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Ferrino G, De Rosa M, Della Sala P, Gaeta C, Talotta C, Soriente A, Cao Z, Maity B, Cavallo L, Neri P. The Resorcinarene Hexameric Capsule as a Supramolecular Photoacid to Trigger Olefin Hydroarylation in Confined Space. Chemistry 2024; 30:e202303678. [PMID: 38373184 DOI: 10.1002/chem.202303678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 02/07/2024] [Accepted: 02/19/2024] [Indexed: 02/21/2024]
Abstract
The self-assembled resorcinarene capsule C6 shows remarkable photoacidity upon light irradiation, which is here exploited to catalyze olefin hydroarylation reactions in confined space. An experimental pKa* value range of -3.3--2.8 was estimated for the photo-excited hexameric capsule C6*, and consequently an increase in acidity of 8.8 log units was observed with respect to its ground state (pKa=5.5-6.0). This makes the hexameric capsule the first example of a self-assembled supramolecular photoacid. The photoacid C6* can catalyze hydroarylation reaction of olefins with aromatic substrates inside its cavity, while no reaction occurred between them in the absence of irradiation and/or capsule. DFT calculations corroborated a mechanism in which the photoacidity of C6* plays a crucial role in the protonation step of the aromatic substrate. A further proton transfer to olefin with a concomitant C-C bond formation and a final deprotonation step lead to product releasing.
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Affiliation(s)
- Giuseppina Ferrino
- Laboratory of Supramolecular Chemistry Dipartimento di Chimica e Biologia "A. Zambelli", Università degli Studi di Salerno, Via Giovanni Paolo II 132, I-84084, Fisciano (Salerno), Italy
| | - Margherita De Rosa
- Laboratory of Supramolecular Chemistry Dipartimento di Chimica e Biologia "A. Zambelli", Università degli Studi di Salerno, Via Giovanni Paolo II 132, I-84084, Fisciano (Salerno), Italy
| | - Paolo Della Sala
- Laboratory of Supramolecular Chemistry Dipartimento di Chimica e Biologia "A. Zambelli", Università degli Studi di Salerno, Via Giovanni Paolo II 132, I-84084, Fisciano (Salerno), Italy
| | - Carmine Gaeta
- Laboratory of Supramolecular Chemistry Dipartimento di Chimica e Biologia "A. Zambelli", Università degli Studi di Salerno, Via Giovanni Paolo II 132, I-84084, Fisciano (Salerno), Italy
| | - Carmen Talotta
- Laboratory of Supramolecular Chemistry Dipartimento di Chimica e Biologia "A. Zambelli", Università degli Studi di Salerno, Via Giovanni Paolo II 132, I-84084, Fisciano (Salerno), Italy
| | - Annunziata Soriente
- Laboratory of Supramolecular Chemistry Dipartimento di Chimica e Biologia "A. Zambelli", Università degli Studi di Salerno, Via Giovanni Paolo II 132, I-84084, Fisciano (Salerno), Italy
| | - Zhen Cao
- King Abdullah University of Science and Technology (KAUST), KAUST Catalysis Center, (KCC), Physical Sciences and Engineering Division, Tuwal, 23955-6900, Saudi Arabia
| | - Bholanath Maity
- King Abdullah University of Science and Technology (KAUST), KAUST Catalysis Center, (KCC), Physical Sciences and Engineering Division, Tuwal, 23955-6900, Saudi Arabia
| | - Luigi Cavallo
- King Abdullah University of Science and Technology (KAUST), KAUST Catalysis Center, (KCC), Physical Sciences and Engineering Division, Tuwal, 23955-6900, Saudi Arabia
| | - Placido Neri
- Laboratory of Supramolecular Chemistry Dipartimento di Chimica e Biologia "A. Zambelli", Università degli Studi di Salerno, Via Giovanni Paolo II 132, I-84084, Fisciano (Salerno), Italy
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2
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Patamia V, Saccullo E, Zagni C, Tomarchio R, Quattrocchi G, Floresta G, Rescifina A. γ-Cyclodextrins as Supramolecular Reactors for the Three-component Aza-Darzens Reaction in Water. Chemistry 2024; 30:e202303984. [PMID: 38127103 DOI: 10.1002/chem.202303984] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Revised: 12/20/2023] [Accepted: 12/21/2023] [Indexed: 12/23/2023]
Abstract
In recent decades, many efforts have been devoted to studying reactions catalyzed in nanoconfined spaces. The most impressive aspect of catalysis in nanoconfined spaces is that the reactivity of the molecules can be smartly driven to disobey classical behavior. A green and efficient three-component aza-Darzens (TCAD) reaction using a catalytic amount of γ-cyclodextrins (CDs) in water has been developed to synthesize N-phenylaziridines. CDs effectively performed this reaction in an environmentally friendly setting, achieving good yields. The same reaction was then performed using polymeric γ-CD such as a γ-cyclodextrin polymer crosslinked (GCDPC) with epichlorohydrin, a sponge-like macroporous γ-cyclodextrin-based cryogel (GCDC), and a γ-cyclodextrin-based hydrogel (GCDH). The homogeneous and heterogeneous catalyst recovery was then studied, and it was proved to be easily recycled several times without relevant activity loss. Water, as a unique and eco-friendly reaction medium, has been utilized for the first time, to the best of our knowledge, in this reaction. The inclusion of the reagents in CDs has been studied and rationalized by NMR spectroscopy experiments and molecular modeling calculations. The credit of the presented protocol includes good yields and catalyst reusability and precludes the use of organic solvents.
