1
|
Transition Metal-(μ-Cl)-Aluminum Bonding in α-Olefin and Diene Chemistry. Molecules 2022; 27:molecules27217164. [PMID: 36363991 PMCID: PMC9654437 DOI: 10.3390/molecules27217164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 10/19/2022] [Accepted: 10/20/2022] [Indexed: 11/06/2022] Open
Abstract
Olefin and diene transformations, catalyzed by organoaluminum-activated metal complexes, are widely used in synthetic organic chemistry and form the basis of major petrochemical processes. However, the role of M−(μ-Cl)−Al bonding, being proven for certain >C=C< functionalization reactions, remains unclear and debated for essentially more important industrial processes such as oligomerization and polymerization of α-olefins and conjugated dienes. Numerous publications indirectly point at the significance of M−(μ-Cl)−Al bonding in Ziegler−Natta and related transformations, but only a few studies contain experimental or at least theoretical evidence of the involvement of M−(μ-Cl)−Al species into catalytic cycles. In the present review, we have compiled data on the formation of M−(μ-Cl)−Al complexes (M = Ti, Zr, V, Cr, Ni), their molecular structure, and reactivity towards olefins and dienes. The possible role of similar complexes in the functionalization, oligomerization and polymerization of α-olefins and dienes is discussed in the present review through the prism of the further development of Ziegler−Natta processes and beyond.
Collapse
|
2
|
Tian J, Feng W, Liu S, Li Z. Titanium Complexes Bearing
NNO‐Tridentate
Ligands: Highly Active Olefin Polymerization Catalysts with Great Control on Molecular Weight and Distribution. CHINESE J CHEM 2022. [DOI: 10.1002/cjoc.202200449] [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)
- Jiliang Tian
- Key Laboratory of Biobased Polymer Materials, College of Polymer Science and Engineering Qingdao University of Science and Technology Qingdao 266042 China
| | - Wenzheng Feng
- Key Laboratory of Biobased Polymer Materials, College of Polymer Science and Engineering Qingdao University of Science and Technology Qingdao 266042 China
| | - Shaofeng Liu
- Key Laboratory of Biobased Polymer Materials, College of Polymer Science and Engineering Qingdao University of Science and Technology Qingdao 266042 China
| | - Zhibo Li
- Key Laboratory of Biobased Polymer Materials, College of Polymer Science and Engineering Qingdao University of Science and Technology Qingdao 266042 China
- College of Chemical Engineering Qingdao University of Science and Technology Qingdao 266042 China
| |
Collapse
|
3
|
Nifant'ev IE, Vinogradov AA, Vinogradov AA, Sadrtdinova GI, Komarov PD, Minyaev ME, Ilyin SO, Kiselev AV, Samurganova TI, Ivchenko PV. Synthesis, molecular structure and catalytic performance of heterocycle-fused cyclopentadienyl-amido CGC of Ti (IV) in ethylene (co)polymerization: The formation and precision rheometry of long-chain branched polyethylenes. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111397] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
|
4
|
Syntheses of Silylene-Bridged Thiophene-Fused Cyclopentadienyl ansa-Metallocene Complexes for Preparing High-Performance Supported Catalyst. Catalysts 2022. [DOI: 10.3390/catal12030283] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
We synthesized a series of Me2Si-bridged ansa-zirconocene complexes coordinated by thiophene-fused cyclopentadienyl and fluorenyl ligands (Me2Si(2-R1-3-R2-4,5-Me2C7S)(2,7-R32C13H6))ZrMe2 (R1 = Me or H, R2 = H or Me, R3 = H, tBu, or Cl) for the subsequent preparation of supported catalysts. We determined that the fluorenyl ligand adopts an η3-binding mode in 9 (R1 = Me, R2 = H, R3 = H) by X-ray crystallography. Further, we synthesized a derivative 15 by substituting the fluorenyl ligand in 9 with a 2-methyl-4-(4-tert-butylphenyl)indenyl ligand, derivatives 20 and 23 by substituting the Me2Si bridge in 12 (R1 = Me, R2 = H, R3 = tBu) and 15 with a tBuO(CH2)6(Me)Si bridge, and the dinuclear congener 26 by connecting two complexes with a –(Me)Si(CH2)6Si(Me)– spacer. The silica-supported catalysts prepared using 12, 20, and 26 demonstrated up to two times higher productivity in ethylene/1-hexene copolymerization than that prepared with conventional (THI)ZrCl2 (21–26 vs. 12 kg-PE/g-(supported catalyst)), producing polymers with comparable molecular weight (Mw, 330–370 vs. 300 kDa), at a higher 1-hexene content (1.3 vs. 1.0 mol%) but a lower bulk density of polymer particles (0.35 vs. 0.42 g/mL).
