1
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Titov AA, Smol'yakov AF, Chernyadyev AY, Godovikov IA, Filippov OA, Shubina ES. Pyrazolate vs. phenylethynide: direct exchange of the anionic bridging ligand in a cyclic trinuclear silver complex. Chem Commun (Camb) 2024; 60:847-850. [PMID: 38131431 DOI: 10.1039/d3cc05659g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2023]
Abstract
Cyclic trinuclear Ag(I) pyrazolate interacts with phenylacetylene forming a mix-ligand complex in which one pyrazolate ligand is changed to phenylethynide. The CC- fragment coordinates only to two silver(I) atoms via one carbon atom demonstrating unique μ2-η1 σ-coordination with close Ag-C bond lengths and Ag-C-C angles. The complex exhibits blue emission under UV irradiation.
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Affiliation(s)
- Aleksei A Titov
- A.N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences (INEOS RAS), 119991 Moscow, Vavilov St. 28, bld. 1, Russia.
| | - Alexander F Smol'yakov
- A.N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences (INEOS RAS), 119991 Moscow, Vavilov St. 28, bld. 1, Russia.
- Plekhanov Russian University of Economics, Stremyanny per. 36, Moscow 117997, Russia
| | - Andrey Yu Chernyadyev
- A. N. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninsky prosp. 31/4, 199071 Moscow, Russia
| | - Ivan A Godovikov
- A.N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences (INEOS RAS), 119991 Moscow, Vavilov St. 28, bld. 1, Russia.
| | - Oleg A Filippov
- A.N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences (INEOS RAS), 119991 Moscow, Vavilov St. 28, bld. 1, Russia.
| | - Elena S Shubina
- A.N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences (INEOS RAS), 119991 Moscow, Vavilov St. 28, bld. 1, Russia.
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2
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Yu J, Chen W, He F, Song W, Cao C. Electronic Oxide-Support Strong Interactions in the Graphdiyne-Supported Cuprous Oxide Nanocluster Catalyst. J Am Chem Soc 2023; 145:1803-1810. [PMID: 36638321 DOI: 10.1021/jacs.2c10976] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
The interfacial interaction in supported catalysts is of great significance for heterogeneous catalysis because it can induce charge transfer, regulate electronic structure of active sites, influence reactant adsorption behavior, and eventually affect the catalytic performance. It has been theoretically and experimentally elucidated well in metal/oxide catalysts and oxide/metal inverse catalysts, but is rarely reported in carbon-supported catalysts due to the inertness of traditional carbon materials. Using an example of a graphdiyne-supported cuprous oxide nanocluster catalyst (Cu2O NCs/GDY), we herein demonstrate the strong electronic interaction between them and put forward a new type of electronic oxide-graphdiyne strong interaction, analogous to the concept of electronic oxide/metal strong interactions in oxide/metal inverse catalysts. Such electronic oxide-graphdiyne strong interaction can not only stabilize Cu2O NCs in a low-oxidation state without aggregation and oxidation under ambient conditions but also change their electronic structure, resulting in the optimized adsorption energy for reactants/intermediates and thus leading to improved catalytic activity in the Cu(I)-catalyzed azide-alkyne cycloaddition reaction. Our study will contribute to the comprehensive understanding of interfacial interactions in supported catalysts.
