1
|
Di Matteo M, Gagliardi A, Pradal A, Veiros LF, Gallou F, Poli G. Pd-Catalyzed C(sp 2)-H/C(sp 2)-H Coupling of Limonene. J Org Chem 2024; 89:10451-10461. [PMID: 39025478 DOI: 10.1021/acs.joc.4c00501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/20/2024]
Abstract
Limonene undergoes a regioselective Pd(II)-catalyzed C(sp2)-H/C(sp2)-H coupling with acrylic acid esters and amides, α,β-unsaturated ketones, styrenes, and allyl acetate, affording novel 1,3-dienes. DFT computations gave results in accord with the experimental results and allowed for the formulation of a plausible mechanism. The postfunctionalization of one of the coupled products was achieved via a large-scale Sonogashira reaction conducted under micellar catalysis.
Collapse
Affiliation(s)
- Marco Di Matteo
- Institut Parisien de Chimie Moléculaire (IPCM), Faculté des Sciences et Ingénierie, CNRS, Sorbonne Université, 4 Place Jussieu, 75005 Paris, France
| | - Anna Gagliardi
- Institut Parisien de Chimie Moléculaire (IPCM), Faculté des Sciences et Ingénierie, CNRS, Sorbonne Université, 4 Place Jussieu, 75005 Paris, France
| | - Alexandre Pradal
- Institut Parisien de Chimie Moléculaire (IPCM), Faculté des Sciences et Ingénierie, CNRS, Sorbonne Université, 4 Place Jussieu, 75005 Paris, France
| | - Luis F Veiros
- Centro de Química Estrutural, Institute of Molecular Sciences, Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049 001 Lisboa, Portugal
| | | | - Giovanni Poli
- Institut Parisien de Chimie Moléculaire (IPCM), Faculté des Sciences et Ingénierie, CNRS, Sorbonne Université, 4 Place Jussieu, 75005 Paris, France
| |
Collapse
|
2
|
Li D, Shao X, Li X, Qian Y, Wang G, Wei Y, Guo S. Versatile morphology transition of nano-assemblies via ultrasonics/microwave assisted aqueous polymerization-induced self-assembly based on host-guest interaction. ULTRASONICS SONOCHEMISTRY 2024; 107:106901. [PMID: 38735786 PMCID: PMC11179237 DOI: 10.1016/j.ultsonch.2024.106901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Revised: 04/28/2024] [Accepted: 05/07/2024] [Indexed: 05/14/2024]
Abstract
Nano-assemblies have wide applications in biomedicine, functional coatings, Pickering emulsifiers, hydrogels, and so forth. The preparation of assemblies mainly utilizes the polymerization-induced self-assembly (PISA) method, which can produce high-concentration nanoscale assemblies in one step. However, the initiation processes of most reported PISA are limited to thermal initiation. Here, we reported two green and efficient methods for synthesizing nano-assemblies with various morphologies using ultrasound (20 kHz)/ microwave (500 W) assisted aqueous-phase RAFT-PISA in 3 h and 1 h. Cyclodextrin (CD) and styrene (St) nucleating monomer were complexed in a 1:1 ratio. Then, using Poly (ethylene glycol) methyl ether as the macromolecular reversible addition-fragmentation chain transfer (RAFT) agent (PEG-CTA) to control the CD/St complexes, the conversion rate of St monomer was respectively 27 %-60 %, 20 %-30 % within 3 h and 1 h under ultrasonics/microwave assisted PISA. Results showed that the morphologies of the assemblies are not only related to the length of PS block, but also to the assistance types and the remaining monomer concentration. The results showed that only PEG45-b-PS90 and PEG45-b-PS241 assemblies prepared by ultrasonics assisted PISA form evolved lamellaes and vesicles (100 nm), which break through the limitation of kinetic freezing. But the ultrasonic reaction on morphology of assemblies is not all favourable. For one thing, it can promote the movement of particles; for another, it makes reverse morphology transformation and sphere is preferred morphology. Therefore, the main reason of morphology evolution is the remaining monomer concentration of PEG45-b-PS90 and PEG45-b-PS241 assemblies reaches to 55 %-65 %, which promoting the segment movement. The results showed that the morphology of the assemblies prepared by microwave assisted PISA changed from spherical micelles to short rods, and finally to vesicles (120-140 nm) as the length of hydrophobic PS block increases. The kinetic freezing problem was solved in microwave-assisted PISA due to the action of microwaves and more remaining monomer concentration. Both them can boost particles movement.