Collapse
|
5
|
Valdés H, Germán-Acacio JM, van Koten G, Morales-Morales D. Bimetallic complexes that merge metallocene and pincer-metal building blocks: synthesis, stereochemistry and catalytic reactivity. Dalton Trans 2022; 51:1724-1744. [PMID: 34985477 DOI: 10.1039/d1dt03870b] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
This perspective is to illustrate the synthesis and applications of bimetallic complexes by merging a metallocene and a (cyclopentadienyl/aryl) pincer metal complex. Four possible ways to merge metallocene and pincer-metal motifs are reported and representative examples are discussed in more detail. These bimetallic complexes have been employed in some important catalytic reactions such as cross-coupling, transfer hydrogenation or synthesis of ammonia. The metallocene fragment may tune the electronic properties of the pincer ligand, due to its redox reversible properties. Also, the presence of two metals in a single complex allows their electronic communication, which proved beneficial for, e.g., the catalytic activity of some species. The presence of the metallocene fragment provides an excellent opportunity to develop chiral catalysts, because the metallocene merger generally renders the two faces of the pincer-metal catalytic site diastereotopic. Besides, an extra chiral functionality may be added to the bimetallic species by using pincer motifs that are planar chiral, e.g. by using the different substituents of pincer ligand "arms" or non-symmetrical arene groupings. Post-functionalization of pre-formed pincer-metal complexes, via η6-coordination with an areneophile such as [CpRu]+ and [Cp*Ru]+ presents a striking strategy to obtain diastereomeric metallocene-pincer type derivatives, that actually involve half-sandwich metallocenes. This approach offers the possibility to create diastereomerically pure derivatives by using the chiral TRISPHAT anion. The authors hope that this report of the synthetic, physico-chemical properties and remarkable catalytic activities of metallocene-based pincer-metal complexes will inspire other researchers to continue exploring this realm.
Collapse
Affiliation(s)
- Hugo Valdés
- Institut de Química Computacional i Catàlisi (IQCC) and Departament de Química, Universitat de Girona, Campus de Montilivi, Girona E-17003, Catalonia, Spain
| | - Juan M Germán-Acacio
- Red de Apoyo a la Investigación, Coordinación de la Investigación Científica-UNAM, Instituto Nacional de Ciencias Médicas y Nutrición SZ, C. P.14000, Ciudad de México, Mexico
| | - Gerard van Koten
- Organic Chemistry and Catalysis, Debye Institute for Nanomaterials Science, Faculty of Science, Utrecht University, 3584CG Utrecht, The Netherlands
| | - David Morales-Morales
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria, Ciudad de México. C. P. 04510, Mexico.
| |
Collapse
|
6
|
Chamkin AA. Teaching cyclopentadienyl how to leave: a case study of [CpIr(COD)Br] + complex. NEW J CHEM 2022. [DOI: 10.1039/d2nj00098a] [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
This work was motivated by a recent report that describes the substitution of the cyclopentadienyl ring in [CpIr(COD)Br]+ with P(OMe)3 in mild conditions. We have shown that the first step...