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Affiliation(s)
- Jia Yu
- Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular Sciences, CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China.,University of Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Weiming Chen
- Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular Sciences, CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China.,University of Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Feng He
- Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular Sciences, CAS Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Weiguo Song
- Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular Sciences, CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China.,University of Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Changyan Cao
- Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular Sciences, CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China.,University of Chinese Academy of Sciences, Beijing 100190, P. R. China
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3
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Tetranuclear Copper(I) and Silver(I) Pyrazolate Adducts with 1,1'-Dimethyl-2,2'-bibenzimidazole: Influence of Structure on Photophysics. Molecules 2023; 28:molecules28031189. [PMID: 36770855 PMCID: PMC9920877 DOI: 10.3390/molecules28031189] [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: 12/29/2022] [Revised: 01/18/2023] [Accepted: 01/22/2023] [Indexed: 01/27/2023] Open
Abstract
A reaction of a cyclic trinuclear copper(I) or silver(I) pyrazolate complex ([MPz]3, M = Cu, Ag) with 1,1'-dimethyl-2,2'-bibenzimidazole (L) leads to the formation of tetranuclear adducts decorated by one or two molecules of a diimine ligand, depending on the amount of the ligand added (0.75 or 1.5 equivalents). The coordination of two L molecules stabilizes the formation of a practically idealized tetrahedral four-metal core in the case of a copper-containing complex and a distorted tetrahedron in the case of a Ag analog. In contrast, complexes containing one molecule of diimine possess two types of metals, two- and three-coordinated, forming the significantly distorted central M4 cores. The diimine ligands are twisted in these complexes with dihedral angles of ca. 50-60°. A TD-DFT analysis demonstrated the preference of a triplet state for the twisted 1,1'-dimethyl-2,2'-bibenzimidazole and a singlet state for the planar geometry. All obtained complexes demonstrated, in a solution, the blue fluorescence of the ligand-centered (LC) nature typical for free diimine. In contrast, a temperature decrease to 77 K stabilized the structure close to that observed in the solid state and activated the triplet states, leading to green phosphorescence at ca. 500 nm. The silver-containing complex Ag4Pz4L exhibited dual emission from both the singlet and triplet states, even at room temperature.
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4
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Arsenov MA, Stoletova NV, Savel'yeva TF, Smol'yakov AF, Maleev VI, Loginov DA, Larionov VA. An asymmetric metal-templated route to amino acids with an isoquinolone core via a Rh(III)-catalyzed coupling of aryl hydroxamates with chiral propargylglycine Ni(II) complexes. Org Biomol Chem 2022; 20:9385-9391. [PMID: 36394513 DOI: 10.1039/d2ob01970a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
A general protocol for the asymmetric synthesis of artificial amino acids (AAs) comprising an isoquinolone skeleton was successfully elaborated via a straightforward Rh(III)-catalyzed C-H activation/annulation of various aryl hydroxamates with a series of robust chiral propargylglycine Ni(II) complexes derived from glycine (Gly), alanine (Ala) and phenylalanine (Phe) in a green solvent (methanol) under mild conditions (at room temperature under air). Notably, in the case of phenylalanine-derived complexes, the formation of unfavorable 4-substituted isoquinolone regioisomers was achieved by a catalyst control for the first time. The subsequent acidic decomposition of the obtained Ni(II) complexes provides the target unnatural α- and α,α-disubstituted AAs with an isoquinolone core in an enantiopure form.
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Affiliation(s)
- Mikhail A Arsenov
- A.N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences (INEOS RAS), Vavilov Str. 28, 119991 Moscow, Russian Federation.
| | - Nadezhda V Stoletova
- A.N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences (INEOS RAS), Vavilov Str. 28, 119991 Moscow, Russian Federation.
| | - Tat'yana F Savel'yeva
- A.N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences (INEOS RAS), Vavilov Str. 28, 119991 Moscow, Russian Federation.
| | - Alexander F Smol'yakov
- A.N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences (INEOS RAS), Vavilov Str. 28, 119991 Moscow, Russian Federation. .,Plekhanov Russian University of Economics, Stremyanny Per. 36, 117997 Moscow, Russian Federation
| | - Victor I Maleev
- A.N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences (INEOS RAS), Vavilov Str. 28, 119991 Moscow, Russian Federation.