Collapse
Affiliation(s)
- Dan Li
- International Scientific and Technological Cooperation Base of Industrial Solid Waste Cyclic Utilization and Advanced Materials, Key Laboratory of Polymer Materials and Manufacturing Technology, School of Materials Science and Engineering, North Minzu University, Yinchuan 750021, PR China
| | - Xin Shao
- International Scientific and Technological Cooperation Base of Industrial Solid Waste Cyclic Utilization and Advanced Materials, Key Laboratory of Polymer Materials and Manufacturing Technology, School of Materials Science and Engineering, North Minzu University, Yinchuan 750021, PR China
| | - Xin Li
- International Scientific and Technological Cooperation Base of Industrial Solid Waste Cyclic Utilization and Advanced Materials, Key Laboratory of Polymer Materials and Manufacturing Technology, School of Materials Science and Engineering, North Minzu University, Yinchuan 750021, PR China
| | - Yongqiang Qian
- International Scientific and Technological Cooperation Base of Industrial Solid Waste Cyclic Utilization and Advanced Materials, Key Laboratory of Polymer Materials and Manufacturing Technology, School of Materials Science and Engineering, North Minzu University, Yinchuan 750021, PR China
| | - Guxia Wang
- School of Chemistry and Chemical Engineering, North Minzu University, Yinchuan 750021, PR China.
| | - Yen Wei
- International Scientific and Technological Cooperation Base of Industrial Solid Waste Cyclic Utilization and Advanced Materials, Key Laboratory of Polymer Materials and Manufacturing Technology, School of Materials Science and Engineering, North Minzu University, Yinchuan 750021, PR China; Key Laboratory of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, PR China
| | - Shengwei Guo
- International Scientific and Technological Cooperation Base of Industrial Solid Waste Cyclic Utilization and Advanced Materials, Key Laboratory of Polymer Materials and Manufacturing Technology, School of Materials Science and Engineering, North Minzu University, Yinchuan 750021, PR China.
| |
Collapse
|
3
|
Shao X, Li D, Guo S, Yan J, Qian Y, Wang G. Preparation of diblock copolymer nano-assemblies by ultrasonics assisted ethanol-phase polymerization-induced self-assembly. ULTRASONICS SONOCHEMISTRY 2024; 105:106855. [PMID: 38531733 PMCID: PMC11059131 DOI: 10.1016/j.ultsonch.2024.106855] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Revised: 03/20/2024] [Accepted: 03/23/2024] [Indexed: 03/28/2024]
Abstract
Assemblies are widely used in biomedicine, batteries, functional coatings, Pickering emulsifiers, hydrogels, and luminescent materials. Polymerization-induced self-assembly (PISA) is a method for efficiently preparing particles, mainly initiated thermally. However, thermally initiated PISA usually requires a significant amount of time and energy. Here, we demonstrate the preparation of nano-assemblies with controllable morphologies and size using ultrasound (20 kHz) assisted ethanol-phase RAFT-PISA in three hours. Using poly (N, N-dimethylaminoethyl methacrylate) as the macromolecular reversible addition-fragmentation chain transfer agent (PDMA-CTA) to control the nucleating monomer benzyl methacrylate (BzMA), we obtained nano-assemblies with different morphologies. With the length of hydrophobic PBzMA block growth, the morphologies of the assemblies at 15 wt% solid content changed from spheres to vesicles, and finally to lamellae; the morphologies of the assemblies at 30 wt% changed from spheres micelles to short worms, then vesicles, and finally to large compound vesicles. With the same targeted degree of polymerization, nano-assemblies having a 30 wt% solid content display a more evolved morphology. The input of ultrasonic energy makes the system have higher surface free energy, results the mass fraction interval of solventphilic blocks (fhydrophilic) corresponding to the formation of spherical micelles is expanded from fhydrophilic > 45 % to fhydrophilic > 31 % under ultrasound and the fhydrophilic required to form worms, vesicles, and large composite vesicles decreases in turn. It is worth noting that the fhydrophilic interval of worms prepared by ultrasonics assisted PISA gets larger. Overall, the highly green, externally-regulatable and fast method of ultrasonics assisted PISA can be extended to vastly different diblock copolymers, for a wide range of applications.