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Affiliation(s)
- Vincenzo Patamia
- Department of Drug and Health Sciences, University of Catania, Viale Andrea Doria 6, 95125, Catania, Italy
| | - Erika Saccullo
- Department of Drug and Health Sciences, University of Catania, Viale Andrea Doria 6, 95125, Catania, Italy
- Department of Biomedical and Biotechnological Sciences (Biometec), University of Catania, Via Santa Sofia 97, 95123, Catania, Italy
| | - Chiara Zagni
- Department of Drug and Health Sciences, University of Catania, Viale Andrea Doria 6, 95125, Catania, Italy
| | - Rosario Tomarchio
- Department of Drug and Health Sciences, University of Catania, Viale Andrea Doria 6, 95125, Catania, Italy
| | - Giuseppe Quattrocchi
- Department of Drug and Health Sciences, University of Catania, Viale Andrea Doria 6, 95125, Catania, Italy
| | - Giuseppe Floresta
- Department of Drug and Health Sciences, University of Catania, Viale Andrea Doria 6, 95125, Catania, Italy
| | - Antonio Rescifina
- Department of Drug and Health Sciences, University of Catania, Viale Andrea Doria 6, 95125, Catania, Italy
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3
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Li TR, Piccini G, Tiefenbacher K. Supramolecular Capsule-Catalyzed Highly β-Selective Furanosylation Independent of the S N1/S N2 Reaction Pathway. J Am Chem Soc 2023; 145:4294-4303. [PMID: 36751707 DOI: 10.1021/jacs.2c13641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
The resorcin[4]arene capsule was found to catalyze β-selective furanosylation reactions for a variety of different furanosyl donors: α-d- and α-l-arabinosyl-, α-l-fucosyl-, α-d-ribosyl-, α-d-xylosyl-, and even α-d-lyxosyl fluorides. The scope is only limited by the inherently finite volume inside the closed capsular catalyst. The catalyst is readily available on a multi-100 g scale and can be recycled for at least seven rounds without significant loss in activity, yield, and selectivity. The mechanistic investigations indicated that the furanosylation mechanism is shifted toward an SN1 reaction on the mechanistic continuum between the prototypical SN1 and SN2 substitution types, as compared to the pyranosylation reaction inside the same catalyst. This is especially true for the lyxosyl donor, as indicated by the nucleophile reaction order of 0.26, and supported by metadynamics calculations. The mechanistic shift toward SN1 is of high interest as it indicates that this catalyst not only enables β-selective furanosylations and pyranoslyations independently of the substrate configuration but in addition also independently of the operating mechanism. To our knowledge, there is no alternative catalyst available that displays such properties.
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Affiliation(s)
- Tian-Ren Li
- Department of Chemistry, University of Basel, Mattenstrasse 24a, 4058 Basel, Switzerland
- NCCR Molecular Systems Engineering, BPR 1095, Mattenstrasse 24a, 4058 Basel, Switzerland
| | - GiovanniMaria Piccini
- Institute of Technical and Macromolecular Chemistry, RWTH Aachen University, Worringerweg 2, 52074 Aachen, Germany
| | - Konrad Tiefenbacher
- Department of Chemistry, University of Basel, Mattenstrasse 24a, 4058 Basel, Switzerland
- NCCR Molecular Systems Engineering, BPR 1095, Mattenstrasse 24a, 4058 Basel, Switzerland
- Department of Biosystems Science and Engineering, ETH Zurich, Mattenstrasse 26, 4058 Basel, Switzerland
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4
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Wang X, Pavlović RZ, Finnegan TJ, Karmakar P, Moore CE, Badjić JD. Rapid Access to Chiral and Tripodal Cavitands from β-Pinene. Chemistry 2022; 28:e202202416. [PMID: 36168151 PMCID: PMC9797447 DOI: 10.1002/chem.202202416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Indexed: 12/31/2022]
Abstract
We report Pd-catalyzed cyclotrimerization of (+)-α-bromoenone, obtained from monoterpene β-pinene, into an enantiopure cyclotrimer. This C3 symmetric compound has three bicyclo[3.1.1]heptane rings fused to its central benzene with each ring carrying a carbonyl group. The cyclotrimer undergoes diastereoselective threefold alkynylation with the lithium salts of five terminal alkynes (41-63 %, de=4-83 %). The addition enabled a rapid synthesis of a small library of novel chiral cavitands that, in shape, resemble a tripod stand. These molecular tripods include a tris-bicycloannelated benzene head attached to three alkyne legs twisted in one direction to form a nonpolar cavity with polar groups as feet. Tripods with methylpyridinium and methylisoquinolinium legs, respectively, form inclusion complexes with anti-inflammatory and chiral drugs (R)/(S)-ibuprofen and (R)/(S)-naproxen. The mode of binding shows drug molecules docked in the cavity of the host through ion-ion, cation-π, and C-H-π contacts that, in addition of desolvation, give rise to complexes having millimolar to micromolar stability in water. Our findings open the door to creating a myriad of enantiopure tripods with tunable functions that, in the future, might give novel chemosensors, catalysts or sequestering agents.
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Affiliation(s)
- Xiuze Wang
- Department of Chemistry and Biochemistry, The Ohio State University, 100 West 18 Avenue, 43210 Columbus, Ohio (USA)
| | - Radoslav Z. Pavlović
- Department of Chemistry and Biochemistry, The Ohio State University, 100 West 18 Avenue, 43210 Columbus, Ohio (USA)
| | - Tyler J. Finnegan
- Department of Chemistry and Biochemistry, The Ohio State University, 100 West 18 Avenue, 43210 Columbus, Ohio (USA)
| | - Pratik Karmakar
- Department of Chemistry and Biochemistry, The Ohio State University, 100 West 18 Avenue, 43210 Columbus, Ohio (USA),Department of Chemistry, King Mongkut’s University of Technology Thonburi (KMUTT), 126 Pracha Uthit Rd., Bang Mod, Thung Khru, Bangkok 10140 (Thailand)
| | - Curtis E. Moore
- Department of Chemistry and Biochemistry, The Ohio State University, 100 West 18 Avenue, 43210 Columbus, Ohio (USA)
| | - Jovica D. Badjić
- Department of Chemistry and Biochemistry, The Ohio State University, 100 West 18 Avenue, 43210 Columbus, Ohio (USA)
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5
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Guo H, Puttreddy R, Salminen T, Lends A, Jaudzems K, Zeng H, Priimagi A. Halogen-bonded shape memory polymers. Nat Commun 2022; 13:7436. [PMID: 36470884 PMCID: PMC9723116 DOI: 10.1038/s41467-022-34962-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Accepted: 11/11/2022] [Indexed: 12/12/2022] Open
Abstract
Halogen bonding (XB), a non-covalent interaction between an electron-deficient halogen atom and a Lewis base, is widely adopted in organic synthesis and supramolecular crystal engineering. However, the roadmap towards materials applications is hindered by the challenges in harnessing this relatively weak intermolecular interaction to devise human-commanded stimuli-responsive soft materials. Here, we report a liquid crystalline network comprising permanent covalent crosslinks and dynamic halogen bond crosslinks, which possess reversible thermo-responsive shape memory behaviour. Our findings suggest that I···N halogen bond, a paradigmatic motif in crystal engineering studies, enables temporary shape fixation at room temperature and subsequent shape recovery in response to human body temperature. We demonstrate versatile shape programming of the halogen-bonded polymer networks through human-hand operation and propose a micro-robotic injection model for complex 1D to 3D shape morphing in aqueous media at 37 °C. Through systematic structure-property-performance studies, we show the necessity of the I···N crosslinks in driving the shape memory effect. The halogen-bonded shape memory polymers expand the toolbox for the preparation of smart supramolecular constructs with tailored mechanical properties and thermoresponsive behaviour, for the needs of, e.g., future medical devices.