| | - Dmitry A Loginov
- A.N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences (INEOS RAS), Vavilov Str. 28, 119991 Moscow, Russian Federation. .,Plekhanov Russian University of Economics, Stremyanny Per. 36, 117997 Moscow, Russian Federation
| | - Vladimir A Larionov
- A.N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences (INEOS RAS), Vavilov Str. 28, 119991 Moscow, Russian Federation. .,Peoples' Friendship University of Russia (RUDN University), Miklukho-Maklaya Str. 6, 117198 Moscow, Russian Federation
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5
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Gugkaeva ZT, Mardiyan ZZ, Smol'yakov AF, Poghosyan AS, Saghyan AS, Maleev VI, Larionov VA. Sequential Heck Cross-Coupling and Hydrothiolation Reactions Taking Place in the Ligand Sphere of a Chiral Dehydroalanine Ni(II) Complex: Asymmetric Route to β-Aryl Substituted Cysteines. Org Lett 2022; 24:6230-6235. [PMID: 35950978 DOI: 10.1021/acs.orglett.2c02591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A practically useful protocol for the asymmetric synthesis of artificial β-aryl-substituted cysteine derivatives was developed through sequential Pd(II)-catalyzed Heck cross-coupling with aryl iodides and hydrothiolation reaction with various alkyl thiols in the presence of triethylamine taking place in the ligand sphere of a robust and bench-stable chiral dehydroalanine Ni(II) complex. The subsequent acidic decomposition of the single diastereomeric Ni(II) complexes led to the target enantiopure cysteine derivatives.
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Affiliation(s)
- Zalina T Gugkaeva
- A. N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences, Vavilov Str. 28, 119991 Moscow, Russian Federation
| | - Zorayr Z Mardiyan
- SPC "Armbiotechnology" SNPO NAS RA, Gyurjyan Str. 14, 0056 Yerevan, Armenia
| | - Alexander F Smol'yakov
- A. N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences, Vavilov Str. 28, 119991 Moscow, Russian Federation.,Plekhanov Russian University of Economics, Stremyanny Per. 36, 117997 Moscow, Russian Federation
| | | | - Ashot S Saghyan
- SPC "Armbiotechnology" SNPO NAS RA, Gyurjyan Str. 14, 0056 Yerevan, Armenia
| | - Victor I Maleev
- A. N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences, Vavilov Str. 28, 119991 Moscow, Russian Federation
| | - Vladimir A Larionov
- A. N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences, Vavilov Str. 28, 119991 Moscow, Russian Federation.,Peoples' Friendship University of Russia (RUDN University), Miklukho-Maklaya Str. 6, 117198 Moscow, Russian Federation
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6
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González-Lainez M, Gallegos M, Munarriz J, Azpiroz R, Passarelli V, Jiménez MV, Pérez-Torrente JJ. Copper-Catalyzed Azide–Alkyne Cycloaddition (CuAAC) by Functionalized NHC-Based Polynuclear Catalysts: Scope and Mechanistic Insights. Organometallics 2022; 41:2154-2169. [PMID: 35971402 PMCID: PMC9374069 DOI: 10.1021/acs.organomet.2c00246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Indexed: 12/02/2022]
Abstract
![]()
Copper(I) [Cu2(μ-Br)2(tBuImCH2pyCH2L)]n (L = OMe,
NEt2, NHtBu) compounds supported by flexible
functionalized NHC-based polydentate ligands have been prepared in
a one-pot procedure by reacting the corresponding imidazolium salt
with an excess of copper powder and Ag2O. An X-ray diffraction
analysis has revealed that
[Cu2(μ-Br)2(tBuImCH2pyCH2NEt2)]n is
a linear coordination polymer formed by bimetallic [Cu(μ-Br)]2 units linked by the lutidine-based NHC-py-NEt2 ligand, which acts as a heteroditopic ligand with a 1κC-2κ2N,N′ coordination
mode. We propose that the polymeric compounds break down in the solution
into more compact tetranuclear [Cu2(μ-Br)2(tBuImCH2pyCH2L)]2 compounds
with a coordination mode identical to the functionalized NHC ligands.
