1
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Li T, Zhang Y, Du C, Yang D, Song MP, Niu JL. Simultaneous construction of inherent and axial chirality by cobalt-catalyzed enantioselective C-H activation of calix[4]arenes. Nat Commun 2024; 15:7673. [PMID: 39242562 PMCID: PMC11379863 DOI: 10.1038/s41467-024-52133-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2024] [Accepted: 08/27/2024] [Indexed: 09/09/2024] Open
Abstract
The simultaneous construction of multiple stereogenic elements in a single step is highly appealing and desirable in the field of asymmetric synthesis. Furthermore, the catalytic enantioselective synthesis of inherently chiral calix[n]arenes with high enantiopurity has long been a challenging endeavor. Herein, we report an enantioselective cobalt-catalyzed C-H activation/annulation for the efficient construction of inherently chiral calix[4]arenes bearing multiple C-N axially chiral element. By employing the benzamide tethered calix[4]arene as the substrate, the C-H annulation with alkynes can be successfully accomplished, leading to the generation of multiple stereogenic elements. A wide range of calix[4]arenes and alkynes are found to be well compatible, and exhibit good yields, high enantioselectivity and excellent diastereoselectivity. Notably, the gram-scale reaction, catalytic application, synthetic transformations, and chiral recognition further showcase the potential applications of this protocol.
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Affiliation(s)
- Tong Li
- College of Chemistry, Pingyuan Laboratory, Zhengzhou University, Zhengzhou, China
| | - Yanbo Zhang
- College of Chemistry, Pingyuan Laboratory, Zhengzhou University, Zhengzhou, China
| | - Cong Du
- School of Materials Science and Engineering, and Collaborative Innovation Center of Nano Functional Materials and Applications, Henan University, Kaifeng, China
| | - Dandan Yang
- College of Chemistry, Pingyuan Laboratory, Zhengzhou University, Zhengzhou, China.
| | - Mao-Ping Song
- College of Chemistry, Pingyuan Laboratory, Zhengzhou University, Zhengzhou, China
| | - Jun-Long Niu
- College of Chemistry, Pingyuan Laboratory, Zhengzhou University, Zhengzhou, China.
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2
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Iwamoto T, Hasegawa H, Mori D, Yamazaki T, Fujinuki K, Ishii Y. Post-Synthetic Modification of Calix[4]arene Framework by Iridium-Mediated Alkyne Insertion into an Inert C-C Bond: A Novel Strategy for Unsymmetrical Macrocycles. Chemistry 2024; 30:e202401490. [PMID: 39016691 DOI: 10.1002/chem.202401490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2024] [Indexed: 07/18/2024]
Abstract
As a novel synthetic method for unsymmetrical macrocycles, we herein developed a post-synthetic modification of calix[4]arenes by insertion of a terminal alkyne into an inert C(methylene)-C(aryl) bond of the macrocyclic framework. In this transformation, C-iridated calix[4]arenes, readily synthesized through C-H bond activation of the parent calix[4]arene, undergoes C(methylene)-C(aryl) bond cleavage followed by insertion of an alkyne to provide a ring-expanded calix[4]arene complex. Removal of the iridium metal from the resulting complex was readily accomplished by a simple treatment with an acid. The developed sequential method affords novel unsymmetrical, monofunctionalized macrocyclic compounds via 3 steps from the parent calix[4]arene in good yield. The unique unsymmetrical structures of the alkyne-inserted macrocycles were evaluated by X-ray single crystal analyses. On the basis of theoretical calculations, we propose a reaction mechanism involving an uncommon C-C bond cleavage step through δ-carbon elimination for the ring enlargement process.
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Affiliation(s)
- Takahiro Iwamoto
- Department of Applied Chemistry, Faculty of Science and Engineering, Chuo University, 1-13-27 Kasuga, Bunkyo-ku, Tokyo, 112-8551, Japan
- Present address of Dr. Iwamoto: Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto, 606-8585, Japan
| | - Hibiki Hasegawa
- Department of Applied Chemistry, Faculty of Science and Engineering, Chuo University, 1-13-27 Kasuga, Bunkyo-ku, Tokyo, 112-8551, Japan
| | - Daiki Mori
- Department of Applied Chemistry, Faculty of Science and Engineering, Chuo University, 1-13-27 Kasuga, Bunkyo-ku, Tokyo, 112-8551, Japan
| | - Takuya Yamazaki
- Department of Applied Chemistry, Faculty of Science and Engineering, Chuo University, 1-13-27 Kasuga, Bunkyo-ku, Tokyo, 112-8551, Japan
| | - Kanako Fujinuki
- Department of Applied Chemistry, Faculty of Science and Engineering, Chuo University, 1-13-27 Kasuga, Bunkyo-ku, Tokyo, 112-8551, Japan
| | - Youichi Ishii
- Department of Applied Chemistry, Faculty of Science and Engineering, Chuo University, 1-13-27 Kasuga, Bunkyo-ku, Tokyo, 112-8551, Japan
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3
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Yu S, Yuan M, Xie W, Ye Z, Qin T, Yu N, Yang X. Catalytic Enantioselective Synthesis of Inherently Chiral Calix[4]arenes via Sequential Povarov Reaction and Aromatizations. Angew Chem Int Ed Engl 2024:e202410628. [PMID: 38973580 DOI: 10.1002/anie.202410628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2024] [Revised: 07/05/2024] [Accepted: 07/05/2024] [Indexed: 07/09/2024]
Abstract
Inherently chiral calix[4]arenes represent a unique type of chiral molecules with significant applications, yet their catalytic enantioselective synthesis remains largely underexplored. We report herein the catalytic enantioselective synthesis of inherently chiral calix[4]arenes through the sequential organocatalyzed enantioselective Povarov reaction and aromatizations. The chiral phosphoric acid catalyzed three-component Povarov reaction involving amino group-substituted calix[4]arenes, aldehydes and (di)enamides desymmetrized the prochiral calix[4]arene substrates, which was followed by various aromatization methods, resulting in a diverse array of novel quinoline-containing calix[4]arenes with good yields and high enantioselectivities (up to 75 % yield, 99 % ee). The large-scale enantioselective synthesis and diverse derivatizations of the chiral calix[4]arene products highlight the value of this method. Furthermore, preliminary exploration into their photophysical and chiroptical properties demonstrate the potential applications of these novel calix[4]arene molecules.
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Affiliation(s)
- Shaoze Yu
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, China
| | - Mengyao Yuan
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, China
| | - Wansen Xie
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, China
| | - Zidan Ye
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, China
| | - Tianren Qin
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, China
| | - Na Yu
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, China
| | - Xiaoyu Yang
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, China
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4
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Jiang YK, Tian YL, Feng J, Zhang H, Wang L, Yang WA, Xu XD, Liu RR. Organocatalytic Enantioselective Synthesis of Inherently Chiral Calix[4]arenes. Angew Chem Int Ed Engl 2024:e202407752. [PMID: 38844430 DOI: 10.1002/anie.202407752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2024] [Indexed: 07/18/2024]
Abstract
Inherently chiral calix[4]arenes are an excellent structural scaffold for enantioselective synthesis, chiral recognition, sensing, and circularly polarized luminescence. However, their catalytic enantioselective synthesis remains challenging. Herein, we report an efficient synthesis of inherently chiral calix[4]arene derivatives via cascade enantioselective cyclization and oxidation reactions. The three-component reaction features a broad substrate scope (33 examples), high efficiency (up to 90 % yield), and excellent enantioselectivity (>95 % ee on average). The potential applications of calix[4]arene derivatives are highlighted by their synthetic transformation and a detailed investigation of their photophysical and chiroptical properties.