Collapse
|
7
|
Hallooman D, Rhyman L, Dalkılıç E, Daştan A, Elzagheid MI, Domingo LR, Ramasami P. Theoretical Studies on the Mechanism of the Formation of Cyclopentadienes and Dihydropyridazines. ChemistrySelect 2021. [DOI: 10.1002/slct.202102928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Dhanashree Hallooman
- Computational Chemistry Group Department of Chemistry Faculty of Science University of Mauritius Moka, Réduit 80837 Mauritius
| | - Lydia Rhyman
- Computational Chemistry Group Department of Chemistry Faculty of Science University of Mauritius Moka, Réduit 80837 Mauritius
- Centre for Natural Product Research Department of Chemical Sciences University of Johannesburg, Doornfontein Johannesburg 2028 South Africa
| | - Erdin Dalkılıç
- Atatürk University Science Faculty, Department of Chemistry Erzurum 25240 Turkey
| | - Arif Daştan
- Atatürk University Science Faculty, Department of Chemistry Erzurum 25240 Turkey
| | - Mohamed I. Elzagheid
- Department of Chemical and Process Engineering Jubail Industrial College Jubail Industrial City 31961 Saudi Arabia
| | - Luis R. Domingo
- Department of Organic Chemistry University of Valencia Dr. Moliner 50 E-46100 Burjassot Valencia Spain
| | - Ponnadurai Ramasami
- Computational Chemistry Group Department of Chemistry Faculty of Science University of Mauritius Moka, Réduit 80837 Mauritius
- Centre for Natural Product Research Department of Chemical Sciences University of Johannesburg, Doornfontein Johannesburg 2028 South Africa
| |
Collapse
|
8
|
Linares-Anaya O, Avila-Sorrosa A, Díaz-Cedillo F, Gil-Ruiz LÁ, Correa-Basurto J, Salazar-Mendoza D, Orjuela AL, Alí-Torres J, Ramírez-Apan MT, Morales-Morales D. Synthesis, Characterization, and Preliminary In Vitro Cytotoxic Evaluation of a Series of 2-Substituted Benzo [ d] [1,3] Azoles. Molecules 2021; 26:molecules26092780. [PMID: 34066820 PMCID: PMC8125891 DOI: 10.3390/molecules26092780] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Revised: 04/09/2021] [Accepted: 04/13/2021] [Indexed: 11/16/2022] Open
Abstract
A series of benzo [d] [1,3] azoles 2-substituted with benzyl- and allyl-sulfanyl groups were synthesized, and their cytotoxic activities were in vitro evaluated against a panel of six human cancer cell lines. The results showed that compounds BTA-1 and BMZ-2 have the best inhibitory effects, compound BMZ-2 being comparable in some cases with the reference drug tamoxifen and exhibiting a low cytotoxic effect against healthy cells. In silico molecular coupling studies at the tamoxifen binding site of ERα and GPER receptors revealed affinity and the possible mode of interaction of both compounds BTA-1 and BMZ-2.
Collapse
Affiliation(s)
- Ozvaldo Linares-Anaya
- Instituto Politécnico Nacional, Departamento de Química Orgánica, Carpio y Plan de Ayala S/N, Escuela Nacional de Ciencias Biológicas, Colonia Santo Tomás, Ciudad de México 11340, Mexico; (O.L.-A.); (F.D.-C.); (L.Á.G.-R.)
| | - Alcives Avila-Sorrosa
- Instituto Politécnico Nacional, Departamento de Química Orgánica, Carpio y Plan de Ayala S/N, Escuela Nacional de Ciencias Biológicas, Colonia Santo Tomás, Ciudad de México 11340, Mexico; (O.L.-A.); (F.D.-C.); (L.Á.G.-R.)
- Correspondence: ; Tel.: +52-555-729-6000
| | - Francisco Díaz-Cedillo
- Instituto Politécnico Nacional, Departamento de Química Orgánica, Carpio y Plan de Ayala S/N, Escuela Nacional de Ciencias Biológicas, Colonia Santo Tomás, Ciudad de México 11340, Mexico; (O.L.-A.); (F.D.-C.); (L.Á.G.-R.)
| | - Luis Ángel Gil-Ruiz
- Instituto Politécnico Nacional, Departamento de Química Orgánica, Carpio y Plan de Ayala S/N, Escuela Nacional de Ciencias Biológicas, Colonia Santo Tomás, Ciudad de México 11340, Mexico; (O.L.-A.); (F.D.-C.); (L.Á.G.-R.)