These compounds have been found to exhibit high catalytic activity
in the Cu-catalyzed azide–alkyne cycloaddition (CuAAC) reaction.
In particular, [Cu2(μ-Br)2(tBuImCH2pyCH2NEt2)]2 efficiently
catalyzes the click reaction of a range of azides and alkynes, under
an inert atmosphere at room temperature in neat conditions at a very
low catalyst loading, to quantitatively afford the corresponding 1,4-disubstituted
1,2,3-triazole derivatives in a few minutes. The cycloaddition reaction
of benzyl azide to phenylacetylene can be performed at 25–50
ppm catalyst loading by increasing the reaction time and/or temperature.
Reactivity studies have shown that the activation of the polynuclear
catalyst precursor involves the alkyne deprotonation by the NHC moiety
of the polydentate ligand to afford a copper(I)-alkynyl species bearing
a functionalized imidazolium ligand. DFT calculations support the
participation of the dinuclear species [(CuBr)2(μ-tBuImCH2pyCH2NEt2)], resulting
from the fragmentation of the tetranuclear compound, as the catalytically
active species. The proposed reaction pathway proceeds through zwitterionic
dinuclear intermediates and entails the active participation of both
copper atoms, as well as the NHC moiety as an internal base, which
activates the reacting alkyne via deprotonation.
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Affiliation(s)
- Miguel González-Lainez
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea-ISQCH, Universidad de Zaragoza-C.S.I.C., 50009 Zaragoza, Spain
| | - Miguel Gallegos
- Departamento de Química Física y Analítica, Universidad de Oviedo, 33006 Oviedo, Spain
| | - Julen Munarriz
- Departamento de Química Física y Analítica, Universidad de Oviedo, 33006 Oviedo, Spain
| | - Ramón Azpiroz
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea-ISQCH, Universidad de Zaragoza-C.S.I.C., 50009 Zaragoza, Spain
| | - Vincenzo Passarelli
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea-ISQCH, Universidad de Zaragoza-C.S.I.C., 50009 Zaragoza, Spain
| | - M. Victoria Jiménez
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea-ISQCH, Universidad de Zaragoza-C.S.I.C., 50009 Zaragoza, Spain
| | - Jesús J. Pérez-Torrente
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea-ISQCH, Universidad de Zaragoza-C.S.I.C., 50009 Zaragoza, Spain
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7
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Wang Z, Zhou X, Gong S, Xie J. MOF-Derived Cu@N-C Catalyst for 1,3-Dipolar Cycloaddition Reaction. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:1070. [PMID: 35407188 PMCID: PMC9000828 DOI: 10.3390/nano12071070] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Revised: 03/18/2022] [Accepted: 03/22/2022] [Indexed: 02/06/2023]
Abstract
Cu(im)2-derived Cu@N-C composites were used for the first time as efficient heterogeneous catalysts for one-pot 1,3-dipolar cycloaddition of terminal alkynes, aryl halides, and sodium azide to preparation of 1,4-disubstituted 1,2,3-triazoles with broad substrate scope and high yields. The catalyst can be easily reused without the changes of structure and morphology, and the heterogeneity nature was confirmed from the catalyst recyclability and metal leaching test.
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Affiliation(s)
- Zhuangzhuang Wang
- College of Chemistry and Bioengineering, Hunan University of Science and Engineering, Yongzhou 425199, China;
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, China;
| | - Xuehao Zhou
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, China;
| | - Shaofeng Gong
- College of Chemistry and Bioengineering, Hunan University of Science and Engineering, Yongzhou 425199, China;
| | - Jianwei Xie
- College of Chemistry and Bioengineering, Hunan University of Science and Engineering, Yongzhou 425199, China;
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, China;
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8
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Xia RQ, Zheng J, Wei RJ, He J, Ye DQ, Li MD, Ning GH, Li D. Strong visible-light-absorbing Bodipy-based Cu(I) cyclic trinuclear sensitizers for photocatalysis. Inorg Chem Front 2022. [DOI: 10.1039/d2qi00353h] [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
Exploring earth-abundant photosensitizers (PSs) with strong visible-light absorption is a long-standing interest, yet still challenging. Although copper(I) cyclic trinuclear complexes (Cu-CTCs) have exhibited fascinating photoluminescence properties, their potential application as...