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Affiliation(s)
- Hongshuang Guo
- grid.502801.e0000 0001 2314 6254Smart Photonic Materials, Faculty of Engineering and Natural Sciences, Tampere University, Korkeakoulunkatu 3, FI-33720 Tampere, Finland
| | - Rakesh Puttreddy
- grid.502801.e0000 0001 2314 6254Smart Photonic Materials, Faculty of Engineering and Natural Sciences, Tampere University, Korkeakoulunkatu 3, FI-33720 Tampere, Finland
| | - Turkka Salminen
- grid.502801.e0000 0001 2314 6254Tampere Microscopy Center, Tampere University, Korkeakoulunkatu 3, FI-33720 Tampere, Finland
| | - Alons Lends
- grid.419212.d0000 0004 0395 6526Department of Physical Organic Chemistry, Latvian Institute of Organic Synthesis, Riga, LV-1006 Latvia
| | - Kristaps Jaudzems
- grid.419212.d0000 0004 0395 6526Department of Physical Organic Chemistry, Latvian Institute of Organic Synthesis, Riga, LV-1006 Latvia
| | - Hao Zeng
- grid.502801.e0000 0001 2314 6254Smart Photonic Materials, Faculty of Engineering and Natural Sciences, Tampere University, Korkeakoulunkatu 3, FI-33720 Tampere, Finland
| | - Arri Priimagi
- grid.502801.e0000 0001 2314 6254Smart Photonic Materials, Faculty of Engineering and Natural Sciences, Tampere University, Korkeakoulunkatu 3, FI-33720 Tampere, Finland
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6
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Horin I, Slovak S, Cohen Y. Diffusion NMR Reveals the Structures of the Molecular Aggregates of Resorcin[4]arenes and Pyrogallol[4]arenes in Aromatic and Chlorinated Solvents. J Phys Chem Lett 2022; 13:10666-10670. [PMID: 36354303 DOI: 10.1021/acs.jpclett.2c02936] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
The hexameric assemblies of resorcinarenes and pyrogallolarenes are fascinating structures that can serve as nanoreactors in which new chemistry and catalysis occur. Recently, it was suggested based on SANS or SAXS that C11-resorcin[4]arene (1) forms octameric aggregates of a micellar rather than capsular structure in toluene. Here, using NMR spectroscopy, diffusion NMR, and DOSY performed on solutions of C11-resorcin[4]arene (1), C11-pyrogallol[4]arene (2), and mixtures thereof in protonated and deuterated solvents, we found that, in benzene and toluene, 1 primarily formed hexameric capsules accompanied by a minor product with diffusion characteristics consistent with an octameric assembly. In chloroform, 1 formed hexameric capsules. In toluene, 2D NMR revealed two populations of encapsulated toluene molecules in the same capsule of 1. The addition of tetrahexylammonium bromide to the assemblies of 1 in aromatic solvents drove the equilibrium toward the formation of the hexameric capsules. Interestingly, 2 formed only hexameric capsules in all solvents tested.
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7
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Ziganshina AY, Mansurova EE, Antipin IS. Colloids Based on Calixresorcins for the Adsorption, Conversion, and Delivery of Bioactive Substances. COLLOID JOURNAL 2022. [DOI: 10.1134/s1061933x22700028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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8
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Lorenzetto T, Fabris F, Scarso A. A resorcin[4]arene hexameric capsule as a supramolecular catalyst in elimination and isomerization reactions. Beilstein J Org Chem 2022; 18:337-349. [PMID: 35422886 PMCID: PMC8978922 DOI: 10.3762/bjoc.18.38] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Accepted: 03/16/2022] [Indexed: 12/27/2022] Open
Abstract
The hexameric resorcin[4]arene capsule as a self-assembled organocatalyst promotes a series of reactions like the carbonyl–ene cyclization of (S)-citronellal preferentially to isopulegol, the water elimination from 1,1-diphenylethanol, the isomerization of α-pinene and β-pinene preferentially to limonene and minor amounts of camphene. The role of the supramolecular catalyst consists in promoting the protonation of the substrates leading to the formation of cationic intermediates that are stabilized within the cavity with consequent peculiar features in terms of acceleration and product selectivity. In all cases the catalytic activity displayed by the hexameric capsule is remarkable if compared to many other strong Brønsted or Lewis acids.