Collapse
Affiliation(s)
- Xin Shao
- International Scientific and Technological Cooperation Base of Industrial Solid Waste Cyclic Utilization and Advanced Materials, Key Laboratory of Polymer Materials and Manufacturing Technology, School of Materials Science and Engineering, North Minzu University, Yinchuan 750021, PR China
| | - Dan Li
- International Scientific and Technological Cooperation Base of Industrial Solid Waste Cyclic Utilization and Advanced Materials, Key Laboratory of Polymer Materials and Manufacturing Technology, School of Materials Science and Engineering, North Minzu University, Yinchuan 750021, PR China.
| | - Shengwei Guo
- International Scientific and Technological Cooperation Base of Industrial Solid Waste Cyclic Utilization and Advanced Materials, Key Laboratory of Polymer Materials and Manufacturing Technology, School of Materials Science and Engineering, North Minzu University, Yinchuan 750021, PR China
| | - Jun Yan
- International Scientific and Technological Cooperation Base of Industrial Solid Waste Cyclic Utilization and Advanced Materials, Key Laboratory of Polymer Materials and Manufacturing Technology, School of Materials Science and Engineering, North Minzu University, Yinchuan 750021, PR China
| | - Yongqiang Qian
- International Scientific and Technological Cooperation Base of Industrial Solid Waste Cyclic Utilization and Advanced Materials, Key Laboratory of Polymer Materials and Manufacturing Technology, School of Materials Science and Engineering, North Minzu University, Yinchuan 750021, PR China
| | - Guxia Wang
- School of Chemistry and Chemical Engineering, North Minzu University, Yinchuan 750021, PR China.
| |
Collapse
|
4
|
Cheng YT, Xia Q, Liu H, Solomon MB, Brisson ERL, Blackman LD, Ling CD, Müllner M. Tunable Polymer Nanoreactors from RAFT Polymerization-Induced Self-Assembly: Fabrication of Nanostructured Carbon-Coated Anatase as Battery Anode Materials with Variable Morphology and Porosity. ACS APPLIED MATERIALS & INTERFACES 2023; 15:12261-12272. [PMID: 36821625 DOI: 10.1021/acsami.2c18928] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
We demonstrate a modular synthesis approach to yield mesoporous carbon-coated anatase (denoted as TiO2/C) nanostructures. Combining polymerization-induced self-assembly (PISA) and reversible addition-fragmentation chain-transfer (RAFT) dispersion polymerization enabled the fabrication of uniform core-shell polymeric nanoreactors with tunable morphologies. The nanoreactors comprised of a poly(2-(dimethylamino)ethyl methacrylate) (PDMAEMA) shell and a poly(benzyl methacrylate) (PBzMA) core. We selected worm-like and vesicular morphologies to guide the nanostructuring of a TiO2 precursor, namely, titanium(IV) bis(ammonium lactato)dihydroxide (TALH). Subsequent carbonization yielded nanocrystalline anatase and simultaneously introduced a porous carbon framework, which also suppressed the crystal growth (∼5 nm crystallites). The as-prepared TiO2/C materials comprised of a porous structure, with large specific surface areas (>85 m2/g) and various carbon contents (20-30 wt %). As anode components in lithium-ion batteries, our TiO2/C nanomaterials improved the cycling stability, facilitated high overall capacities, and minimized the capacity loss compared to both their sans carbon and commercial anatase analogues.