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9
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Noonikara-Poyil A, Muñoz-Castro A, Dias HVR. Terminal and Internal Alkyne Complexes and Azide-Alkyne Cycloaddition Chemistry of Copper(I) Supported by a Fluorinated Bis(pyrazolyl)borate. MOLECULES (BASEL, SWITZERLAND) 2021; 27:molecules27010016. [PMID: 35011246 PMCID: PMC8746352 DOI: 10.3390/molecules27010016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Revised: 12/17/2021] [Accepted: 12/18/2021] [Indexed: 12/19/2022]
Abstract
Copper plays an important role in alkyne coordination chemistry and transformations. This report describes the isolation and full characterization of a thermally stable, copper(I) acetylene complex using a highly fluorinated bis(pyrazolyl)borate ligand support. Details of the related copper(I) complex of HC≡CSiMe3 are also reported. They are three-coordinate copper complexes featuring η2-bound alkynes. Raman data show significant red-shifts in C≡C stretch of [H2B(3,5-(CF3)2Pz)2]Cu(HC≡CH) and [H2B(3,5-(CF3)2Pz)2]Cu(HC≡CSiMe3) relative to those of the corresponding alkynes. Computational analysis using DFT indicates that the Cu(I) alkyne interaction in these molecules is primarily of the electrostatic character. The π-backbonding is the larger component of the orbital contribution to the interaction. The dinuclear complexes such as Cu2(μ-[3,5-(CF3)2Pz])2(HC≡CH)2 display similar Cu-alkyne bonding features. The mononuclear [H2B(3,5-(CF3)2Pz)2]Cu(NCMe) complex catalyzes [3 + 2] cycloadditions between tolyl azide and a variety of alkynes including acetylene. It is comparatively less effective than the related trinuclear copper catalyst {μ-[3,5-(CF3)2Pz]Cu}3 involving bridging pyrazolates.
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Affiliation(s)
- Anurag Noonikara-Poyil
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, TX 76019, USA;
| | - Alvaro Muñoz-Castro
- Grupo de Química Inorgánica y Materiales Moleculares, Facultad de Ingenieria, Universidad Autonoma de Chile, El Llano Subercaseaux 2801, Santiago 8910060, Chile
- Correspondence: (A.M.-C.); (H.V.R.D.)
| | - H. V. Rasika Dias
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, TX 76019, USA;
- Correspondence: (A.M.-C.); (H.V.R.D.)
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10
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Patterson MR, Dias HVR. Tetranuclear and trinuclear copper(I) pyrazolates as catalysts in copper mediated azide-alkyne cycloadditions (CuAAC). Dalton Trans 2021; 51:375-383. [PMID: 34897336 DOI: 10.1039/d1dt04026j] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Homoleptic, tetranuclear copper(I) pyrazolates {[3,5-(t-Bu)2Pz]Cu}4, {[3-(CF3)-5-(t-Bu)Pz]Cu}4, and {[4-Br-3,5-(i-Pr)2Pz]Cu}4 are excellent stand-alone catalysts for azide-alkyne cycloaddition reactions (CuAAC). This work demonstrates that a range of pyrazolates, including those with electron donating and electron-withdrawing groups to sterically demanding substituents on the pyrazolyl backbones, can serve as effective ligand supports on tetranuclear copper catalysts. However, in contrast to the tetramers and also highly fluorinated {[3,5-(CF3)2Pz]Cu}3, trinuclear copper(I) complexes such as {[3,5-(i-Pr)2Pz]Cu}3 and {[3-(CF3)-5-(CH3)Pz]Cu}3 supported by relatively electron rich pyrazolates display poor catalytic activity in CuAAC. The behavior and degree of aggregation of several of these copper(I) pyrazolates in solution were examined using vapor pressure osmometry. Copper(I) complexes such as {[3,5-(CF3)2Pz]Cu}3 and {[3-(CF3)-5-(t-Bu)Pz]Cu}4 with electron withdrawing pyrazolates were found to break up in solution to different degrees producing smaller aggregates while those such as {[3,5-(i-Pr)2Pz]Cu}3 and {[3,5-(t-Bu)2Pz]Cu}4 with electron rich pyrazolates remain intact. In addition, kinetic experiments were performed to understand the unusual activity of tetranuclear copper(I) pyrazolate systems.
