed: 12/25/2022]
Abstract
A novel oxadiazolone-based method for the synthesis of 3-aminobenzisoxazoles by N-O bond formation and of 2-aminobenzoxazoles through a Tiemann-type rearrangement has been developed. The synthesis of these two pharmaceutically relevant heterocycles was realized by an unexplored retrosynthetic disconnection using a cyclic nitrenoid precursor-based strategy. The selective formation of the two isomers was significantly influenced by steric and electronic effects of substituents. However, tetrabutylammonium chloride (TBACl) efficiently promoted the Tiemann-type rearrangement over N-O bond formation. Control experiments indicate that deprotonation of the phenol induces both rearrangements.
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Affiliation(s)
- Benedikt Hufnagel
- Institute of Pharmaceutical ChemistryGoethe University FrankfurtMax-von-Laue-Str. 960438Frankfurt am MainGermany
| | - W. Felix Zhu
- Institute of Pharmaceutical ChemistryGoethe University FrankfurtMax-von-Laue-Str. 960438Frankfurt am MainGermany
| | - Hanna M. Franz
- Institute of Pharmaceutical ChemistryGoethe University FrankfurtMax-von-Laue-Str. 960438Frankfurt am MainGermany
| | - Ewgenij Proschak
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMPTheodor-Stern-Kai 760596Frankfurt am MainGermany,Institute of Pharmaceutical ChemistryGoethe University FrankfurtMax-von-Laue-Str. 960438Frankfurt am MainGermany
| | - Victor Hernandez‐Olmos
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMPTheodor-Stern-Kai 760596Frankfurt am MainGermany
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3
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Kotovshchikov YN, Binyakovsky AA, Latyshev GV, Lukashev NV, Beletskaya IP. Copper-catalyzed deacetonative Sonogashira coupling. Org Biomol Chem 2022; 20:7650-7657. [PMID: 36134515 DOI: 10.1039/d2ob01267g] [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
A convenient Pd- and phosphine-free protocol for assembling internal alkynes from tertiary propargyl alcohols and (het)aryl halides has been developed. The proposed tandem approach includes the base-promoted retro-Favorskii fragmentation followed by Cu-catalyzed C(sp)-C(sp2) cross-coupling. The use of inexpensive reagents (e.g. a catalyst, additives, a base, and a solvent) and good functional group tolerance make the procedure practical and cost-effective. The synthetic utility of the method was demonstrated by a smooth alkynylation of vinyl iodides derived from natural steroidal hormones.
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Affiliation(s)
- Yury N Kotovshchikov
- Chemistry Department, M. V. Lomonosov Moscow State University, Leninskiye Gory 1/3, Moscow 119991, Russia.
| | - Artem A Binyakovsky
- Chemistry Department, M. V. Lomonosov Moscow State University, Leninskiye Gory 1/3, Moscow 119991, Russia.
| | - Gennadij V Latyshev
- Chemistry Department, M. V. Lomonosov Moscow State University, Leninskiye Gory 1/3, Moscow 119991, Russia.
| | - Nikolay V Lukashev
- Chemistry Department, M. V. Lomonosov Moscow State University, Leninskiye Gory 1/3, Moscow 119991, Russia.
| | - Irina P Beletskaya
- Chemistry Department, M. V. Lomonosov Moscow State University, Leninskiye Gory 1/3, Moscow 119991, Russia.
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4
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Namdeo PK, Sheokand S, Kote BS, Radhakrishna L, Kunchur HS, Saini P, Ramakrishnan S, Balakrishna MS. Ru II complexes of 1,2,3-triazole appended tertiary phosphines, [P(Ph){( o-C 6H 4)(1,2,3-N 3C(Ph)CH} 2] and [P(Ph){ o-C 6H 4(CCH)-(1,2,3-N 3-Ph)} 2]: highly active catalysts for transfer hydrogenation of carbonyl/nitro compounds and for α-alkylation of ketones. Dalton Trans 2022; 51:6795-6808. [PMID: 35420618 DOI: 10.1039/d2dt00361a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The synthesis of two new 1,2,3-triazole appended monophosphines [P(Ph){(o-C6H4)(1,2,3-N3C(Ph)CH}2] (1) and [P(Ph){o-C6H4(CCH)(1,2,3-N3-Ph)}2] (2) and their RuII complexes is described. The reactions of 1 and 2 with [Ru(PPh3)3Cl2] in a 1 : 1 molar ratio produced cationic complexes 3 and 4, respectively. Both the complexes showed very high catalytic activity towards transfer hydrogenation, nitro reduction, and α-alkylation reactions and afforded the corresponding products in good to excellent yields. The free energy of β-hydride elimination from the respective Ru-alkoxide intermediates, a key mechanistic step common to all the three catalytic pathways, was calculated to be close to ergoneutral by density functional theory-based calculations, which is posited to rationalize the catalytic activity of 3. The reduction of aromatic nitro compounds was found to be highly chemoselective and produced the corresponding amines as major products even in the presence of a carbonyl group. The triazolyl-N2 coordinated RuII-NPN complex 3 showed better catalytic activity compared to the triazolyl-N3 coordinated complex 4.