Collapse
Affiliation(s)
- Yen Theng Cheng
- Key Centre for Polymers and Colloids, School of Chemistry, The University of Sydney, Sydney, NSW 2006, Australia
- The University of Sydney Nano Institute (Sydney Nano), Sydney, NSW 2006, Australia
| | - Qingbo Xia
- School of Chemistry, The University of Sydney, Sydney, NSW 2006, Australia
- The University of Sydney Nano Institute (Sydney Nano), Sydney, NSW 2006, Australia
| | - Hongwei Liu
- Sydney Microscopy & Microanalysis, The University of Sydney node of Microscopy Australia, Sydney, NSW 2006, Australia
| | - Marcello B Solomon
- School of Chemistry, The University of Sydney, Sydney, NSW 2006, Australia
| | - Emma R L Brisson
- Key Centre for Polymers and Colloids, School of Chemistry, The University of Sydney, Sydney, NSW 2006, Australia
| | - Lewis D Blackman
- CSIRO Manufacturing Business Unit, Research Way, Clayton, VIC 3168, Australia
| | - Chris D Ling
- School of Chemistry, The University of Sydney, Sydney, NSW 2006, Australia
- The University of Sydney Nano Institute (Sydney Nano), Sydney, NSW 2006, Australia
| | - Markus Müllner
- Key Centre for Polymers and Colloids, School of Chemistry, The University of Sydney, Sydney, NSW 2006, Australia
- The University of Sydney Nano Institute (Sydney Nano), Sydney, NSW 2006, Australia
| |
Collapse
|
5
|
Wan J, Fan B, Thang SH. RAFT-mediated polymerization-induced self-assembly (RAFT-PISA): current status and future directions. Chem Sci 2022; 13:4192-4224. [PMID: 35509470 PMCID: PMC9006902 DOI: 10.1039/d2sc00762b] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Accepted: 03/17/2022] [Indexed: 12/13/2022] Open
Abstract
Polymerization-induced self-assembly (PISA) combines polymerization and self-assembly in a single step with distinct efficiency that has set it apart from the conventional solution self-assembly processes. PISA holds great promise for large-scale production, not only because of its efficient process for producing nano/micro-particles with high solid content, but also thanks to the facile control over the particle size and morphology. Since its invention, many research groups around the world have developed new and creative approaches to broaden the scope of PISA initiations, morphologies and applications, etc. The growing interest in PISA is certainly reflected in the increasing number of publications over the past few years, and in this review, we aim to summarize these recent advances in the emerging aspects of RAFT-mediated PISA. These include (1) non-thermal initiation processes, such as photo-, enzyme-, redox- and ultrasound-initiation; the achievements of (2) high-order structures, (3) hybrid materials and (4) stimuli-responsive nano-objects by design and adopting new monomers and new processes; (5) the efforts in the realization of upscale production by utilization of high throughput technologies, and finally the (6) applications of current PISA nano-objects in different fields and (7) its future directions.
Collapse
Affiliation(s)
- Jing Wan
- School of Chemistry, Monash University Clayton VIC 3800 Australia
| | - Bo Fan
- School of Chemistry, Monash University Clayton VIC 3800 Australia
| | - San H Thang
- School of Chemistry, Monash University Clayton VIC 3800 Australia
| |
Collapse
|
6
|
Abstract
Over the past few decades, the use of transition metal nanoparticles (NPs) in catalysis has attracted much attention and their use in C–C bond forming reactions constitutes one of their most important applications. A huge variety of metal NPs, which have showed high catalytic activity for C–C bond forming reactions, have been developed up to now. Many kinds of stabilizers, such as inorganic materials, magnetically recoverable materials, porous materials, organic–inorganic composites, carbon materials, polymers, and surfactants have been utilized to develop metal NPs catalysts. This review classified and outlined the categories of metal NPs by the type of support.
Collapse
|
7
|
Rohleder D, Vana P. Mesoporous-silica-coated palladium-nanocubes as recyclable nanocatalyst in C-C-coupling reaction - a green approach. RSC Adv 2020; 10:26504-26507. [PMID: 35519765 PMCID: PMC9055435 DOI: 10.1039/d0ra02281k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Accepted: 07/08/2020] [Indexed: 11/21/2022] Open
Abstract
We report the straightforward design of a recyclable palladium-core-silica-shell nanocatalyst showing an excellent balance between sufficient stability and permeability. The overall process - design, catalysis and purification - is characterized by its sustainability and simplicity accompanied by a great recycling potential and ultra high yields in C-C-coupling reactions.