- Laboratorio de Diseño y Desarrollo de Nuevos Fármacos e Innovación Biotecnológica, Instituto Politécnico Nacional, Escuela Superior de Medicina, Ciudad de México 11340, Mexico;
| | - José Correa-Basurto
- Laboratorio de Diseño y Desarrollo de Nuevos Fármacos e Innovación Biotecnológica, Instituto Politécnico Nacional, Escuela Superior de Medicina, Ciudad de México 11340, Mexico;
| | - Domingo Salazar-Mendoza
- Carretera a Acatlima, Huajuapan de León, Universidad Tecnológica de la Mixteca, Oaxaca 69000, Mexico;
| | - Adrian L. Orjuela
- Departamento de Química, Universidad Nacional de Colombia-Sede, Bogotá 111321, Colombia; (A.L.O.); (J.A.-T.)
| | - Jorge Alí-Torres
- Departamento de Química, Universidad Nacional de Colombia-Sede, Bogotá 111321, Colombia; (A.L.O.); (J.A.-T.)
| | - María Teresa Ramírez-Apan
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria, Ciudad de México 04510, Mexico; (M.T.R.-A.); (D.M.-M.)
| | - David Morales-Morales
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria, Ciudad de México 04510, Mexico; (M.T.R.-A.); (D.M.-M.)
| |
Collapse
|
9
|
Qin Y, Li T, Chen X, Li J, Meng X, You Q, Xie G. Asymmetric bis-salicylaldiminato binuclear titanium complexes for ethylene polymerization and copolymerization. NEW J CHEM 2021. [DOI: 10.1039/d1nj01049b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Asymmetric binuclear Ti complexes were synthesized, which exhibited excellent activity for ethylene homopolymerization and copolymerization with 1-hexene or norbornene and high comonomer insertion efficiency under MMAO activation.
Collapse
Affiliation(s)
- Yawen Qin
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Hubei Key Laboratory of Catalysis and Materials Science
- South-Central University for Nationalities
- Wuhan 430074
- China
| | - Tingcheng Li
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Hubei Key Laboratory of Catalysis and Materials Science
- South-Central University for Nationalities
- Wuhan 430074
- China
| | - Xiong Chen
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Hubei Key Laboratory of Catalysis and Materials Science
- South-Central University for Nationalities
- Wuhan 430074
- China
| | - Jian Li
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Hubei Key Laboratory of Catalysis and Materials Science
- South-Central University for Nationalities
- Wuhan 430074
- China
| | - Xiang Meng
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Hubei Key Laboratory of Catalysis and Materials Science
- South-Central University for Nationalities
- Wuhan 430074
- China
| | - Qingliang You
- Key Laboratory of Optoelectronic Chemical Materials and Devices
- Ministry of Education
- School of Chemical and Environmental Engineering
- Jianghan University
- Wuhan 430056
| | - Guangyong Xie
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Hubei Key Laboratory of Catalysis and Materials Science
- South-Central University for Nationalities
- Wuhan 430074
- China
- Hubei Engineering Technology Research Centre of Energy Polymer Materials
| |
Collapse
|
10
|
Nifant'ev IE, Ivchenko PV. Synthesis of Heteroarene‐Fused Cyclopentadienes and Related Compounds Suitable for Metallocene Preparation. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000178] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Ilya E. Nifant'ev
- A.V. Topchiev Institute of Petrochemical Synthesis RAS Leninsky pr. 22 119991 Moscow Russian Federation
- Department of Chemistry M.V. Lomonosov Moscow University Leninskie gory 1–3 119991 Moscow Russian Federation
| | - Pavel V. Ivchenko
- A.V. Topchiev Institute of Petrochemical Synthesis RAS Leninsky pr. 22 119991 Moscow Russian Federation
- Department of Chemistry M.V. Lomonosov Moscow University Leninskie gory 1–3 119991 Moscow Russian Federation
| |
Collapse
|