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Affiliation(s)
- Pavan K Namdeo
- Phosphorus Laboratory, Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India.
| | - Sonu Sheokand
- Phosphorus Laboratory, Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India.
| | - Basvaraj S Kote
- Phosphorus Laboratory, Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India.
| | - Latchupatula Radhakrishna
- Phosphorus Laboratory, Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India.
| | - Harish S Kunchur
- Phosphorus Laboratory, Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India.
| | - Prateek Saini
- Phosphorus Laboratory, Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India.
| | - Srinivasan Ramakrishnan
- Phosphorus Laboratory, Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India.
| | - Maravanji S Balakrishna
- Phosphorus Laboratory, Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India.
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5
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Sudharsan M, Nethaji M, Bhuvanesh NS, Suresh D. Heteroleptic Palladium(II) Complexes of Thiazolinyl‐picolinamide Derived N
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N
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N Pincer Ligand: An Efficient Catalyst for Acylative Suzuki Coupling Reactions. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100490] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Murugesan Sudharsan
- Department of Chemistry School of Chemical and Biotechnology SASTRA Deemed University Thanjavur Tamil Nadu 613 401 India
| | - Munirathinam Nethaji
- Department of Inorganic and Physical Chemistry Indian Institute of Science Bangalore Karnataka 560 012 India
| | | | - Devarajan Suresh
- Department of Chemistry School of Chemical and Biotechnology SASTRA Deemed University Thanjavur Tamil Nadu 613 401 India
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6
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Mohammadnezhad G, Amirian AM, Görls H, Plass W, Sandleben A, Schäfer S, Klein A. Redox Instability of Copper(II) Complexes of a Triazine‐Based PNP Pincer. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202001129] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
| | - Ali Mohammad Amirian
- Department of Chemistry Isfahan University of Technology Isfahan 84156-83111 Iran
- Chemistry Department Faculty of Science Shiraz University Shiraz 71454 Iran
| | - Helmar Görls
- Lehrstuhl für Anorganische Chemie II Institut für Anorganische und Analytische Chemie Friedrich-Schiller-Universität Jena Humboldtstr. 8 07743 Jena Germany
| | - Winfried Plass
- Lehrstuhl für Anorganische Chemie II Institut für Anorganische und Analytische Chemie Friedrich-Schiller-Universität Jena Humboldtstr. 8 07743 Jena Germany
| | - Aaron Sandleben
- Department für Chemie Institut für Anorganische Chemie Universität zu Köln Greinstraße 6 50939 Köln Germany
| | - Sascha Schäfer
- Department für Chemie Institut für Anorganische Chemie Universität zu Köln Greinstraße 6 50939 Köln Germany
| | - Axel Klein
- Chemistry Department Faculty of Science Shiraz University Shiraz 71454 Iran
- Department für Chemie Institut für Anorganische Chemie Universität zu Köln Greinstraße 6 50939 Köln Germany
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7
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Kim KM, Kim KM. Copper Catalyzed
N
‐Arylation of Amines in Ionic Liquid Using 1‐Aryltriazenes as Aryl Surrogates. ChemistrySelect 2021. [DOI: 10.1002/slct.202100180] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Kang M. Kim
- Department of Pharmaceutical Science and Technology Kyungsung University Busan 48434 Republic of Korea
| | - Kang Min Kim
- Department of Pharmaceutical Science and Technology Kyungsung University Busan 48434 Republic of Korea
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8
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Tanimori S, Nariki H, Miyamura T, Matsui D, Sonoda M. Iodine-Mediated Facile One-Pot Access to N-Aryl-2-benzoxazolamines. SYNOPEN 2020. [DOI: 10.1055/s-0040-1705982] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
Abstract
AbstractFacile, iodine-mediated access to N-aryl-2-benzoxazolamines has been achieved in a one-pot manner under mild reaction conditions. Reaction of 2-aminophenols and aryl isothiocyanates afforded N-aryl-2-benzoxazolamines in the presence of molecular iodine and pyridine in tetrahydrofuran at room temperature in moderate to excellent yields.