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Affiliation(s)
- Yu-Kun Jiang
- College of Chemistry and Chemical Engineering, Qingdao University, Ningxia Road 308#, Qingdao, 266071, China
| | - Yong-Le Tian
- College of Chemistry and Chemical Engineering, Qingdao University, Ningxia Road 308#, Qingdao, 266071, China
| | - Jia Feng
- College of Chemistry and Chemical Engineering, Qingdao University, Ningxia Road 308#, Qingdao, 266071, China
| | - Huan Zhang
- College of Chemistry and Chemical Engineering, Qingdao University, Ningxia Road 308#, Qingdao, 266071, China
| | - Lei Wang
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225002, China
| | - Wei-Ao Yang
- School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, China
| | - Xing-Dong Xu
- School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, China
| | - Ren-Rong Liu
- College of Chemistry and Chemical Engineering, Qingdao University, Ningxia Road 308#, Qingdao, 266071, China
- Key Laboratory of Shandong Provincial Universities for Functional Molecules and Materials, Qingdao University, Ningxia Road 308#, Qingdao, 266071, China
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5
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Li XC, Cheng Y, Wang XD, Tong S, Wang MX. De novo synthesis of inherently chiral heteracalix[4]aromatics from enantioselective macrocyclization enabled by chiral phosphoric acid-catalyzed intramolecular S NAr reaction. Chem Sci 2024; 15:3610-3615. [PMID: 38455024 PMCID: PMC10915842 DOI: 10.1039/d3sc06436k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Accepted: 01/24/2024] [Indexed: 03/09/2024] Open
Abstract
We report herein the synthesis of highly enantiopure inherently chiral N3,O-calix[2]arene[2]triazines from enantioselective macrocyclization enabled by chiral phosphoric acid-catalyzed intramolecular nucleophilic aromatic substitution reaction. In contrast to documented examples, the inherent chirality of the acquired compounds arises from one heteroatom difference in the linking positions of heteracalix[4](het)arenes.
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Affiliation(s)
- Xing-Chi Li
- College of Chemistry, Beijing Normal University Beijing 100875 China
| | - Ying Cheng
- College of Chemistry, Beijing Normal University Beijing 100875 China
| | - Xu-Dong Wang
- Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences Beijing 100190 China
| | - Shuo Tong
- MOE Key Laboratory of Bioorganic Phosphorous Chemistry and Chemical Biology, Department of Chemistry, Tsinghua University Beijing 100084 China
| | - Mei-Xiang Wang
- MOE Key Laboratory of Bioorganic Phosphorous Chemistry and Chemical Biology, Department of Chemistry, Tsinghua University Beijing 100084 China
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6
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Li JH, Li XK, Feng J, Yao W, Zhang H, Lu CJ, Liu RR. Organocatalytic Enantioselective Synthesis of Seven-Membered Ring with Inherent Chirality. Angew Chem Int Ed Engl 2024; 63:e202319289. [PMID: 38185722 DOI: 10.1002/anie.202319289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Revised: 01/04/2024] [Accepted: 01/05/2024] [Indexed: 01/09/2024]
Abstract
Inherent chirality is used to describe chiral cyclic molecules devoid of central, axial, planar, or helical chirality and has tremendous applications in chiral recognition and enantioselective synthesis. Catalytic and divergent syntheses of inherently chiral molecules have attracted increasing interest from chemists. Herein, we report the enantioselective synthesis of inherently chiral tribenzocycloheptene derivatives via chiral phosphoric acid (CPA)-catalyzed condensation of cyclic ketones and hydroxylamines. This chemistry paves the way to accessing the less stable derivatives of 7-membered rings with inherent chirality. A series of chiral tribenzocycloheptene oxime ethers was synthesized in good yields (up to 97 %) with excellent enantioselectivities (up to 99 % ee).
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Affiliation(s)
- Jia-Hao Li
- College of Chemistry and Chemical Engineering, Qingdao University, NingXia Road 308#, Qingdao, 266071, China
| | - Xiao-Kai Li
- College of Chemistry and Chemical Engineering, Qingdao University, NingXia Road 308#, Qingdao, 266071, China
| | - Jia Feng
- College of Chemistry and Chemical Engineering, Qingdao University, NingXia Road 308#, Qingdao, 266071, China
| | - Wang Yao
- College of Chemistry and Chemical Engineering, Qingdao University, NingXia Road 308#, Qingdao, 266071, China
| | - Huan Zhang
- College of Chemistry and Chemical Engineering, Qingdao University, NingXia Road 308#, Qingdao, 266071, China
| | - Chuan-Jun Lu
- College of Chemistry and Chemical Engineering, Qingdao University, NingXia Road 308#, Qingdao, 266071, China
| | - Ren-Rong Liu
- College of Chemistry and Chemical Engineering, Qingdao University, NingXia Road 308#, Qingdao, 266071, China
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7
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Niu X, Zhao R, Yan S, Pang Z, Li H, Yang X, Wang K. Chiral Materials: Progress, Applications, and Prospects. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2303059. [PMID: 37217989 DOI: 10.1002/smll.202303059] [Citation(s) in RCA: 17] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 05/10/2023] [Indexed: 05/24/2023]
Abstract
Chirality is a universal phenomenon in molecular and biological systems, denoting an asymmetric configurational property where an object cannot be superimposed onto its mirror image by any kind of translation or rotation, which is ubiquitous on the scale from neutrinos to spiral galaxies. Chirality plays a very important role in the life system. Many biological molecules in the life body show chirality, such as the "codebook" of the earth's biological diversity-DNA, nucleic acid, etc. Intriguingly, living organisms hierarchically consist of homochiral building blocks, for example, l-amino acids and d-sugars with unknown reason. When molecules with chirality interact with these chiral factors, only one conformation favors the positive development of life, that is, the chiral host environment can only selectively interact with chiral molecules of one of the conformations. The differences in chiral interactions are often manifested by chiral recognition, mutual matching, and interactions with chiral molecules, which means that the stereoselectivity of chiral molecules can produce changes in pharmacodynamics and pathology. Here, the latest investigations are summarized including the construction and applications of chiral materials based on natural small molecules as chiral source, natural biomacromolecules as chiral sources, and the material synthesized by design as a chiral source.