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Affiliation(s)
- Monika R Patterson
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019, USA.
| | - H V Rasika Dias
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019, USA.
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11
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Heterobimetallic Silver(I) and Copper(I) pyrazolates supported with 1,1′-bis(diphenylphosphino)ferrocene. J Organomet Chem 2021. [DOI: 10.1016/j.jorganchem.2021.121813] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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12
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Gerasimov IS, Zahariev F, Leang SS, Tesliuk A, Gordon MS, Medvedev MG. Introducing LibXC into GAMESS (US). MENDELEEV COMMUNICATIONS 2021. [DOI: 10.1016/j.mencom.2021.04.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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13
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Introducing LibXC into GAMESS (US). MENDELEEV COMMUNICATIONS 2021. [DOI: 10.1016/j.mencom.2021.05.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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14
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Bahsis L, Ablouh E, Hachim ME, Anane H, Taourirte M, Julve M, Stiriba S. Copper(I)‐chitin biopolymer based: An efficient and recyclable catalyst for click azide–alkyne cycloaddition reactions in water. Appl Organomet Chem 2021. [DOI: 10.1002/aoc.6275] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Lahoucine Bahsis
- Laboratoire de Chimie de Coordination et d'Analytique (LCCA), Département de Chimie, Faculté des Sciences d'El Jadida Université Chouaïb Doukkali El Jadida Morocco
- Laboratoire de Chimie Analytique et Moléculaire, LCAM, Faculté Polydisciplinaire de Safi Université Cadi Ayyad Safi Morocco
| | - El‐Houssaine Ablouh
- Materials Science and Nanoengineering Department (MSN) Mohammed VI Polytechnic University (UM6P) Ben Guerir Morocco
| | - Mouhi Eddine Hachim
- Équipe de Modélisation Moléculaire et de Spectroscopie, Faculté des sciences Université de Chouaïb Doukkali El Jadida Morocco
| | - Hafid Anane
- Laboratoire de Chimie Analytique et Moléculaire, LCAM, Faculté Polydisciplinaire de Safi Université Cadi Ayyad Safi Morocco
| | - Moha Taourirte
- Laboratoire de Chimie Bioorganique et Macromoléculaire, Faculté des Sciences et Techniques de Marrakech Université Cadi Ayyad Marrakech Morocco
| | - Miguel Julve
- Instituto de Ciencia Molecular/ICMol Universidad de Valencia Valencia Spain
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15
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Du Y, Zeng Q, Yuan L, He L. Post-polymerization modification based on reactive fluorinated polymers reaction. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2021. [DOI: 10.1080/10601325.2021.1903328] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Yiying Du
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, China
| | - Qiugui Zeng
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, China
| | - Ling Yuan
- Key Laboratory of Advanced Technology of Materials (Ministry of Education of China), School of Materials Science and Engineering, Superconductivity and New Energy R&D Center, Southwest Jiaotong University, Chengdu, China
| | - Lirong He
- Polymer Research Insititute, Sichuan University, Chengdu, China