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9
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Cao M, Teng QH, Xi ZW, Liu LQ, Gu RY, Wang YC. Facile synthesis of 2-alkynyl oxazoles via a Ce(OTf) 3-catalyzed cascade reaction of alkynyl carboxylic acids with tert-butyl isocyanide. Org Biomol Chem 2020; 18:655-659. [PMID: 31930236 DOI: 10.1039/c9ob02337b] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
We developed an efficient and novel protocol to synthesize 2-alkynyl oxazoles from tert-butyl isocyanide and alkynyl carboxylic acids. This method allowed the synthesis of diversely functionalized oxazoles under mild reaction conditions, coupled with operational simplicity and these functionalized oxazoles showed a certain degree of biological activity. Moreover, compounds 2b, 2h, 2k, 2n, 2p and 2t exhibited good anticancer activities in human gastric cancer cells (MGC803) and human bladder tumor cells (T24), with IC50 below 20.0 μM.
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Affiliation(s)
- Ming Cao
- National Demonstration Center for Experimental Chemistry Education, Hunan Engineering Laboratory for Analyse and Drugs Development of Ethnomedicine in Wuling Mountains, Jishou University, Jishou 416000, P. R. China.
| | - Qing-Hu Teng
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, People's Republic of China
| | - Zhi-Wei Xi
- National Demonstration Center for Experimental Chemistry Education, Hunan Engineering Laboratory for Analyse and Drugs Development of Ethnomedicine in Wuling Mountains, Jishou University, Jishou 416000, P. R. China.
| | - Li-Qiu Liu
- National Demonstration Center for Experimental Chemistry Education, Hunan Engineering Laboratory for Analyse and Drugs Development of Ethnomedicine in Wuling Mountains, Jishou University, Jishou 416000, P. R. China.
| | - Ren-Yong Gu
- National Demonstration Center for Experimental Chemistry Education, Hunan Engineering Laboratory for Analyse and Drugs Development of Ethnomedicine in Wuling Mountains, Jishou University, Jishou 416000, P. R. China.
| | - Ying-Chun Wang
- National Demonstration Center for Experimental Chemistry Education, Hunan Engineering Laboratory for Analyse and Drugs Development of Ethnomedicine in Wuling Mountains, Jishou University, Jishou 416000, P. R. China.
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10
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Adam MSS, El-Hady OM, Ullah F. Biological and catalytic potential of sustainable low and high valent metal-Schiff base sulfonate salicylidene pincer complexes. RSC Adv 2019; 9:34311-34329. [PMID: 35529964 PMCID: PMC9074042 DOI: 10.1039/c9ra06816c] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Accepted: 10/19/2019] [Indexed: 01/22/2023] Open
Abstract
ONO-Pincer Schiff base salicylidene (HSaln ligand) complexes with VO2+, UO2 2+, MoO2 2+ and Mn2+ ions (MSaln complexes = VOSaln, UO2Saln, MoO2Saln and MnSaln, respectively) were synthesized and fully characterized by different physico-chemical tools. The VOSaln complex was further treated with 1,10-phenanthroline which afforded a new VO-complex (VOSaln-Ph). All complexes and their ligands, as eco-friendly reagents, were explored for their biological potential as antibacterial and antifungal agents. Reactivity of MSaln complexes against the tested pathogen strains exhibited a remarkable inhibitory effect compared to the coordinated ligand (HSaln) and applicable standard drugs. Moreover, the MSaln complex-DNA interaction was investigated by ultraviolet-visible spectroscopy, viscosity and gel electrophoresis techniques affording binding strengths in the order: UO2Saln > MnSaln > MoO2Saln > VOSaln-Ph > VOSaln. Additionally, the biological potential of the investigated compounds was further explored by molecular docking to illustrate the nature of the drug-DNA interactions. All MSaln complexes show respectable anti-proliferative potential as anticancer agents against selected human carcinoma cell lines. Aside from the biological activities these complexes (MSaln complexes) were also investigated for catalytic efficiency in the Suzuki-Miyaura cross-coupling system of phenylboronic acid with 2-bromopyridine in water, sustainably. The results indicated that the MnSaln catalyst performed well with high yield. The catalytic potential of MnSaln was compared in water, water-ionic liquid mixtures and ionic liquids.