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Affiliation(s)
- Xiaohui Niu
- College of Petrochemical Technology, Lanzhou University of Technology, Lanzhou, 730050, P. R. China
| | - Rui Zhao
- College of Petrochemical Technology, Lanzhou University of Technology, Lanzhou, 730050, P. R. China
| | - Simeng Yan
- College of Petrochemical Technology, Lanzhou University of Technology, Lanzhou, 730050, P. R. China
| | - Zengwei Pang
- College of Petrochemical Technology, Lanzhou University of Technology, Lanzhou, 730050, P. R. China
| | - Hongxia Li
- College of Petrochemical Technology, Lanzhou University of Technology, Lanzhou, 730050, P. R. China
| | - Xing Yang
- College of Polymer Science and Engineering, Sichuan University, Chengdu, 610065, P. R. China
| | - Kunjie Wang
- College of Petrochemical Technology, Lanzhou University of Technology, Lanzhou, 730050, P. R. China
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8
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Wang KY, Zhang J, Hsu YC, Lin H, Han Z, Pang J, Yang Z, Liang RR, Shi W, Zhou HC. Bioinspired Framework Catalysts: From Enzyme Immobilization to Biomimetic Catalysis. Chem Rev 2023; 123:5347-5420. [PMID: 37043332 PMCID: PMC10853941 DOI: 10.1021/acs.chemrev.2c00879] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2022] [Indexed: 04/13/2023]
Abstract
Enzymatic catalysis has fueled considerable interest from chemists due to its high efficiency and selectivity. However, the structural complexity and vulnerability hamper the application potentials of enzymes. Driven by the practical demand for chemical conversion, there is a long-sought quest for bioinspired catalysts reproducing and even surpassing the functions of natural enzymes. As nanoporous materials with high surface areas and crystallinity, metal-organic frameworks (MOFs) represent an exquisite case of how natural enzymes and their active sites are integrated into porous solids, affording bioinspired heterogeneous catalysts with superior stability and customizable structures. In this review, we comprehensively summarize the advances of bioinspired MOFs for catalysis, discuss the design principle of various MOF-based catalysts, such as MOF-enzyme composites and MOFs embedded with active sites, and explore the utility of these catalysts in different reactions. The advantages of MOFs as enzyme mimetics are also highlighted, including confinement, templating effects, and functionality, in comparison with homogeneous supramolecular catalysts. A perspective is provided to discuss potential solutions addressing current challenges in MOF catalysis.
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Affiliation(s)
- Kun-Yu Wang
- Department
of Chemistry, Texas A&M University, College Station, Texas 77843, United States
- Department
of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry
(MOE) and Renewable Energy Conversion and Storage Center (RECAST),
College of Chemistry, Nankai University, Tianjin 300071, China
| | - Jiaqi Zhang
- Department
of Chemistry, Texas A&M University, College Station, Texas 77843, United States
- Department
of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry
(MOE) and Renewable Energy Conversion and Storage Center (RECAST),
College of Chemistry, Nankai University, Tianjin 300071, China
| | - Yu-Chuan Hsu
- Department
of Chemistry, Texas A&M University, College Station, Texas 77843, United States
| | - Hengyu Lin
- Department
of Chemistry, Texas A&M University, College Station, Texas 77843, United States
| | - Zongsu Han
- Department
of Chemistry, Texas A&M University, College Station, Texas 77843, United States
- Department
of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry
(MOE) and Renewable Energy Conversion and Storage Center (RECAST),
College of Chemistry, Nankai University, Tianjin 300071, China
| | - Jiandong Pang
- Department
of Chemistry, Texas A&M University, College Station, Texas 77843, United States
- School
of Materials Science and Engineering, Tianjin Key Laboratory of Metal
and Molecule-Based Material Chemistry, Nankai
University, Tianjin 300350, China
| | - Zhentao Yang
- Department
of Chemistry, Texas A&M University, College Station, Texas 77843, United States
- Department
of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry
(MOE) and Renewable Energy Conversion and Storage Center (RECAST),
College of Chemistry, Nankai University, Tianjin 300071, China
| | - Rong-Ran Liang
- Department
of Chemistry, Texas A&M University, College Station, Texas 77843, United States
| | - Wei Shi
- Department
of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry
(MOE) and Renewable Energy Conversion and Storage Center (RECAST),
College of Chemistry, Nankai University, Tianjin 300071, China
| | - Hong-Cai Zhou
- Department
of Chemistry, Texas A&M University, College Station, Texas 77843, United States
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9
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Giovanardi G, Scarica G, Pirovano V, Secchi A, Cera G. Gold(I)-catalysed hydroarylations of alkynes for the synthesis of inherently chiral calix[4]arenes. Org Biomol Chem 2023; 21:4072-4083. [PMID: 37128860 DOI: 10.1039/d3ob00603d] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
We describe the first gold(I)-catalysed intramolecular hydroarylation of alkynes for the straightforward synthesis of inherently chiral calix[4]arenes. This step- and atom-economical approach, which exploits a formal meta-functionalisation of the calix[4]arene macrocycle, is able to deliver an ample family of N-heterocyclic, chiral compounds in high yields and functional group tolerance.
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Affiliation(s)
- Gabriele Giovanardi
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università di Parma, Parco Area delle Scienze 17/A, 43124 Parma, Italy.
| | - Gabriele Scarica
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università di Parma, Parco Area delle Scienze 17/A, 43124 Parma, Italy.
| | - Valentina Pirovano
- Dipartimento di Scienze Farmaceutiche, Sezione di Chimica Generale e Organica "A. Marchesini", Università degli Studi di Milano, Via Venezian, 21, 20133 Milano, Italy
| | - Andrea Secchi
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università di Parma, Parco Area delle Scienze 17/A, 43124 Parma, Italy.
| | - Gianpiero Cera
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università di Parma, Parco Area delle Scienze 17/A, 43124 Parma, Italy.
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10
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Zhang X, Tong S, Zhu J, Wang MX. Inherently chiral calixarenes by a catalytic enantioselective desymmetrizing cross-dehydrogenative coupling. Chem Sci 2023; 14:827-832. [PMID: 36755707 PMCID: PMC9890570 DOI: 10.1039/d2sc06234h] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Accepted: 12/05/2022] [Indexed: 12/12/2022] Open
Abstract
Under the catalysis of PdBr2 and a chiral phosphoramidite ligand, the upper-rim mono (2-bromoaroyl)-substituted calix[4]arene derivatives underwent a facile enantioselective desymmetrization reaction to afford 9H-fluorene-embedded inherently chiral calixarenes in good yields with excellent enantioselectivities. The transannular dehydrogenative arene-arene coupling reaction proceeded most probably through an oxidative addition of the Caryl-Br bond to a ligated palladium catalyst followed by a sequence of an enantioselective 1,5-palladium migration and an intramolecular C-H arylation sequence. This new family of inherently chiral calixarenes possesses unique chiroptical properties thanks to their highly rigid structure induced by the 9H-fluorene segment.
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Affiliation(s)
- Xin Zhang
- Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University Beijing 100084 China http://mascl.group
| | - Shuo Tong
- Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University Beijing 100084 China http://mascl.group
| | - Jieping Zhu
- Laboratory of Synthesis and Natural Products (LSPN), Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL-SB-ISIC-LSPNBCH5304CH-1015 LausanneSwitzerland
| | - Mei-Xiang Wang
- Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University Beijing 100084 China http://mascl.group
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11
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The Use of Anhydrous Barium Hydroxide for Selective Alkylation of Dialkyloxy- tert-butyl-calix[4]arenes. Molecules 2023; 28:molecules28031089. [PMID: 36770756 PMCID: PMC9921822 DOI: 10.3390/molecules28031089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Revised: 01/15/2023] [Accepted: 01/19/2023] [Indexed: 01/24/2023] Open
Abstract
A practical method of selective alkylation of the third hydroxyl group of disubstituted tert-butyl-calix[4]arenes using anhydrous barium hydroxide as a base was developed in this study. The use of this method in the synthesis of inherently chiral derivatives is shown herein.