Collapse
Affiliation(s)
- Darius Rohleder
- Institute of Physical Chemistry, Georg-August-University Goettingen Tammannstr. 6 37077 Goettingen Germany
| | - Philipp Vana
- Institute of Physical Chemistry, Georg-August-University Goettingen Tammannstr. 6 37077 Goettingen Germany .,Woehler Research Institute for Sustainable Chemistry (WISCh), Georg-August-University Goettingen Tammannstr. 2 37077 Goettingen Germany
| |
Collapse
|
8
|
D'Agosto F, Rieger J, Lansalot M. RAFT‐vermittelte polymerisationsinduzierte Selbstorganisation (PISA). Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201911758] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Franck D'Agosto
- Univ Lyon Université Claude Bernard Lyon 1 CPE Lyon CNRS UMR 5265 Chemistry, Catalysis, Polymers and Processes (C2P2) 43 Bd du 11 Novembre 1918 69616 Villeurbanne Frankreich
| | - Jutta Rieger
- Sorbonne Université and CNRS UMR 8232 Institut Parisien de Chimie Moléculaire (IPCM), Polymer Chemistry Team (ECP) 4 Place Jussieu 75005 Paris Frankreich
| | - Muriel Lansalot
- Univ Lyon Université Claude Bernard Lyon 1 CPE Lyon CNRS UMR 5265 Chemistry, Catalysis, Polymers and Processes (C2P2) 43 Bd du 11 Novembre 1918 69616 Villeurbanne Frankreich
| |
Collapse
|
9
|
D'Agosto F, Rieger J, Lansalot M. RAFT‐Mediated Polymerization‐Induced Self‐Assembly. Angew Chem Int Ed Engl 2020; 59:8368-8392. [DOI: 10.1002/anie.201911758] [Citation(s) in RCA: 250] [Impact Index Per Article: 62.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Indexed: 12/31/2022]
Affiliation(s)
- Franck D'Agosto
- Univ Lyon Université Claude Bernard Lyon 1 CPE Lyon CNRS UMR 5265 Chemistry, Catalysis, Polymers and Processes (C2P2) 43 Bd du 11 Novembre 1918 69616 Villeurbanne France
| | - Jutta Rieger
- Sorbonne Université and CNRS UMR 8232 Institut Parisien de Chimie Moléculaire (IPCM) Polymer Chemistry Team (ECP) 4 Place Jussieu 75005 Paris France
| | - Muriel Lansalot
- Univ Lyon Université Claude Bernard Lyon 1 CPE Lyon CNRS UMR 5265 Chemistry, Catalysis, Polymers and Processes (C2P2) 43 Bd du 11 Novembre 1918 69616 Villeurbanne France
| |
Collapse
|
10
|
Pd–Co Nanoparticles Supported on Calcined Mg–Fe Hydrotalcites for the Suzuki–Miyaura Reaction in Water with High Turnover Numbers. Catalysts 2019. [DOI: 10.3390/catal9121061] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
We reveal the Suzuki–Miyaura reaction catalyzed by a Pd–Co nanocatalyst supported by Mg–Fe–CHT (calcined hydrotalcites). A variety of boronic acids and aryl halides were transformed into functionalized biphenyls in excellent yields using water as a solvent. The reaction could proceed under mild conditions with a simple operation and high turnover numbers. The excellent catalytic activities are reasonably attributed to the Co-doping, which forms a Pd–Co alloy on the surface of CHT.