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Affiliation(s)
- Tommaso Lorenzetto
- Dipartimento di Scienze Molecolari e Nanosistemi, Università Ca’ Foscari di Venezia, via Torino 155, 30172, Mestre-Venezia, Italy
| | - Fabrizio Fabris
- Dipartimento di Scienze Molecolari e Nanosistemi, Università Ca’ Foscari di Venezia, via Torino 155, 30172, Mestre-Venezia, Italy
| | - Alessandro Scarso
- Dipartimento di Scienze Molecolari e Nanosistemi, Università Ca’ Foscari di Venezia, via Torino 155, 30172, Mestre-Venezia, Italy
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9
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Xu N, Su K, El-Sayed ESM, Ju Z, Yuan D. Chiral proline-substituted porous organic cages in asymmetric organocatalysis. Chem Sci 2022; 13:3582-3588. [PMID: 35432868 PMCID: PMC8943855 DOI: 10.1039/d2sc00395c] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Accepted: 03/03/2022] [Indexed: 11/21/2022] Open
Abstract
The efficient preparation of chiral porous organic cages (POCs) with specific functions is challenging, and their application in asymmetric catalysis has not previously been explored. In this work, we have achieved the construction of chiral POCs based on a supramolecular tetraformyl-resorcin[4]arene scaffold with different chiral proline-modified diamine ligands and utilizing dynamic imine chemistry. The incorporation of V-shaped or linear chiral diamines affords the [4 + 8] square prism and [6 + 12] octahedral POCs respectively. The appended chiral proline moieties in such POCs make them highly active supramolecular nanoreactors for asymmetric aldol reactions, delivering up to 92% ee. The spatial distribution of chiral catalytic sites in these two types of POCs greatly affects their catalytic activities and enantioselectivities. This work not only lays a foundation for the asymmetric catalytic application of chiral POCs, but also contributes to our understanding of the catalytic function of biomimetic supramolecular systems. Two calix[4]resorcinarene-based chiral POCs with different self-assembly forms were constructed. The difference in the spatial distribution of chiral organocatalytic sites leads to the two chiral POCs exhibiting distinct stereoselectivities.![]()
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Affiliation(s)
- Ning Xu
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences Fuzhou 350002 Fujian China
| | - Kongzhao Su
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences Fuzhou 350002 Fujian China .,University of the Chinese Academy of Sciences Beijing 100049 China
| | - El-Sayed M El-Sayed
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences Fuzhou 350002 Fujian China .,University of the Chinese Academy of Sciences Beijing 100049 China.,Chemical Refining Laboratory, Refining Department, Egyptian Petroleum Research Institute Nasr City 11727 Egypt
| | - Zhanfeng Ju
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences Fuzhou 350002 Fujian China
| | - Daqiang Yuan
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences Fuzhou 350002 Fujian China .,University of the Chinese Academy of Sciences Beijing 100049 China.,Fujian Science and Technology Innovation Laboratory for Optoelectronic Information of China Fuzhou 350002 Fujian China
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10
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De Rosa M, Gambaro S, Soriente A, Della Sala P, Iuliano V, Talotta C, Gaeta C, Rescifina A, Neri P. Carbocation catalysis in confined space: activation of trityl chloride inside the hexameric resorcinarene capsule. Chem Sci 2022; 13:8618-8625. [PMID: 35974771 PMCID: PMC9337730 DOI: 10.1039/d2sc02901d] [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: 05/24/2022] [Accepted: 06/06/2022] [Indexed: 11/21/2022] Open
Abstract
The hexameric resorcinarene capsule is able to promote carbocation catalysis inside its cavity.
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Affiliation(s)
- Margherita De Rosa
- Laboratory of Supramolecular Chemistry, Dipartimento di Chimica e Biologia “A. Zambelli”, Università di Salerno, Via Giovanni Paolo II, I-84084, Fisciano (SALERNO), Italy
| | - Stefania Gambaro
- Laboratory of Supramolecular Chemistry, Dipartimento di Chimica e Biologia “A. Zambelli”, Università di Salerno, Via Giovanni Paolo II, I-84084, Fisciano (SALERNO), Italy
| | - Annunziata Soriente
- Laboratory of Supramolecular Chemistry, Dipartimento di Chimica e Biologia “A. Zambelli”, Università di Salerno, Via Giovanni Paolo II, I-84084, Fisciano (SALERNO), Italy
| | - Paolo Della Sala
- Laboratory of Supramolecular Chemistry, Dipartimento di Chimica e Biologia “A. Zambelli”, Università di Salerno, Via Giovanni Paolo II, I-84084, Fisciano (SALERNO), Italy
| | - Veronica Iuliano
- Laboratory of Supramolecular Chemistry, Dipartimento di Chimica e Biologia “A. Zambelli”, Università di Salerno, Via Giovanni Paolo II, I-84084, Fisciano (SALERNO), Italy
| | - Carmen Talotta
- Laboratory of Supramolecular Chemistry, Dipartimento di Chimica e Biologia “A. Zambelli”, Università di Salerno, Via Giovanni Paolo II, I-84084, Fisciano (SALERNO), Italy
| | - Carmine Gaeta
- Laboratory of Supramolecular Chemistry, Dipartimento di Chimica e Biologia “A. Zambelli”, Università di Salerno, Via Giovanni Paolo II, I-84084, Fisciano (SALERNO), Italy
| | - Antonio Rescifina
- Dipartimento di Scienze del Farmaco e della Salute, Università di Catania, viale Andrea Doria, 6, 95125 Catania, Italy
| | - Placido Neri
- Laboratory of Supramolecular Chemistry, Dipartimento di Chimica e Biologia “A. Zambelli”, Università di Salerno, Via Giovanni Paolo II, I-84084, Fisciano (SALERNO), Italy
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11
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La Manna P, Talotta C, Gaeta C, Cohen Y, Slovak S, Rescifina A, Sala PD, De Rosa M, Soriente A, Neri P. Supramolecular catalysis in confined space: making the pyrogallol[4]arene capsule catalytically active in non-competitive solvent. Org Chem Front 2022. [DOI: 10.1039/d2qo00172a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The confined space inside the hexameric pyrogallol[4]arene capsule (CP6) has been exploited for the catalysis of the 1,3-dipolar cycloaddition (1,3-DC) between the proline-based iminium derivative I and nitrone 3, in the presence of the non-competitive benzene solvent.