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Affiliation(s)
- Mohamed Shaker S Adam
- Department of Chemistry, College of Science, King Faisal University P. O. Box 380, Al Hofuf Al Ahsa 31982 Saudi Arabia
- Chemistry Department, Faculty of Science, Sohag University Sohag-82534 Egypt
| | - Omar M El-Hady
- Chemistry Department, Faculty of Science, Sohag University Sohag-82534 Egypt
| | - Farman Ullah
- Department of Chemistry, Winnipeg University 515 Portage Avenue Winnipeg Manitoba R3B 2E9 Canada
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11
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Sapegin A, Krasavin M. One-Pot Conversion of Aldehydes and Aryl Halides to Disubstituted Alkynes via Tandem Seyferth–Gilbert Homologation/Copper-Free Sonogashira Coupling. J Org Chem 2019; 84:8788-8795. [DOI: 10.1021/acs.joc.9b01367] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
| | - Mikhail Krasavin
- Saint Petersburg State University, Saint Petersburg 199034, Russia
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12
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Abd El‐Lateef HM, Sayed AR, Adam MSS. Sulfonated salicylidene thiadiazole complexes with Co (II) and Ni (II) ions as sustainable corrosion inhibitors and catalysts for cross coupling reaction. Appl Organomet Chem 2019. [DOI: 10.1002/aoc.4987] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Hany M. Abd El‐Lateef
- Department of Chemistry, College of ScienceKing Faisal University P.O. Box 380 Al Hufuf 31982 Al Hassa Saudi Arabia
- Chemistry Department, Faculty of ScienceSohag University Sohag 82534 Egypt
| | - Abdelwahed R. Sayed
- Department of Chemistry, College of ScienceKing Faisal University P.O. Box 380 Al Hufuf 31982 Al Hassa Saudi Arabia
- Department of Chemistry, Faculty of ScienceUniversity of Beni Suef Egypt
| | - Mohamed Shaker S. Adam
- Department of Chemistry, College of ScienceKing Faisal University P.O. Box 380 Al Hufuf 31982 Al Hassa Saudi Arabia
- Chemistry Department, Faculty of ScienceSohag University Sohag 82534 Egypt
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13
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Kumar LM, Mishra P, Bhat BR. RETRACTED ARTICLE: Fe–PNP Pincer Complex Immobilized on Graphene Oxide as a Catalyst for Suzuki–Miyaura Coupling Reactions. Catal Letters 2019. [DOI: 10.1007/s10562-019-02652-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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14
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Chand S, Kumar S, Singh R, Singh KN. A Practical Copper Catalyzed
N
‐Arylation of Amines Using Aryl Triazenes as Aryl Source. ChemistrySelect 2019. [DOI: 10.1002/slct.201803356] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Shiv Chand
- Department of Chemistry (Centre of Advanced Study)Institute of ScienceBanaras Hindu University Varanasi 221005 India
| | - Saurabh Kumar
- Department of Chemistry (Centre of Advanced Study)Institute of ScienceBanaras Hindu University Varanasi 221005 India
| | - Rahul Singh
- Department of Chemistry (Centre of Advanced Study)Institute of ScienceBanaras Hindu University Varanasi 221005 India
| | - Krishna Nand Singh
- Department of Chemistry (Centre of Advanced Study)Institute of ScienceBanaras Hindu University Varanasi 221005 India
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15
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Gupta S, Dubey P, Singh AK, Jain N. Oxidative C–C bond formation and C–N bond cleavage catalyzed by complexes of copper(i) with acridine based (E N E) pincers (E = S/Se), recyclable as a catalyst. Dalton Trans 2019; 48:10129-10137. [DOI: 10.1039/c9dt01766f] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Structurally characterized 1 mol% Cu(i)-complexes efficiently catalyze the coupling of tertiary amines with terminal alkynes and C–N bond cleavage.