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Titov AA, Filippov OA, Smol’yakov AF, Averin AA, Shubina ES. New mix-ligand copper(i) and copper(ii) pyrazolate complexes with 2,2′-bipyridine. MENDELEEV COMMUNICATIONS 2021. [DOI: 10.1016/j.mencom.2021.03.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Bahsis L, Ablouh EH, Anane H, Taourirte M, Julve M, Stiriba SE. Cu(ii)-alginate-based superporous hydrogel catalyst for click chemistry azide-alkyne cycloaddition type reactions in water. RSC Adv 2020; 10:32821-32832. [PMID: 35516499 PMCID: PMC9056610 DOI: 10.1039/d0ra06410f] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Accepted: 08/18/2020] [Indexed: 11/21/2022] Open
Abstract
A novel sustainable hydrogel catalyst based on the reaction of sodium alginate naturally extracted from brown algae Laminaria digitata residue with copper(ii) was prepared as spherical beads, namely Cu(ii)-alginate hydrogel (Cu(ii)-AHG). The morphology and structural characteristics of these beads were elucidated by different techniques such as SEM, EDX, BET, FTIR and TGA analysis. Cu(ii)-AHG and its dried form, namely Cu(ii)-alginate (Cu(ii)-AD), are relatively uniform with an average pore ranging from 200 nm to more than 20 μm. These superporous structure beads were employed for the copper catalyzed [3 + 2] cycloaddition reaction of aryl azides and terminal aryl alkynes (CuAAC) via click chemistry at low catalyst loading, using water as a solvent at room temperature and pressure. The catalytic active copper(i) species was generated by the reduction of copper(ii) by terminal alkyne via the oxidative alkyne homocoupling reaction. The prepared catalysts were found to be efficient (85-92%) and regioselective by affording only 1,4-disubstituted-1,2,3-triazoles. They were also recoverable and reused in their dried form for at least four consecutive times without a clear loss of efficiency. A mechanistic study was performed through density functional theory (DFT) calculations in order to explain the regioselectivity outcome of Cu(ii)-alginate in CuAAC reactions. The analysis of the local electrophilicity (ω k) at the electrophilic reagent and the local nucleophilicity (N k) at the nucleophilic confirms the polar character of CuAAC. This catalyst has the main advantage of being sustainably ligand-free and recyclable.
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Affiliation(s)
- Lahoucine Bahsis
- Département de Chimie, Faculté des Sciences d'El Jadida, Université Chouaïb Doukkali B.P.: 20 24000 El Jadida Morocco
- Laboratoire de Chimie Analytique et Moléculaire, LCAM, Faculté Polydisciplinaire de Safi, Université Cadi Ayyad 4162 Safi Morocco
| | - El-Houssaine Ablouh
- Laboratoire de Chimie Bioorganique et Macromoléculaire, Faculté des Sciences et Techniques de Marrakech, Université Cadi Ayyad 40000 Marrakech Morocco
- Centre d'Analyse et de Caractérisation, Université Cadi Ayyad 40000 Marrakech Morocco
| | - Hafid Anane
- Laboratoire de Chimie Analytique et Moléculaire, LCAM, Faculté Polydisciplinaire de Safi, Université Cadi Ayyad 4162 Safi Morocco
| | - Moha Taourirte
- Laboratoire de Chimie Bioorganique et Macromoléculaire, Faculté des Sciences et Techniques de Marrakech, Université Cadi Ayyad 40000 Marrakech Morocco
| | - Miguel Julve
- Instituto de Ciencia Molecular/ICMol, Universidad de Valencia C/Catedrático José Beltrán 46980 Paterna Valencia Spain
| | - Salah-Eddine Stiriba
- Laboratoire de Chimie Analytique et Moléculaire, LCAM, Faculté Polydisciplinaire de Safi, Université Cadi Ayyad 4162 Safi Morocco
- Instituto de Ciencia Molecular/ICMol, Universidad de Valencia C/Catedrático José Beltrán 46980 Paterna Valencia Spain
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