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Affiliation(s)
- Pellegrino La Manna
- Laboratory of Supramolecular Chemistry, Dipartimento di Chimica e Biologia “A. Zambelli”, Università di Salerno, Via Giovanni Paolo II 132, I-84084 Fisciano (Salerno), Italy
| | - Carmen Talotta
- Laboratory of Supramolecular Chemistry, Dipartimento di Chimica e Biologia “A. Zambelli”, Università di Salerno, Via Giovanni Paolo II 132, I-84084 Fisciano (Salerno), Italy
| | - Carmine Gaeta
- Laboratory of Supramolecular Chemistry, Dipartimento di Chimica e Biologia “A. Zambelli”, Università di Salerno, Via Giovanni Paolo II 132, I-84084 Fisciano (Salerno), Italy
| | - Yoram Cohen
- School of Chemistry, The Sackler Faculty of Exact Sciences, Tel Aviv University, Ramat Aviv, 69978 Tel Aviv, Israel
| | - Sarit Slovak
- School of Chemistry, The Sackler Faculty of Exact Sciences, Tel Aviv University, Ramat Aviv, 69978 Tel Aviv, Israel
| | - Antonio Rescifina
- Dipartimento di Scienze del Farmaco e della Salute Università di Catania, Viale Andrea Doria 6, I-95125 Catania, Italy
| | - Paolo Della Sala
- Laboratory of Supramolecular Chemistry, Dipartimento di Chimica e Biologia “A. Zambelli”, Università di Salerno, Via Giovanni Paolo II 132, I-84084 Fisciano (Salerno), Italy
| | - Margherita De Rosa
- Laboratory of Supramolecular Chemistry, Dipartimento di Chimica e Biologia “A. Zambelli”, Università di Salerno, Via Giovanni Paolo II 132, I-84084 Fisciano (Salerno), Italy
| | - Annunziata Soriente
- Laboratory of Supramolecular Chemistry, Dipartimento di Chimica e Biologia “A. Zambelli”, Università di Salerno, Via Giovanni Paolo II 132, I-84084 Fisciano (Salerno), Italy
| | - Placido Neri
- Laboratory of Supramolecular Chemistry, Dipartimento di Chimica e Biologia “A. Zambelli”, Università di Salerno, Via Giovanni Paolo II 132, I-84084 Fisciano (Salerno), Italy
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12
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Poole DA, Mathew S, Reek JNH. Just Add Water: Modulating the Structure-Derived Acidity of Catalytic Hexameric Resorcinarene Capsules. J Am Chem Soc 2021; 143:16419-16427. [PMID: 34591465 PMCID: PMC8517980 DOI: 10.1021/jacs.1c04924] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
![]()
The hexameric undecyl-resorcin[4]arene
capsule (C11R6) features eight discrete
structural water molecules located at the vertices of its cubic suprastructure.
Combining NMR spectroscopy with classical molecular dynamics (MD),
we identified and characterized two distinct species of this capsule, C11R6-A and C11R6-B, respectively featuring 8 and 15 water
molecules incorporated into their respective hydrogen-bonded networks.
Furthermore, we found that the ratio of the C11R6-A and C11R6-B found in solution can be modulated by controlling the water content
of the sample. The importance of this supramolecular modulation in C11R6 capsules
is highlighted by its ability to perform acid-catalyzed transformations,
which is an emergent property arising from the hydrogen bonding within
the suprastructure. We show that the conversion of C11R6-A to C11R6-B enhances the catalytic rate of a model Diels–Alder
cyclization by 10-fold, demonstrating the cofactor-derived control
of a supramolecular catalytic process that emulates natural enzymatic
systems.
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Affiliation(s)
- David A Poole
- Homogeneous, Supramolecular, and Bioinspired Catalysis Group, van't Hoff Institute for Molecular Science (HIMS), University of Amsterdam (UvA), Science Park 904, 1098 XH Amsterdam, The Netherlands
| | - Simon Mathew
- Homogeneous, Supramolecular, and Bioinspired Catalysis Group, van't Hoff Institute for Molecular Science (HIMS), University of Amsterdam (UvA), Science Park 904, 1098 XH Amsterdam, The Netherlands
| | - Joost N H Reek
- Homogeneous, Supramolecular, and Bioinspired Catalysis Group, van't Hoff Institute for Molecular Science (HIMS), University of Amsterdam (UvA), Science Park 904, 1098 XH Amsterdam, The Netherlands
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13
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Cera G, Cester Bonati F, Bazzoni M, Secchi A, Arduini A. Calix[6]arene-based Brønsted acids for molecular recognition and catalysis. Org Biomol Chem 2021; 19:1546-1554. [PMID: 33503105 DOI: 10.1039/d0ob02393k] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report the synthesis of a versatile trifluoromethylsulfonamide calix[6]arene derivative with Brønsted acid features which can influence both molecular recognition and catalytic application. Indeed, in low polarity media, the trifluoromethyl-containing supramolecular wheel is able to respond to the complexation with charged species as a function of its selective ion-pair recognition. In parallel, the enhanced acidity is the key to promote Michael additions of indoles to nitroalkenes under pseudo-physiological reaction conditions (H2O, 37 °C).
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Affiliation(s)
- Gianpiero Cera
- Università di Parma, Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Parco Area delle Scienze 17/A, 43124 Parma, Italy.
| | - Federica Cester Bonati
- Università di Parma, Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Parco Area delle Scienze 17/A, 43124 Parma, Italy.
| | - Margherita Bazzoni
- Università di Parma, Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Parco Area delle Scienze 17/A, 43124 Parma, Italy.
| | - Andrea Secchi
- Università di Parma, Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Parco Area delle Scienze 17/A, 43124 Parma, Italy.
| | - Arturo Arduini
- Università di Parma, Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Parco Area delle Scienze 17/A, 43124 Parma, Italy.
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14
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Chwastek M, Cmoch P, Szumna A. Dodecameric Anion-Sealed Capsules based on Pyrogallol[5]arenes and Resorcin[5]arenes. Angew Chem Int Ed Engl 2021; 60:4540-4544. [PMID: 33372317 DOI: 10.1002/anie.202013105] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 12/07/2020] [Indexed: 11/09/2022]
Abstract
The paper reports formation of exceptionally large capsular species (diameter of c. a. 30 Å) by interactions of polyphenolic macrocycles with 5-fold symmetry with anions. Pyrogallol[5]arenes and resorcin[5]arenes interact with anions via hydrogen bonds involving phenolic OH groups or aromatic CH groups. Based on NMR titration experiments, diffusion coefficients, and geometric requirements, it is postulated that the capsules have (P5H)12 (X- )60 or (R5H)12 (X- )60 stoichiometry and a unique geometry of one of the Platonic solids-a dodecahedron. The capsules exist in THF and in benzene, but not in chloroform, reflecting competitive effects in the solvation of anions. It is also demonstrated that mechanochemical pre-treatment (dry-milling) of solid samples is indispensable to initialize self-assembly in benzene.