Collapse
|
11
|
Hei YY, Song JL, Zhan XC, Zhang XG, Deng CL. The rhodium-catalyzed selective oxidative Heck reaction of amides with allylic esters. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.05.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
12
|
Ye Z, Zhang B, Shao L, Xing G, Qi C, Tao H. Palladium nanoparticles embedded chitosan/poly(vinyl alcohol) composite nanofibers as an efficient and stable heterogeneous catalyst for Heck reaction. J Appl Polym Sci 2019. [DOI: 10.1002/app.48026] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Zeyu Ye
- Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals ProcessShaoxing University Zhejiang Province 312000 People's Republic of China
| | - Benben Zhang
- Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals ProcessShaoxing University Zhejiang Province 312000 People's Republic of China
| | - Linjun Shao
- Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals ProcessShaoxing University Zhejiang Province 312000 People's Republic of China
| | - Guiying Xing
- Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals ProcessShaoxing University Zhejiang Province 312000 People's Republic of China
| | - Chenze Qi
- Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals ProcessShaoxing University Zhejiang Province 312000 People's Republic of China
| | - Hongyu Tao
- Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals ProcessShaoxing University Zhejiang Province 312000 People's Republic of China
| |
Collapse
|
13
|
Liu Y, Oble J, Poli G. Switchable selectivity in Pd-catalyzed [3 + 2] annulations of γ-oxy-2-cycloalkenones with 3-oxoglutarates: C-C/C-C vs C-C/O-C bond formation. Beilstein J Org Chem 2019; 15:1107-1115. [PMID: 31164947 PMCID: PMC6541379 DOI: 10.3762/bjoc.15.107] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2019] [Accepted: 05/06/2019] [Indexed: 11/23/2022] Open
Abstract
Two complementary [3 + 2] annulation protocols between 3-oxoglutarates and cyclic γ-oxy-2-cycloalkenones, simply differing on the reaction temperature, are disclosed. These domino transformations allow C-C/O-C or C-C/C-C [3 + 2] annulations at will, via an intermolecular Pd-catalyzed C-allylation/intramolecular O- or C-1,4-addition sequence, respectively. In particular, exploiting the reversibility of the O-1,4-addition step, in combination with the irreversible C-1,4-addition/decarboxylation path, the intramolecular conjugate addition step could be diverted from the kinetic (O-alkylation) to the thermodynamic path (C-alkylation) thanks to a simple temperature increase. Crucial for the success of this bis-nucleophile/bis-electrophile [3 + 2] annulation is its well-defined step chronology in combination with the total chemoselectivity of the former step. This [3 + 2] C-C/O-C bond forming annulation protocol could be also extended to 1,3,5-triketones as well as 1,3-bis-sulfonylpropan-2-one bis-nucleophiles.
Collapse
Affiliation(s)
- Yang Liu
- Sorbonne Université, Faculté des Sciences et Ingénierie, CNRS, Institut Parisien de Chimie Moléculaire, IPCM, 4 place Jussieu, 75005 Paris, France
| | - Julie Oble
- Sorbonne Université, Faculté des Sciences et Ingénierie, CNRS, Institut Parisien de Chimie Moléculaire, IPCM, 4 place Jussieu, 75005 Paris, France
| | - Giovanni Poli
- Sorbonne Université, Faculté des Sciences et Ingénierie, CNRS, Institut Parisien de Chimie Moléculaire, IPCM, 4 place Jussieu, 75005 Paris, France
| |
Collapse
|
14
|
Sardarian AR, Kazemnejadi M, Esmaeilpour M. Bis-salophen palladium complex immobilized on Fe3O4@SiO2 nanoparticles as a highly active and durable phosphine-free catalyst for Heck and copper-free Sonogashira coupling reactions. Dalton Trans 2019; 48:3132-3145. [DOI: 10.1039/c9dt00060g] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A new Fe3O4@SiO2 superparamagnetic nanoparticles functionalized by a bis-salophen Schiff base Pd(ii)-complex and used as efficient catalyst for Heck and Sonogashira reactions in aqueous media.