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12
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Zhang YZ, Xu MM, Si XG, Hou JL, Cai Q. Enantioselective Synthesis of Inherently Chiral Calix[4]arenes via Palladium-Catalyzed Asymmetric Intramolecular C–H Arylations. J Am Chem Soc 2022; 144:22858-22864. [DOI: 10.1021/jacs.2c10606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Yu-Zhen Zhang
- Department of Chemistry, Fudan University, 220 Handan Road, Shanghai 200433, China
| | - Meng-Meng Xu
- Department of Chemistry, Fudan University, 220 Handan Road, Shanghai 200433, China
| | - Xu-Ge Si
- Department of Chemistry, Fudan University, 220 Handan Road, Shanghai 200433, China
| | - Jun-Li Hou
- Department of Chemistry, Fudan University, 220 Handan Road, Shanghai 200433, China
| | - Quan Cai
- Department of Chemistry, Fudan University, 220 Handan Road, Shanghai 200433, China
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13
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The Formation of Inherently Chiral Calix[4]quinolines by Doebner-Miller Reaction of Aldehydes and Aminocalixarenes. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27238545. [PMID: 36500638 PMCID: PMC9736694 DOI: 10.3390/molecules27238545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 11/29/2022] [Accepted: 12/01/2022] [Indexed: 12/12/2022]
Abstract
The formation of inherently chiral calix[4]arenes by the intramolecular cyclization approach suffers from a limited number of suitable substrates for these reactions. Here, we report an easy way to prepare one class of such compounds: calixquinolines, which can be obtained by the reaction of aldehydes with easily accessible aminocalix[4]arenes in acidic conditions (Doebner-Miller reaction). The synthetic procedure represents a very straightforward approach to the inherently chiral macrocyclic systems. The complexation studies revealed the ability of these compounds to complex quaternary ammonium salts with different stoichiometries depending on the guest molecules. At the same time, the ability of enantioselective complexation of chiral N-methylammonium salts was demonstrated.
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14
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Abstract
Calixarenes represent very popular building blocks in supramolecular chemistry. Compared to other macrocyclic families, they exhibit an almost infinite possibility of derivatization of the basic skeleton, which makes them ideal candidates for the design of new receptors or other functional systems. Although the chemistry of calixarenes is well established, there are still some substitution patterns that are unavailable or require a very lengthy synthetic approach. Among such synthetic challenges is the meta substitution of the aromatic skeleton (relative to phenolic oxygen), which, in conjunction with the 3D structure of calixarenes, leads to the inherent chirality and enables the synthesis of derivatives with a hitherto undescribed topology. This review deals with the current achievements in the meta substitution of calixarenes.
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Affiliation(s)
- Pavel Lhoták
- Department of Organic Chemistry, University of Chemistry and Technology, Prague (UCTP), Technická 5, 166 28 Prague 6, Czech Republic.
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15
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Trybrat OO, Yesypenko OA, Rusanov EB, Kalchenko VI. Synthesis and separation of diastereomeric N-(1-phenylethyl)amides of inherently chiral hydroxydibenzoyloxy-calix[4]arene acetic acids. Chirality 2022; 34:1466-1471. [PMID: 36031686 DOI: 10.1002/chir.23503] [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: 07/04/2022] [Revised: 08/15/2022] [Accepted: 08/17/2022] [Indexed: 11/12/2022]
Abstract
A preparative method for the synthesis of optically pure N-(1-phenylethyl)amides of inherently chiral (cR)- and (cS)-dibenzoyloxy-calix[4]arene acetic acids has been developed. Their absolute stereochemical configuration was determined by X-ray diffraction analysis.
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Affiliation(s)
| | | | - Eduard B Rusanov
- Institute of Organic Chemistry, NAS of Ukraine, Kyiv-94, Ukraine
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16
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Lin S, Zeng S, Li Z, Fan Q, Guo J. Turn-On Mode Circularly Polarized Luminescence in Self-Organized Cholesteric Superstructure for Active Photonic Applications. ACS APPLIED MATERIALS & INTERFACES 2022; 14:30362-30370. [PMID: 35758230 DOI: 10.1021/acsami.2c05678] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Developing circularly polarized luminescence (CPL)-active materials with a large luminescence dissymmetry factor (glum) or stimulus responses has evoked a lot of interest in the past few years; however, the light-controllable "on/off" CPL still remains a challenge. Here, a novel diarylethene-based chiral fluorescent photoswitch featuring "turn-on" CPL characteristic is developed, designated as (S,S)-switch 6, which can undergo reversible photocyclization/cycloreversion upon irradiation with UV and visible light. (S,S)-Switch 6 shows completely reversible "off-on-off"-responsive CPL behavior in solution. By doping (S,S)-switch 6 into nematic liquid crystals (LCs), the consequent luminescent cholesteric LCs (CLCs) exhibit a larger glum value enhanced 2 orders of magnitude when irradiated with UV light, which can be attributed to the highly ordered helical arrangement of CLCs. The potentials of this turn-on type CPL material for anticounterfeiting and information encryption are illustrated. Furthermore, the visualization of circularly polarized (CP) fluorescent patterns can be successfully achieved by constructing the double-layer CPL system consisting of a CP luminescent layer and a polymer cholesteric reflective layer. The proposed concept establishes a light-controlled off-on-off CPL platform that is of tremendous potential for applications in multi-informational data storage and encryption devices.
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Affiliation(s)
- Siyang Lin
- Key Laboratory of Carbon Fibers and Functional Polymers, Ministry of Education, and College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Shuangshuang Zeng
- Key Laboratory of Carbon Fibers and Functional Polymers, Ministry of Education, and College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Ziyuan Li
- Key Laboratory of Carbon Fibers and Functional Polymers, Ministry of Education, and College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Qingyan Fan
- Key Laboratory of Carbon Fibers and Functional Polymers, Ministry of Education, and College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Jinbao Guo
- Key Laboratory of Carbon Fibers and Functional Polymers, Ministry of Education, and College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
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17
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Influence of the Configuration of an Asymmetric Carbon Center on the Parameters of the Nuclear Magnetic Resonance Spectra of Inherently Chiral N-(1-Phenylethyl)Amides of Calix[4]Arene Acetic Acids: Determination of the Absolute Stereochemical Configuration of the Macrocycle. THEOR EXP CHEM+ 2022. [DOI: 10.1007/s11237-022-09722-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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18
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Tlustý M, Eigner V, Dvořáková H, Lhoták P. The atropisomeric dynamic behaviour of symmetrical N-acylated amine-bridged calix[4]arenes. NEW J CHEM 2022. [DOI: 10.1039/d2nj01533a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
N-acylated amine-bridged calix[4]arenes exhibit unusual dynamic behaviour which can be attributed to the restricted rotation around the amide C–N bond.