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Affiliation(s)
- Monika Chwastek
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, Warsaw, Poland
| | - Piotr Cmoch
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, Warsaw, Poland
| | - Agnieszka Szumna
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, Warsaw, Poland
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15
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Chwastek M, Cmoch P, Szumna A. Dodecameric Anion‐Sealed Capsules based on Pyrogallol[5]arenes and Resorcin[5]arenes. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202013105] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Monika Chwastek
- Institute of Organic Chemistry Polish Academy of Sciences Kasprzaka 44/52 Warsaw Poland
| | - Piotr Cmoch
- Institute of Organic Chemistry Polish Academy of Sciences Kasprzaka 44/52 Warsaw Poland
| | - Agnieszka Szumna
- Institute of Organic Chemistry Polish Academy of Sciences Kasprzaka 44/52 Warsaw Poland
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16
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Affiliation(s)
- Dominic Danielsiek
- Faculty of Chemistry and Biochemistry Ruhr-University Bochum Universitätsstraße 150 44801 Bochum Germany
| | - Gerald Dyker
- Faculty of Chemistry and Biochemistry Ruhr-University Bochum Universitätsstraße 150 44801 Bochum Germany
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17
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Gaeta C, La Manna P, De Rosa M, Soriente A, Talotta C, Neri P. Supramolecular Catalysis with Self‐Assembled Capsules and Cages: What Happens in Confined Spaces. ChemCatChem 2020. [DOI: 10.1002/cctc.202001570] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Carmine Gaeta
- Dipartimento di Chimica e Biologia “A. Zambelli”, Università di Salerno Via Giovanni Paolo II I 84084 Fisciano, Salerno Italy
| | - Pellegrino La Manna
- Dipartimento di Chimica e Biologia “A. Zambelli”, Università di Salerno Via Giovanni Paolo II I 84084 Fisciano, Salerno Italy
| | - Margherita De Rosa
- Dipartimento di Chimica e Biologia “A. Zambelli”, Università di Salerno Via Giovanni Paolo II I 84084 Fisciano, Salerno Italy
| | - Annunziata Soriente
- Dipartimento di Chimica e Biologia “A. Zambelli”, Università di Salerno Via Giovanni Paolo II I 84084 Fisciano, Salerno Italy
| | - Carmen Talotta
- Dipartimento di Chimica e Biologia “A. Zambelli”, Università di Salerno Via Giovanni Paolo II I 84084 Fisciano, Salerno Italy
| | - Placido Neri
- Dipartimento di Chimica e Biologia “A. Zambelli”, Università di Salerno Via Giovanni Paolo II I 84084 Fisciano, Salerno Italy
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18
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Zhang H, Toy PH. Halogen Bond‐Catalyzed Friedel−Crafts Reactions of Furans Using a 2,2’‐Bipyridine‐Based Catalyst. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202001019] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Huimiao Zhang
- Department of Chemistry The University of Hong Kong Pokfulam Road Hong Kong People's Republic of China
| | - Patrick H. Toy
- Department of Chemistry The University of Hong Kong Pokfulam Road Hong Kong People's Republic of China
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19
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Zhang W, Cheng G, Haller GL, Liu Y, Lercher JA. Rate Enhancement of Acid-Catalyzed Alcohol Dehydration by Supramolecular Organic Capsules. ACS Catal 2020. [DOI: 10.1021/acscatal.0c03625] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Wei Zhang
- Department of Chemistry and Catalysis Research Center, Technical University of Munich, Lichtenbergstraße 4, 85748 Garching, Germany
| | - Guanhua Cheng
- Department of Chemistry and Catalysis Research Center, Technical University of Munich, Lichtenbergstraße 4, 85748 Garching, Germany
| | - Gary L. Haller
- Department of Chemistry and Catalysis Research Center, Technical University of Munich, Lichtenbergstraße 4, 85748 Garching, Germany
| | - Yue Liu
- Department of Chemistry and Catalysis Research Center, Technical University of Munich, Lichtenbergstraße 4, 85748 Garching, Germany
| | - Johannes A. Lercher
- Department of Chemistry and Catalysis Research Center, Technical University of Munich, Lichtenbergstraße 4, 85748 Garching, Germany
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, P.O. Box 999, Richland, Washington 99352, United States
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20
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Chwastek M, Szumna A. Higher Analogues of Resorcinarenes and Pyrogallolarenes: Bricks for Supramolecular Chemistry. Org Lett 2020; 22:6838-6841. [PMID: 32820930 PMCID: PMC7498192 DOI: 10.1021/acs.orglett.0c02357] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Indexed: 12/05/2022]
Abstract
Easy scalable and eco-friendly syntheses of resorcin[5]arene, pyrogallol[5]arene, (2-nitro)resorcin[5]arene, (2-carboxyl)resorcin[5]arene, and resorcin[7]arene are presented and a wide range of upper-rim modifications is demonstrated. The macrocycles open the door toward expanding the rich covalent and supramolecular chemistry of [4]arenes with analogues having unique 5-fold and 7-fold symmetry.
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Affiliation(s)
- Monika Chwastek
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Agnieszka Szumna
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
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21
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Gambaro S, Talotta C, Della Sala P, Soriente A, De Rosa M, Gaeta C, Neri P. Kinetic and Thermodynamic Modulation of Dynamic Imine Libraries Driven by the Hexameric Resorcinarene Capsule. J Am Chem Soc 2020; 142:14914-14923. [PMID: 32786766 PMCID: PMC8010792 DOI: 10.1021/jacs.0c04705] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
![]()
The
composition of dynamic covalent imine libraries (DCL) adapts
to the presence of the hexameric resorcinarene capsule. In the presence
of the self-assembled capsule, a kinetic and thermodynamic modulation
of the imine constituents of the DCLs was observed, which was induced
by an unusual predatory action of the capsule on specific imine constituents.
More complex 2 × 2 DCLs also adapt to the presence of the hexameric
capsule, showing a thermodynamic and kinetic modulation of the constituents
induced by the predatory action of the capsule. By cross-referencing
experimental data, a good selectivity (up to 66%) for one constituent
can be induced in a 2 × 2 DCL.