Collapse
Affiliation(s)
- Ali Reza Sardarian
- Department of Chemistry
- College of Sciences
- Shiraz University
- Shiraz 71946 84795
- Iran
| | - Milad Kazemnejadi
- Department of Chemistry
- College of Sciences
- Shiraz University
- Shiraz 71946 84795
- Iran
| | - Mohsen Esmaeilpour
- Department of Chemistry
- College of Sciences
- Shiraz University
- Shiraz 71946 84795
- Iran
| |
Collapse
|
15
|
Mollar-Cuni A, Ventura-Espinosa D, Martín S, Mayoral Á, Borja P, Mata JA. Stabilization of Nanoparticles Produced by Hydrogenation of Palladium-N-Heterocyclic Carbene Complexes on the Surface of Graphene and Implications in Catalysis. ACS OMEGA 2018; 3:15217-15228. [PMID: 31458184 PMCID: PMC6643925 DOI: 10.1021/acsomega.8b02193] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Accepted: 10/25/2018] [Indexed: 06/10/2023]
Abstract
Palladium nanoparticles (NPs) have been obtained by decomposition of well-defined palladium complexes noncovalently anchored onto the surface of reduced graphene oxide. Morphological analysis by microscopy showed the presence of small palladium NPs homogeneously distributed on the support. Characterization by X-ray photoelectron spectroscopy confirmed that palladium NPs contain Pd(2+) and Pd(0) oxidation states and the presence of N-heterocyclic carbene and bromo ligands. The catalytic properties of the NPs with and without the support have been evaluated in the hydrogenation of alkynes. Supported palladium NPs showed increased activity versus the nonsupported ones and could be recycled up to 10 times without the loss of catalytic activity. The composition of the palladium NPs is different for each catalytic cycle indicating a dynamic process and the formation of different catalytic active species. On the contrary, the unsupported palladium NPs showed limited activity caused by decomposition and could not be recycled. The role of the support has been investigated. The results indicate that the support influences the stability of palladium NPs.
Collapse
Affiliation(s)
- Andrés Mollar-Cuni
- Institute
of Advanced Materials (INAM), Universitat
Jaume I, Avda. Sos Baynat s/n, 12006 Castellón, Spain
| | - David Ventura-Espinosa
- Institute
of Advanced Materials (INAM), Universitat
Jaume I, Avda. Sos Baynat s/n, 12006 Castellón, Spain
| | - Santiago Martín
- Departamento
de Química Física, Facultad de Ciencias, Universidad de Zaragoza, C/Pedro Cerbuna 12, 50009 Zaragoza, Spain
- Instituto
de Ciencias de Materiales de Aragón (ICMA), Universidad de Zaragoza-CSIC, 50009 Zaragoza, Spain
| | - Álvaro Mayoral
- Instituto
de Nanociencia de Aragón (INA) and Laboratorio de Microscopias
Avanzadas (LMA), edificio i+d Campus Río Ebro, Universidad de Zaragoza, C/Mariano Esquillor, s/n, 50009 Zaragoza, Spain
| | - Pilar Borja
- Institute
of Advanced Materials (INAM), Universitat
Jaume I, Avda. Sos Baynat s/n, 12006 Castellón, Spain
| | - Jose A. Mata
- Institute
of Advanced Materials (INAM), Universitat
Jaume I, Avda. Sos Baynat s/n, 12006 Castellón, Spain
| |
Collapse
|
16
|
Preparation of metal-polymer nanocomposites by chemical reduction of metal ions: functions of polymer matrices. JOURNAL OF POLYMER RESEARCH 2018. [DOI: 10.1007/s10965-018-1646-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
|
17
|
Moghaddam FM, Saberi V, Kalvani P. Phenyltetrazole as a New Ligand for Immobilization of Palladium Nanoparticles on SBA-15: A New Robust Catalyst with High Loading of Pd for Rapid Oxidation and Reduction. ChemistrySelect 2018. [DOI: 10.1002/slct.201800453] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Firouz M. Moghaddam
- Laboratory of Organic Synthesis and Natural Products; Department of Chemistry; Sharif University of Technology; Azadi Street, PO Box 111559516 Tehran Iran
| | - Vahid Saberi
- Laboratory of Organic Synthesis and Natural Products; Department of Chemistry; Sharif University of Technology; Azadi Street, PO Box 111559516 Tehran Iran
| | - Pedram Kalvani
- Laboratory of Organic Synthesis and Natural Products; Department of Chemistry; Sharif University of Technology; Azadi Street, PO Box 111559516 Tehran Iran
| |
Collapse
|
18
|
Kumar BS, Anbarasan R, Amali AJ, Pitchumani K. Isolable C@Fe3O4 nanospheres supported cubical Pd nanoparticles as reusable catalysts for Stille and Mizoroki-Heck coupling reactions. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.07.025] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|