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Affiliation(s)
- Sonu Gupta
- Department of Chemistry
- Indian Institute of Technology
- Delhi
- New Delhi 110016
- India
| | - Pooja Dubey
- Department of Chemistry
- Indian Institute of Technology
- Delhi
- New Delhi 110016
- India
| | - Ajai K. Singh
- Department of Chemistry
- Indian Institute of Technology
- Delhi
- New Delhi 110016
- India
| | - Nidhi Jain
- Department of Chemistry
- Indian Institute of Technology
- Delhi
- New Delhi 110016
- India
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16
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Ren C, Zeng J, Zou G. Nickel-catalyzed cross-coupling of O,N-chelated diarylborinates with aryl chlorides and mesylates. NEW J CHEM 2019. [DOI: 10.1039/c8nj05503c] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Practical nickel catalysis for efficient cross-coupling of O,N-chelated diarylborinates with aryl chlorides and mesylates based on air-stable yet readily activated organonickel precursor, trans-NiCl(Ph)(PPh3)2, and sterically unsymmetrical N-heterocyclic carbene in situ generated from imidazolium precursor with trihydrate potassium phosphate in toluene.
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Affiliation(s)
- Chao Ren
- School of Chemistry & Molecular Engineering
- East China University of Science & Technology
- 130 Meilong Rd
- Shanghai
- China
| | - Jingshu Zeng
- School of Chemistry & Molecular Engineering
- East China University of Science & Technology
- 130 Meilong Rd
- Shanghai
- China
| | - Gang Zou
- School of Chemistry & Molecular Engineering
- East China University of Science & Technology
- 130 Meilong Rd
- Shanghai
- China
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17
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Yadav S, Singh A, Rashid N, Ghotia M, Roy TK, Ingole PP, Ray S, Mobin SM, Dash C. Phosphine-Free Bis(Pyrrolyl)pyridine Based NNN-Pincer Palladium(II) Complexes as Efficient Catalysts for Suzuki-Miyaura Cross-Coupling Reactions of Aryl Bromides in Aqueous Medium. ChemistrySelect 2018. [DOI: 10.1002/slct.201801647] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Seema Yadav
- Department of Chemistry; School of Chemical Sciences and Pharmacy; Central University of Rajasthan, Bandarsindri; India
| | - Ajeet Singh
- Department of Chemistry; Indian Institute of Technology (IIT) Indore, Simrol; Khandwa Road Indore - 453552 India
| | - Nusrat Rashid
- Department of Chemistry; Indian Institute of Technology, Delhi, Hauz Khas; New Delhi 110016 India
| | - Maheshwari Ghotia
- Department of Chemistry; School of Chemical Sciences and Pharmacy; Central University of Rajasthan, Bandarsindri; India
| | - Tapta Kanchan Roy
- Department of Chemistry and Chemical Sciences; Central University of Jammu; Jammu-180001 India
| | - Pravin P. Ingole
- Department of Chemistry; Indian Institute of Technology, Delhi, Hauz Khas; New Delhi 110016 India
| | - Sriparna Ray
- Department of Chemistry; School of Basic Sciences; Manipal University; Jaipur-303007 India
| | - Shaikh M. Mobin
- Department of Chemistry; Indian Institute of Technology (IIT) Indore, Simrol; Khandwa Road Indore - 453552 India
| | - Chandrakanta Dash
- Department of Chemistry; School of Chemical Sciences and Pharmacy; Central University of Rajasthan, Bandarsindri; India
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18
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Hosseini SH, Zohreh N, Alipour S, Busuioc C, Negrea R. Gold nanoparticles stabilized on SBA-15 functionalized NNN-pincer ligand; highly effective catalyst for reduction of nitroarenes in aqueous medium. CATAL COMMUN 2018. [DOI: 10.1016/j.catcom.2018.01.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
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19
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Singh C, Prakasham AP, Gangwar MK, Butcher RJ, Ghosh P. One-Pot Tandem Hiyama Alkynylation/Cyclizations by Palladium(II) Acyclic Diaminocarbene (ADC) Complexes Yielding Biologically Relevant Benzofuran Scaffolds. ACS OMEGA 2018; 3:1740-1756. [PMID: 31458491 PMCID: PMC6641338 DOI: 10.1021/acsomega.7b01974] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Accepted: 01/23/2018] [Indexed: 06/10/2023]
Abstract
A series of palladium acyclic diaminocarbene (ADC) complexes of the type cis-[(R1NH)(R2)methylidene]PdCl2(CNR1) [R1 = 2,4,6-(CH3)3C6H2: R2 = NC5H10 (2); NC4H8 (3); NC4H8O (4)] were used not only to perform the Csp2 -Csp Hiyama coupling between aryl iodide and triethoxysilylalkynes but also to subsequently carry out the one-pot tandem Hiyama alkynylation/cyclization reaction between 2-iodophenol and triethoxysilylalkynes, giving a convenient time-efficient access to the biologically relevant benzofuran compounds. The palladium ADC complexes (2-4) were conveniently synthesized by the nucleophilic addition of secondary amines, namely, piperidine, pyrrolidine, and morpholine on the cis-{(2,4,6-(CH3)3C6H2)NC}2PdCl2 in moderate yields (ca. 61-66%).