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Affiliation(s)
- Stefania Gambaro
- Laboratory of Supramolecular Chemistry, Dipartimento di Chimica e Biologia "A. Zambelli", Università di Salerno, Via Giovanni Paolo II, I-84084 Fisciano, Salerno, Italy
| | - Carmen Talotta
- Laboratory of Supramolecular Chemistry, Dipartimento di Chimica e Biologia "A. Zambelli", Università di Salerno, Via Giovanni Paolo II, I-84084 Fisciano, Salerno, Italy
| | - Paolo Della Sala
- Laboratory of Supramolecular Chemistry, Dipartimento di Chimica e Biologia "A. Zambelli", Università di Salerno, Via Giovanni Paolo II, I-84084 Fisciano, Salerno, Italy
| | - Annunziata Soriente
- Laboratory of Supramolecular Chemistry, Dipartimento di Chimica e Biologia "A. Zambelli", Università di Salerno, Via Giovanni Paolo II, I-84084 Fisciano, Salerno, Italy
| | - Margherita De Rosa
- Laboratory of Supramolecular Chemistry, Dipartimento di Chimica e Biologia "A. Zambelli", Università di Salerno, Via Giovanni Paolo II, I-84084 Fisciano, Salerno, Italy
| | - Carmine Gaeta
- Laboratory of Supramolecular Chemistry, Dipartimento di Chimica e Biologia "A. Zambelli", Università di Salerno, Via Giovanni Paolo II, I-84084 Fisciano, Salerno, Italy
| | - Placido Neri
- Laboratory of Supramolecular Chemistry, Dipartimento di Chimica e Biologia "A. Zambelli", Università di Salerno, Via Giovanni Paolo II, I-84084 Fisciano, Salerno, Italy
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22
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Abstract
The question as to whether the F atom can engage in a halogen bond (XB) remains unsettled. This issue is addressed via density functional theory calculations which pair a wide range of organic and inorganic F-acids with various sorts of Lewis bases. From an energetic perspective, perfluorinated hydrocarbons with sp, sp2, or sp3 C-hybridization are unable to form an XB with an N-base, but a very weak bond can be formed if electron-withdrawing C≡N substituents are added to the acid. There is little improvement for inorganic acids O2NF, FOF, ClF, BrF, SiF4, or GeF4, but F2 is capable of a stronger XB of up to 5 kcal/mol. These results are consistent with a geometric criterion, which compares the intermolecular equilibrium distance with the sum of atomic van der Waals radii. The intensity of the σ-hole on the F atom has predictive value in that a Vs,max of at least 10-15 kcal/mol is required for XB formation. Adding a positive charge to the Lewis acid enhances the strength of any XB and even more so if the base is anionic. The acid-base interaction induces a contraction of the r(AF) covalent bond in the acid in most cases and a deshielding of the NMR signal of the F nucleus.
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Affiliation(s)
- Steve Scheiner
- Department of Chemistry and Biochemistry, Utah State University, Logan, Utah 84322-0300, United States
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23
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Capacchione C, Picariello D, Della Sala P, Talotta C, Neri P, Bruno I, Pauciulo A, Bartiromo AR, Gliubizzi R, Gaeta C. Dispersing and Retarding Properties of Water-Soluble Tetrasulfonate Resorcin[4]arene and Pyrogallol[4]arene Macrocycles in Cement-Based Mortar. ACS OMEGA 2020; 5:18218-18225. [PMID: 32743197 PMCID: PMC7391848 DOI: 10.1021/acsomega.0c01837] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Accepted: 06/04/2020] [Indexed: 05/27/2023]
Abstract
Water-soluble tetrasulfonate resorcin[4]arene (1a and 1c) and pyrogallol[4]arene (1b) macrocycles were synthesized and investigated for their dispersing properties in cement-based mortars. Mortar tests clearly show that these polyhydroxylated macrocycles (nonpolymeric) work as cement dispersants. Setting time determinations indicate that the macrocycles 1a and 1b show a retarding effect that is reminiscent of the behavior of superplasticizers (SPs) functionalized with polyhydroxylated β-CDs. Finally, the addition of sulfate anions to the cement paste does not affect the dispersing abilities of 1b, probably due to the sulfate anion capture by H-bonding interactions with its OH groups at the upper rim.
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Affiliation(s)
- Clotilde Capacchione
- Dipartimento
di Chimica e Biologia “A. Zambelli”, Università di Salerno, Via Giovanni Paolo II, 84084Fisciano, Salerno, Italia
- BI-QEM
SPECIALTIES S.p.A., Zona
industriale 84021 Buccino, Salerno, Italia
| | - Davide Picariello
- Dipartimento
di Chimica e Biologia “A. Zambelli”, Università di Salerno, Via Giovanni Paolo II, 84084Fisciano, Salerno, Italia
| | - Paolo Della Sala
- Dipartimento
di Chimica e Biologia “A. Zambelli”, Università di Salerno, Via Giovanni Paolo II, 84084Fisciano, Salerno, Italia
| | - Carmen Talotta
- Dipartimento
di Chimica e Biologia “A. Zambelli”, Università di Salerno, Via Giovanni Paolo II, 84084Fisciano, Salerno, Italia
| | - Placido Neri
- Dipartimento
di Chimica e Biologia “A. Zambelli”, Università di Salerno, Via Giovanni Paolo II, 84084Fisciano, Salerno, Italia
| | - Immacolata Bruno
- BI-QEM
SPECIALTIES S.p.A., Zona
industriale 84021 Buccino, Salerno, Italia
| | - Antonio Pauciulo
- BI-QEM
SPECIALTIES S.p.A., Zona
industriale 84021 Buccino, Salerno, Italia
| | | | - Rocco Gliubizzi
- BI-QEM
SPECIALTIES S.p.A., Zona
industriale 84021 Buccino, Salerno, Italia
| | - Carmine Gaeta
- Dipartimento
di Chimica e Biologia “A. Zambelli”, Università di Salerno, Via Giovanni Paolo II, 84084Fisciano, Salerno, Italia
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24
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Affiliation(s)
- Xuelei Liu
- Department of ChemistryThe University of Hong Kong Pokfulam Road Hong Kong People's Republic of China 28592167
| | - Patrick H. Toy
- Department of ChemistryThe University of Hong Kong Pokfulam Road Hong Kong People's Republic of China 28592167
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25
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La Manna P, Talotta C, De Rosa M, Soriente A, Gaeta C, Neri P. An Atom-Economical Method for the Formation of Amidopyrroles Exploiting the Self-Assembled Resorcinarene Capsule. Org Lett 2020; 22:2590-2594. [PMID: 32176513 PMCID: PMC7997627 DOI: 10.1021/acs.orglett.0c00529] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
![]()
Here is reported
the first example of an organocatalyzed coupling
between pyrrole and isocyanates in a nanoconfined space. The hexameric
resorcinarene capsule C is able to catalyze the direct
coupling between isocyanates and pyrroles to give amidopyrroles with
excellent yields and selectivities. The reaction catalyzed by C prevents the use of expensive and poorly atom-economical
reagents. As in natural enzymes, the cavity of C is able
to discriminate between isomeric substrates.