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Affiliation(s)
- M. Tlustý
- Department of Organic Chemistry, University of Chemistry and Technology, Prague (UCTP), Technická 5, 166 28 Prague 6, Czech Republic
| | - V. Eigner
- Department of Solid State Chemistry, UCTP, Technická 5, 166 28 Prague 6, Czech Republic
| | - H. Dvořáková
- Laboratory of NMR Spectroscopy, UCTP, Technická 5, 166 28 Prague 6, Czech Republic
| | - P. Lhoták
- Department of Organic Chemistry, University of Chemistry and Technology, Prague (UCTP), Technická 5, 166 28 Prague 6, Czech Republic
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19
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Kalchenko OI, Trybrat OO, Yesypenko OA, Dyakonenko VV, Shishkina SV, Kalchenko VI. Inherently chiral dialkyloxy-calix[4]arene acetic acids as enantiodiscriminating additives for high-performance liquid chromatography separation of d,l-amino acids. Chirality 2021; 33:722-730. [PMID: 34431566 DOI: 10.1002/chir.23355] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 07/26/2021] [Accepted: 07/28/2021] [Indexed: 11/06/2022]
Abstract
Inherently chiral dialkyloxy-calix[4]arene acetic acids with asymmetric placement of substituents on the lower rim of the macrocycle were first studied as enantiodiscriminating additives to the mobile phase MeCN/H2 O/HCOOH (75/25/0.02 by volume) in the high-performance liquid chromatography (HPLC) separation of d,l-alanine and d,l-valine on the achiral stationary phase ZORBAX Original CN. The dependence of enantio-binding properties on the position of alkyl groups is demonstrated. The highest resolution (1.65) and enantioselectivity (1.80) were obtained for the 1,2-dipropyloxy-calix[4]arene acetic acid.
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20
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Kazantseva ZI, Koshets IA, Trybrat OO, Yesypenko OA, Kalchenko VI. Recognition of 1-phenylethylamine enantiomers by thin solid films of inherently chiral calix[4]arene. Chirality 2021; 33:703-709. [PMID: 34390045 DOI: 10.1002/chir.23351] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 07/14/2021] [Accepted: 07/26/2021] [Indexed: 11/12/2022]
Abstract
The enantiodiscrimination properties of stereomerically pure inherently chiral calix[4]arene acetic acids, as well as their esters and amides in relation to 1-phenylethylamine stereoisomers in liquid and gaseous phases were studied by means of proton magnetic resonance spectroscopy (1 H NMR) and quartz crystal microbalance (QCM) techniques. Series of QCM sensors with thin films of inherently chiral calix[4]arenes, immobilized on the quartz resonator surfaces by spin-coating and spreading drop methods have been fabricated. It was shown that sensors based on calix[4]arene acetic acids are able to recognize R- and S-forms of 1-phenylethylamine in gaseous phase under concentration level of 10-400 ppm.
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Affiliation(s)
- Zoya I Kazantseva
- Institute of Semiconductor Physics, National Academy of Sciences of Ukraine, Kiev, Ukraine
| | - Igor A Koshets
- Institute of Semiconductor Physics, National Academy of Sciences of Ukraine, Kiev, Ukraine
| | - Oleksandr O Trybrat
- Institute of Organic Chemistry, National Academy of Sciences of Ukraine, Kiev, Ukraine
| | - Oleksandr A Yesypenko
- Institute of Organic Chemistry, National Academy of Sciences of Ukraine, Kiev, Ukraine
| | - Vitali I Kalchenko
- Institute of Organic Chemistry, National Academy of Sciences of Ukraine, Kiev, Ukraine
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21
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Trybrat OO, Yesypenko OA, Shishkina SV, Rusanov EB, Karpichev YA, Kalchenko VI. 25‐Propyloxy‐26,27‐dibenzoyloxy‐calix[4]arene as Precursor for the Synthesis of Inherently Chiral Calixarenes. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100624] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Oleksandr O. Trybrat
- Institute of Organic Chemistry National Academy of Sciences of Ukraine Murmanska Str., 5 Kyiv-94 02660 Ukraine
- Tallinn University of Technology Ehitajate Tee 5 Tallinn 19086 Estonia
| | - Oleksandr A. Yesypenko
- Institute of Organic Chemistry National Academy of Sciences of Ukraine Murmanska Str., 5 Kyiv-94 02660 Ukraine
| | - Svitlana V. Shishkina
- SSI “Institute for Single Crystals” National Academy of Sciences of Ukraine Nauky Ave. 60 Kharkiv 61001 Ukraine
| | - Eduard B. Rusanov
- Institute of Organic Chemistry National Academy of Sciences of Ukraine Murmanska Str., 5 Kyiv-94 02660 Ukraine
| | | | - Vitaly I. Kalchenko
- Institute of Organic Chemistry National Academy of Sciences of Ukraine Murmanska Str., 5 Kyiv-94 02660 Ukraine
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22
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Peng XB, He D, Sun GN, Yu Y, Ma YH, Tang SA, Dong WL, Li SY. Mononitration of a Calix[4]arene Methylene Bridge: Synthesis and Preliminary Catalysis Performances of Bridging Chiral p- tert-Butylcalix[4]arenes with a Monoamino Bridge Substituent in a 1,3-Alternate Conformation. J Org Chem 2021; 86:3952-3959. [PMID: 33577735 DOI: 10.1021/acs.joc.0c02795] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
In order to prepare bridging chiral p-tert-butylcalix[4]crown-5 with a mononitro bridge substituent in a 1,3-alternate conformation, a mononitration method of calix[4]arene bridging methylene has been first developed with tert-butyl nitrite as a nitration reagent. The effects of solvent, reaction temperature, reaction time, and nitration reagent dosage on bridge mononitration have been deeply explored to obtain an optimal nitration condition. The facile nitration presents a new key for calix[4]arene bridge derivatization. After further modification and diastereoisomeric resolution, a pair of bridging chiral p-tert-butylcalix[4]arenes with a monoamino bridge substituent were produced from the bridge-mono-nitrated calix[4]arene. Their preliminary catalysis results in the Henry reaction show good catalytic activities (up to 95% yield) and still low but obviously enhanced enantioselectivities (up to 22.3% ee from 7a, 6% ee from 1), which confirms that the structural transformation indeed improves asymmetric catalysis performances of bridging chiral calix[4]crown-5 amines in a 1,3-alternate conformation.
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Affiliation(s)
- Xin-Bang Peng
- School of Pharmacy, Tianjin Medical University, 300070 Tianjin, China
| | - Di He
- School of Pharmacy, Tianjin Medical University, 300070 Tianjin, China
| | - Guan-Nan Sun
- Tianjin Medical University General Hospital, 300070 Tianjin, China.,Tianjin Vocational College of Bioengineering, 300462 Tianjin, China
| | - Yu Yu
- School of Pharmacy, Tianjin Medical University, 300070 Tianjin, China
| | - Ying-Hong Ma
- School of Pharmacy, Tianjin Medical University, 300070 Tianjin, China
| | - Sheng-An Tang
- School of Pharmacy, Tianjin Medical University, 300070 Tianjin, China
| | - Wei-Li Dong
- School of Pharmacy, Tianjin Medical University, 300070 Tianjin, China
| | - Shao-Yong Li
- School of Pharmacy, Tianjin Medical University, 300070 Tianjin, China
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23
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Kortus D, Eigner V, Lhoták P. Regio- and stereoselectivity of spirodienone formation in 2,14-dithiacalix[4]arene. NEW J CHEM 2021. [DOI: 10.1039/d1nj01257f] [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
Within the mixed-bridge system the thiacalixarene fragment (Ar–S–Ar) is much more prone to spirocyclization than the calixarene one (Ar–CH2–Ar).