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Affiliation(s)
- Chandan Singh
- Department
of Chemistry, Indian Institute of Technology
Bombay, Powai, Mumbai 400 076, India
| | - A. P. Prakasham
- Department
of Chemistry, Indian Institute of Technology
Bombay, Powai, Mumbai 400 076, India
| | - Manoj Kumar Gangwar
- Department
of Chemistry, Indian Institute of Technology
Bombay, Powai, Mumbai 400 076, India
| | - Raymond J. Butcher
- Department
of Chemistry, Howard University, Washington DC 20059, United States
| | - Prasenjit Ghosh
- Department
of Chemistry, Indian Institute of Technology
Bombay, Powai, Mumbai 400 076, India
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20
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Pandiri H, Gonnade RG, Punji B. Synthesis of quinolinyl-based pincer copper(ii) complexes: an efficient catalyst system for Kumada coupling of alkyl chlorides and bromides with alkyl Grignard reagents. Dalton Trans 2018; 47:16747-16754. [DOI: 10.1039/c8dt03210f] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Well-defined quinolinamide-based pincer copper complexes have been developed and demonstrated in the Kumada coupling reaction of nonactivated alkyl chlorides and bromides with alkyl magnesium chloride.
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Affiliation(s)
- Hanumanprasad Pandiri
- Organometallic Synthesis and Catalysis Group
- Chemical Engineering Division
- India
- Academy of Scientific and Innovative Research (AcSIR)
- New Delhi 110 020
| | - 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
- India
- Academy of Scientific and Innovative Research (AcSIR)
- New Delhi 110 020
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21
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Maddali LNR, Meka S. Cross-coupling reactivity of 1,1-dichloroalkenes under palladium catalysis: domino synthesis of diarylalkynes. NEW J CHEM 2018. [DOI: 10.1039/c7nj05107g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient synthesis of diarylalkynes was achieved from the domino cross-coupling reaction of 1,1-dichloroalkenes with triarylbismuth reagents under palladium-catalyzed conditions.
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Affiliation(s)
- L. N. Rao Maddali
- Department of Chemistry, Indian Institute of Technology Kanpur
- Kanpur-208 016
- India
| | - Suresh Meka
- Department of Chemistry, Indian Institute of Technology Kanpur
- Kanpur-208 016
- India
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22
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Cheisson T, Mazaud L, Auffrant A. Ruthenium complexes featuring cooperative phosphine–pyridine–iminophosphorane (PNN) ligands: synthesis, reactivity and catalytic activity. Dalton Trans 2018; 47:14521-14530. [DOI: 10.1039/c8dt03488e] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Ruthenium complexes with an iminophosphorane based (PNN) ligand; the NP substituent influences the coordination and the reactivity of the formed complexes.
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Affiliation(s)
- Thibault Cheisson
- LCM
- CNRS-Ecole polytechnique
- Université Paris-Saclay
- F-91128 Palaiseau Cedex
- France
| | - Louis Mazaud
- LCM
- CNRS-Ecole polytechnique
- Université Paris-Saclay
- F-91128 Palaiseau Cedex
- France
| | - Audrey Auffrant
- LCM
- CNRS-Ecole polytechnique
- Université Paris-Saclay
- F-91128 Palaiseau Cedex
- France
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23
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Kumar LM, Ansari RM, Bhat BR. Retracted
: Catalytic activity of Fe(II) and Cu(II) PNP pincer complexes for Suzuki coupling reaction. Appl Organomet Chem 2017. [DOI: 10.1002/aoc.4054] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Lolakshi Mahesh Kumar
- Catalysis and Materials Laboratory, Department of ChemistryNational Institute of Technology Karnataka Surathkal Srinivasnagar ‐575025 India
| | - Rasheeda M. Ansari
- Catalysis and Materials Laboratory, Department of ChemistryNational Institute of Technology Karnataka Surathkal Srinivasnagar ‐575025 India
| | - Badekai Ramachandra Bhat
- Catalysis and Materials Laboratory, Department of ChemistryNational Institute of Technology Karnataka Surathkal Srinivasnagar ‐575025 India
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