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Affiliation(s)
- Pellegrino La Manna
- Laboratory of Supramolecular Chemistry, Dipartimento di Chimica e Biologia "A. Zambelli", Università di Salerno, Via Giovanni Paolo II 132, I-84084 Fisciano, Salerno, Italy
| | - Carmen Talotta
- Laboratory of Supramolecular Chemistry, Dipartimento di Chimica e Biologia "A. Zambelli", Università di Salerno, Via Giovanni Paolo II 132, I-84084 Fisciano, Salerno, Italy
| | - Margherita De Rosa
- Laboratory of Supramolecular Chemistry, Dipartimento di Chimica e Biologia "A. Zambelli", Università di Salerno, Via Giovanni Paolo II 132, I-84084 Fisciano, Salerno, Italy
| | - Annunziata Soriente
- Laboratory of Supramolecular Chemistry, Dipartimento di Chimica e Biologia "A. Zambelli", Università di Salerno, Via Giovanni Paolo II 132, I-84084 Fisciano, Salerno, Italy
| | - Carmine Gaeta
- Laboratory of Supramolecular Chemistry, Dipartimento di Chimica e Biologia "A. Zambelli", Università di Salerno, Via Giovanni Paolo II 132, I-84084 Fisciano, Salerno, Italy
| | - Placido Neri
- Laboratory of Supramolecular Chemistry, Dipartimento di Chimica e Biologia "A. Zambelli", Università di Salerno, Via Giovanni Paolo II 132, I-84084 Fisciano, Salerno, Italy
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26
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Merget S, Catti L, Piccini G, Tiefenbacher K. Requirements for Terpene Cyclizations inside the Supramolecular Resorcinarene Capsule: Bound Water and Its Protonation Determine the Catalytic Activity. J Am Chem Soc 2020; 142:4400-4410. [DOI: 10.1021/jacs.9b13239] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Severin Merget
- Department of Chemistry, University of Basel, Mattenstrasse 24a, CH-4058 Basel, Switzerland
| | - Lorenzo Catti
- WPI Nano Life Science Institute (WPI-NanoLSI), Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
| | - GiovanniMaria Piccini
- Department of Chemistry and Applied Biosciences, ETH Zurich, c/o USI Campus, Via Giuseppe Buffi 13, CH-6900 Lugano, Switzerland
- Facoltàdi Informatica, Istituto di Scienze Computazionali, Università della Svizzera Italiana, Via Giuseppe Buffi 13, CH-6900 Lugano, Switzerland
| | - Konrad Tiefenbacher
- Department of Chemistry, University of Basel, Mattenstrasse 24a, CH-4058 Basel, Switzerland
- Department of Biosystems Science and Engineering, ETH Zürich, Mattenstrasse 26, CH-4058 Basel, Switzerland
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27
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Torita K, Haraguchi R, Morita Y, Kemmochi S, Komatsu T, Fukuzawa SI. Lewis acid–base synergistic catalysis of cationic halogen-bonding-donors with nucleophilic counter anions. Chem Commun (Camb) 2020; 56:9715-9718. [DOI: 10.1039/d0cc04013d] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
1,3,4-Triaryl-5-iodotriazolium iodides have been developed as halogen-bonding based bifunctional catalysts for simultaneous activation of nucleophiles and electrophiles.
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Affiliation(s)
- Koki Torita
- Department of Applied Chemistry
- Faculty of Science and Engineering
- Chuo University
- 1-13-27 Kasuga
- Bunkyo-ku
| | - Ryosuke Haraguchi
- Department of Applied Chemistry
- Faculty of Engineering
- Chiba Institute of Technology
- 2-17-1 Tsudanuma
- Narashino
| | - Yoshitsugu Morita
- Department of Applied Chemistry
- Faculty of Science and Engineering
- Chuo University
- 1-13-27 Kasuga
- Bunkyo-ku
| | - Satoshi Kemmochi
- Department of Applied Chemistry
- Faculty of Science and Engineering
- Chuo University
- 1-13-27 Kasuga
- Bunkyo-ku
| | - Teruyuki Komatsu
- Department of Applied Chemistry
- Faculty of Science and Engineering
- Chuo University
- 1-13-27 Kasuga
- Bunkyo-ku
| | - Shin-ichi Fukuzawa
- Department of Applied Chemistry
- Faculty of Science and Engineering
- Chuo University
- 1-13-27 Kasuga
- Bunkyo-ku
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28
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Horiuchi S, Matsuo C, Sakuda E, Arikawa Y, Clever GH, Umakoshi K. Anion-mediated encapsulation-induced emission enhancement of an IrIII complex within a resorcin[4]arene hexameric capsule. Dalton Trans 2020; 49:8472-8477. [DOI: 10.1039/d0dt01485k] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The anions of the Ir complex salts control the thermodynamic stability and photoluminescence properties of the host–guest complex.
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Affiliation(s)
- Shinnosuke Horiuchi
- Division of Chemistry and Materials Science
- Graduate School of Engineering
- Nagasaki University
- Nagasaki
- Japan
| | - Chiharu Matsuo
- Division of Chemistry and Materials Science
- Graduate School of Engineering
- Nagasaki University
- Nagasaki
- Japan
| | - Eri Sakuda
- Division of Chemistry and Materials Science
- Graduate School of Engineering
- Nagasaki University
- Nagasaki
- Japan
| | - Yasuhiro Arikawa
- Division of Chemistry and Materials Science
- Graduate School of Engineering
- Nagasaki University
- Nagasaki
- Japan
| | - Guido H. Clever
- Faculty of Chemistry and Chemical Biology
- TU Dortmund University
- Dortmund
- Germany
| | - Keisuke Umakoshi
- Division of Chemistry and Materials Science
- Graduate School of Engineering
- Nagasaki University
- Nagasaki
- Japan
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