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Affiliation(s)
- D. Kortus
- Department of Organic Chemistry
- University of Chemistry and Technology
- Prague (UCTP)
- 166 28 Prague 6
- Czech Republic
| | - V. Eigner
- Department of Solid State Chemistry
- UCTP
- 166 28 Prague 6
- Czech Republic
| | - P. Lhoták
- Department of Organic Chemistry
- University of Chemistry and Technology
- Prague (UCTP)
- 166 28 Prague 6
- Czech Republic
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24
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Yesypenko OA, Osipova AO, Tribrat OO, Kravchenko SO, Usachov OM, Dyakonenko VV, Ryabitskii AB, Pirozhenko VV, Shishkina SV, Rozhenko AB, Kalchenko VI. Synthesis and enantiorecognition properties of stereoisomeres of inherently chiral propyloxy-octyloxy-calix[4]arene acetic acids. Tetrahedron 2021. [DOI: 10.1016/j.tet.2020.131894] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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25
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Zhu Y, Ge L, Chen Y, Chen Y, Liang Y, Wang Y, Yang K. Dehydroabietic acid-based chiral ionic liquids: Their synthesis and potential enantiomeric recognition ability. Tetrahedron 2020. [DOI: 10.1016/j.tet.2020.131567] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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26
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Hassibi E, Ganjali ST, Hashemi MM, Zadmard R, Dehaghi SM. Conformational Mobility Study in Mono Quinone Derivative of Calix[4]arene by Low Temperature NMR Spectroscopy. LETT ORG CHEM 2020. [DOI: 10.2174/1570178616666190228130119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
:
Calix[4]monoquinone (3) has been synthesized by oxidation of rigid cone conformation of
tripropoxy calix[4]arene (2), and conformational characteristics of this molecule have been studied by
means of dynamic nuclear magnetic resonance (DNMR) and HH- correlated nuclear magnetic resonance
spectroscopy (HH-COSY NMR). On the basis of the data that have been obtained, free Gibbs
energy of activation (ΔG#) for quinone ring interconversion process of 3 was determined 12.3±0.05
Kcal/mol by coalescence approximation method.
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Affiliation(s)
- Elham Hassibi
- Department of Chemistry, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | | | | | - Reza Zadmard
- Chemistry and Chemical Engineering Research Center of Iran, Tehran, Iran
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27
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Tlustý M, Dvořáková H, Čejka J, Kohout M, Lhoták P. Regioselective formation of the quinazoline moiety on the upper rim of calix[4]arene as a route to inherently chiral systems. NEW J CHEM 2020. [DOI: 10.1039/d0nj01035a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
N-acyl aminocalix[4]arenes were cyclized with nitriles to afford the expected quinazolines only in the case of para-substituted series. This strategy represents a new route to inherently chiral calixarenes potentially useful as fluorescent receptors.
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Affiliation(s)
- M. Tlustý
- Department of Organic Chemistry
- University of Chemistry and Technology
- Prague (UCTP)
- 166 28 Prague 6
- Czech Republic
| | - H. Dvořáková
- Laboratory of NMR Spectroscopy
- UCTP
- 166 28 Prague 6
- Czech Republic
| | - J. Čejka
- Department of Solid State Chemistry, UCTP
- 166 28 Prague 6
- Czech Republic
| | - M. Kohout
- Department of Organic Chemistry
- University of Chemistry and Technology
- Prague (UCTP)
- 166 28 Prague 6
- Czech Republic
| | - P. Lhoták
- Department of Organic Chemistry
- University of Chemistry and Technology
- Prague (UCTP)
- 166 28 Prague 6
- Czech Republic
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28
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Kortus D, Kundrát O, Tlustý M, Čejka J, Dvořáková H, Lhoták P. Inherent chirality through a simple dialkylation of 2,14-dithiacalix[4]arene. NEW J CHEM 2020. [DOI: 10.1039/d0nj03468a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Dialkylation of 2,14-dithiacalix[4]arene offers the most straightforward way to inherently chiral calixarene-based macrocycles.
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Affiliation(s)
- D. Kortus
- Department of Organic Chemistry
- University of Chemistry and Technology
- Prague (UCTP)
- 166 28 Prague 6
- Czech Republic
| | - O. Kundrát
- Department of Organic Chemistry
- University of Chemistry and Technology
- Prague (UCTP)
- 166 28 Prague 6
- Czech Republic
| | - M. Tlustý
- Department of Organic Chemistry
- University of Chemistry and Technology
- Prague (UCTP)
- 166 28 Prague 6
- Czech Republic
| | - J. Čejka
- Department of Solid State Chemistry
- UCTP
- 166 28 Prague 6
- Czech Republic
| | - H. Dvořáková
- Laboratory of NMR Spectroscopy
- UCTP
- 166 28 Prague 6
- Czech Republic
| | - P. Lhoták
- Department of Organic Chemistry
- University of Chemistry and Technology
- Prague (UCTP)
- 166 28 Prague 6
- Czech Republic
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29
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Inter and intra-phase conformerism in two calix [4]arenes. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2019.07.096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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30
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Tan DA, Massera C, Mocerino M. Partial functionalisation of C4-symmetric tetramethoxyresorcinarenes. Supramol Chem 2019. [DOI: 10.1080/10610278.2019.1620949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Daniel A. Tan
- Chemistry School of Molecular and Life Sciences, Curtin University, Perth, Australia
| | - Chiara Massera
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università degli Studi di Parma, Parma, Italy
| | - Mauro Mocerino
- Chemistry School of Molecular and Life Sciences, Curtin University, Perth, Australia
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31
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Tlustý M, Eigner V, Babor M, Kohout M, Lhoták P. Synthesis of upper rim-double-bridged calix[4]arenes bearing seven membered rings and related compounds. RSC Adv 2019; 9:22017-22030. [PMID: 35518866 PMCID: PMC9066730 DOI: 10.1039/c9ra05075b] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Accepted: 07/05/2019] [Indexed: 12/01/2022] Open
Abstract
Meta/meta- and meta/para-disubstituted organomercury calix[4]arenes in the cone conformation were transformed into corresponding amino derivatives. Acylation and subsequent intramolecular cyclization using the Bischler–Napieralski reaction provided, in the case of the meta/meta-series, double bridged calixarenes possessing seven membered rings on the upper rim. A similar synthetic strategy applied to meta/para-isomers allowed for the isolation of monobridged compounds bearing an additional trifluoroacetamido group located distally to seven-membered rings. Both series represent inherently chiral systems, which were successfully resolved using preparative chiral HPLC. The pure enantiomers exhibited a recognition ability towards selected chiral guest molecules as documented by the 1H NMR titration experiments. The absolute configuration of the phenyl-substituted enantiomer (meta/meta-) was confirmed by single crystal structure determination (X-ray). Calix[4]arenes bearing one or two bridges on the upper rim were prepared as novel inherently chiral derivatives potentially capable of chiral recognition.![]()
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Affiliation(s)
- M. Tlustý
- Department of Organic Chemistry
- University of Chemistry and Technology
- Prague (UCTP)
- 166 28 Prague 6
- Czech Republic
| | - V. Eigner
- Institute of Physics AS CR v.v.i
- 182 21 Prague 8
- Czech Republic
| | - M. Babor
- Department of Solid State Chemistry
- UCTP
- 166 28 Prague 6
- Czech Republic
| | - M. Kohout
- Department of Organic Chemistry
- University of Chemistry and Technology
- Prague (UCTP)
- 166 28 Prague 6
- Czech Republic
| | - P. Lhoták
- Department of Organic Chemistry
- University of Chemistry and Technology
- Prague (UCTP)
- 166 28 Prague 6
- Czech Republic
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32
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Tlustý M, Spálovská D, Babor M, Lhoták P. Synthesis of enantiomerically pure inherently chiral calix[4]arenes using the meta-substitution strategy. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2018.12.026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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33
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Zadmard R, Akbarzadeh A, Jalali MR. Highly functionalized calix[4]arenes via multicomponent reactions: synthesis and recognition properties. RSC Adv 2019; 9:19596-19605. [PMID: 35519416 PMCID: PMC9065295 DOI: 10.1039/c9ra03354h] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2019] [Accepted: 06/18/2019] [Indexed: 11/21/2022] Open
Abstract
Multicomponent reactions (MCRs) include several aspects of green chemistry principles, so it is obvious that chemists in different areas are increasingly interested in providing their product by multicomponent approaches. MCRs can be very useful in supramolecular chemistry, especially to produce novel supramolecular derivatives. Therefore, there are several reports of highly-functionalized calix[4]arene derivatives obtained by MCRs instead of conventional stepwise protocols during the last decade. In this paper, we have particularly focused on the exploitation of upper rim and lower rim substituted calix[4]arenes in multicomponent approaches as a facile and convenient synthetic strategy. The value of this method lies in its operational simplicity, mild reaction conditions and structural diversity of the products. Interestingly, in most cases the products afforded by this method offer unique features and applications which are highlighted in the following sections. Multicomponent reactions (MCRs) include several aspects of green chemistry principles, so it is obvious that chemists in different areas are increasingly interested in providing their product by multicomponent approaches.![]()
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Affiliation(s)
- Reza Zadmard
- Department of Organic Chemistry
- Chemistry and Chemical Engineering Research Center of Iran
- Tehran
- Iran
| | - Ali Akbarzadeh
- Department of Organic Chemistry
- Chemistry and Chemical Engineering Research Center of Iran
- Tehran
- Iran
| | - Mohammad Reza Jalali
- Department of Organic Chemistry
- Chemistry and Chemical Engineering Research Center of Iran
- Tehran
- Iran
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34
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Mouarrawis V, Plessius R, van der Vlugt JI, Reek JNH. Confinement Effects in Catalysis Using Well-Defined Materials and Cages. Front Chem 2018; 6:623. [PMID: 30622940 PMCID: PMC6308152 DOI: 10.3389/fchem.2018.00623] [Citation(s) in RCA: 101] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2018] [Accepted: 11/30/2018] [Indexed: 11/28/2022] Open
Abstract
This review focuses on the effects that confinement of molecular and heterogeneous catalysts with well-defined structure has on the selectivity and activity of these systems. A general introduction about catalysis and how the working principles of enzymes can be used as a source of inspiration for the preparation of catalysts with enhanced performance is provided. Subsequently, relevant studies demonstrate the importance of second coordination sphere effects in a broad sense (in homogeneous and heterogeneous catalysis). Firstly, we discuss examples involving zeolites, MOFs and COFs as heterogeneous catalysts with well-defined structures where confinement influences catalytic performance. Then, specific cases of homogeneous catalysts where non-covalent interactions determine the selectivity and activity are treated in detail. This includes examples based on cyclodextrins, calix[n]arenes, cucurbit[n]urils, and self-assembled container molecules. Throughout the review, the impact of confined spaces is emphasized and put into context, in order to get a better understanding of the effects of confinement on catalyst performance. In addition, this analysis intends to showcase the similarities between homogeneous and heterogeneous catalysts, which may aid the development of novel strategies.
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Affiliation(s)
| | | | - Jarl Ivar van der Vlugt
- Homogeneous, Supramolecular and Bio-Inspired Catalysis (HomKat) Group, Van 't Hoff Institute for Molecular Sciences (HIMS), University of Amsterdam, Amsterdam, Netherlands
| | - Joost N. H. Reek
- Homogeneous, Supramolecular and Bio-Inspired Catalysis (HomKat) Group, Van 't Hoff Institute for Molecular Sciences (HIMS), University of Amsterdam, Amsterdam, Netherlands
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35
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Liu WS, He D, Ma H, Weng XF, Ren SS, Liu X, Tang SA, Ma SK, Liu JM, Li SY. Bridging Chiral de-tert
-Butylcalix[4]arenes: Diastereomeric Crystallization-Based Optical Resolution and Determination of Absolute Configuration. ChemistrySelect 2018. [DOI: 10.1002/slct.201802804] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Wen-Shan Liu
- School of Pharmacy; Tianjin Medical University; 300070 Tianjin (P. R. China
| | - Di He
- School of Pharmacy; Tianjin Medical University; 300070 Tianjin (P. R. China
| | - Hao Ma
- School of Pharmacy; Tianjin Medical University; 300070 Tianjin (P. R. China
| | - Xiu-Fang Weng
- School of Pharmacy; Tianjin Medical University; 300070 Tianjin (P. R. China
| | - Shan-Shan Ren
- School of Pharmacy; Tianjin Medical University; 300070 Tianjin (P. R. China
| | - Xiong Liu
- School of Pharmacy; Tianjin Medical University; 300070 Tianjin (P. R. China
| | - Sheng-An Tang
- School of Pharmacy; Tianjin Medical University; 300070 Tianjin (P. R. China
| | - Shi-Kun Ma
- School of Pharmacy; Tianjin Medical University; 300070 Tianjin (P. R. China
| | - Jun-Min Liu
- School of Materials Science and Engineering; Sun Yat-Sen University; 510275 Guangzhou (PR China
| | - Shao-Yong Li
- School of Pharmacy; Tianjin Medical University; 300070 Tianjin (P. R. China
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36
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Durmaz M, Halay E, Bozkurt S. Recent applications of chiral calixarenes in asymmetric catalysis. Beilstein J Org Chem 2018; 14:1389-1412. [PMID: 29977403 PMCID: PMC6009176 DOI: 10.3762/bjoc.14.117] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2018] [Accepted: 05/17/2018] [Indexed: 12/13/2022] Open
Abstract
The use of calixarenes in asymmetric catalysis is receiving increasing attention due to their tunable three-dimensional molecular platforms along with their easy syntheses and versatile modification at the upper and lower rims. This review summarizes the recent progress of synthesis and use of chiral calixarenes in asymmetric syntheses which emerged later than 2010.
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Affiliation(s)
- Mustafa Durmaz
- Department of Chemistry Education, Ahmet Kelesoglu Education Faculty, Necmettin Erbakan University, 42090 Konya, Turkey
| | - Erkan Halay
- Department of Chemistry and Chemical Processing Technologies, Banaz Vocational School, Usak University, Usak, Turkey.,Scientific Analysis Technological Application and Research Center (UBATAM), Usak University, Usak, Turkey
| | - Selahattin Bozkurt
- Scientific Analysis Technological Application and Research Center (UBATAM), Usak University, Usak, Turkey.,Vocational School of Health Services, Usak University, 64200 Usak, Turkey
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37
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Cuřínová P, Dračínský M, Jakubec M, Tlustý M, Janků K, Izák P, Holakovský R. Enantioselective complexation of 1-phenylethanol with chiral compounds bearing urea moiety. Chirality 2018; 30:798-806. [PMID: 29578615 DOI: 10.1002/chir.22855] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Revised: 02/21/2018] [Accepted: 02/26/2018] [Indexed: 11/12/2022]
Abstract
A detailed study of diastereomeric complexes of chiral ureido-1,1'-binaphthalene derivatives with chiral 1-phenylethanol showed that a derivative bearing only one urea unit makes five times more stable complex with (S)-enantiomer than with (R)-enantiomer of the alcohol. This phenomenon could be used in chiral discrimination processes. The influence of individual parts of the structure on the complexation properties is shown. The probable structure of diastereomeric complexes based on experimental results and computational methods is proposed.
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Affiliation(s)
- Petra Cuřínová
- Institute of Chemical Process Fundamentals of the Czech Academy of Sciences, Prague, Czech Republic
| | - Martin Dračínský
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Prague, Czech Republic
| | - Martin Jakubec
- Institute of Chemical Process Fundamentals of the Czech Academy of Sciences, Prague, Czech Republic
| | - Martin Tlustý
- Department of Organic Chemistry, University of Chemistry and Technology, Prague, Czech Republic
| | - Kristýna Janků
- Department of Organic Chemistry, University of Chemistry and Technology, Prague, Czech Republic
| | - Pavel Izák
- Institute of Chemical Process Fundamentals of the Czech Academy of Sciences, Prague, Czech Republic
| | - Roman Holakovský
- Department of Organic Chemistry, University of Chemistry and Technology, Prague, Czech Republic
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38
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Russo M, Lo Meo P. Binding abilities of a chiral calix[4]resorcinarene: a polarimetric investigation on a complex case of study. Beilstein J Org Chem 2018; 13:2698-2709. [PMID: 29564007 PMCID: PMC5753176 DOI: 10.3762/bjoc.13.268] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2017] [Accepted: 11/30/2017] [Indexed: 11/23/2022] Open
Abstract
Polarimetry was used to investigate the binding abilities of a chiral calix[4]resorcinarene derivative, bearing L-proline subunits, towards a set of suitably selected organic guests. The simultaneous formation of 1:1 and 2:1 host–guest inclusion complexes was observed in several cases, depending on both the charge status of the host and the structure of the guest. Thus, the use of the polarimetric method was thoroughly revisited, in order to keep into account the occurrence of multiple equilibria. Our data indicate that the stability of the host–guest complexes is affected by an interplay between Coulomb interactions, π–π interactions, desolvation effects and entropy-unfavorable conformational dynamic restraints. Polarimetry is confirmed as a very useful and versatile tool for the investigation of supramolecular interactions with chiral hosts, even in complex systems involving multiple equilibria.
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Affiliation(s)
- Marco Russo
- Dipartimento di Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche (STEBICEF), University of Palermo, V.le delle Scienze ed. 17, 90128 Palermo, Italy
| | - Paolo Lo Meo
- Dipartimento di Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche (STEBICEF), University of Palermo, V.le delle Scienze ed. 17, 90128 Palermo, Italy.,ATeNCenter, University of Palermo, V.le delle Scienze ed. 18, 90128 Palermo, Italy
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39
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Karpus A, Yesypenko O, Boiko V, Daran JC, Voitenko Z, Kalchenko V, Manoury E. Synthesis of an Enantiomerically Pure Inherently Chiral Calix[4]Arene Phosphonic Acid and Its Evaluation as an Organocatalyst. J Org Chem 2018; 83:1146-1153. [DOI: 10.1021/acs.joc.7b02312] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Andrii Karpus
- Université Toulouse III—Paul Sabatier, 118 route de Narbonne, 31062 Toulouse Cedex 9, France
- Laboratoire de Chimie de Coordination du CNRS, 205 route de Narbonne, 31077 Toulouse Cedex 4, France
- Taras Shevchenko National University of Kyiv, 64/13 Volodymyrska Street, 01033 Kyiv, Ukraine
| | - Oleksandr Yesypenko
- Institute of Organic Chemistry NAS of Ukraine, Murmanska Street 5, 02660 Kyiv, Ukraine
| | - Vyacheslav Boiko
- Institute of Organic Chemistry NAS of Ukraine, Murmanska Street 5, 02660 Kyiv, Ukraine
| | - Jean-Claude Daran
- Université Toulouse III—Paul Sabatier, 118 route de Narbonne, 31062 Toulouse Cedex 9, France
- Laboratoire de Chimie de Coordination du CNRS, 205 route de Narbonne, 31077 Toulouse Cedex 4, France
| | - Zoia Voitenko
- Taras Shevchenko National University of Kyiv, 64/13 Volodymyrska Street, 01033 Kyiv, Ukraine
| | - Vitaly Kalchenko
- Institute of Organic Chemistry NAS of Ukraine, Murmanska Street 5, 02660 Kyiv, Ukraine
| | - Eric Manoury
- Université Toulouse III—Paul Sabatier, 118 route de Narbonne, 31062 Toulouse Cedex 9, France
- Laboratoire de Chimie de Coordination du CNRS, 205 route de Narbonne, 31077 Toulouse Cedex 4, France
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40
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Ede JA, Cragg PJ, Sambrook MR. Comparison of Binding Affinities of Water-Soluble Calixarenes with the Organophosphorus Nerve Agent Soman (GD) and Commonly-Used Nerve Agent Simulants. Molecules 2018; 23:molecules23010207. [PMID: 29351252 PMCID: PMC6017458 DOI: 10.3390/molecules23010207] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Revised: 01/09/2018] [Accepted: 01/14/2018] [Indexed: 11/16/2022] Open
Abstract
The formation of inclusion complexes of the water-soluble p-sulfonatocalix[n]arenes, where n = 4 or 6, with the Chemical Warfare Agent (CWA) GD, or Soman, and commonly used dialkyl methylphosphonate simulants has been studied by experimental solution NMR methods and by Molecular Mechanics (MMFF) and semi-empirical (PM6) calculations. Complex formation in non-buffered and buffered solutions is driven by the hydrophobic effect, and complex stoichiometry determined as 1:1 for all host:guest pairs. Low affinity complexes (Kassoc < 100 M−1) are observed for all guests, attributed to poor host–guest complementarity and the role of buffer cation species accounts for the low affinity of the complexes. Comparison of CWA and simulant behavior adds to understanding of CWA–simulant correlations and the challenges of simulant selection.
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Affiliation(s)
- Jayne A Ede
- CBR Division, Dstl, Porton Down, Salisbury, Wiltshire SP4 0JQ, UK.
| | - Peter J Cragg
- School of Pharmacy and Biomolecular Sciences, University of Brighton, Brighton BN2 4GJ, UK.
| | - Mark R Sambrook
- CBR Division, Dstl, Porton Down, Salisbury, Wiltshire SP4 0JQ, UK.
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41
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Arnott GE. Inherently Chiral Calixarenes: Synthesis and Applications. Chemistry 2017; 24:1744-1754. [DOI: 10.1002/chem.201703367] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Indexed: 11/12/2022]
Affiliation(s)
- Gareth E. Arnott
- Department of Chemistry and Polymer Science; Stellenbosch University; Private Bag X1 Matieland South Africa
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42
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Synthesis of new chiral fluorescent sensors and their applications in enantioselective discrimination. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.06.025] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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43
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Akther T, Islam MM, Matsumoto T, Tanaka J, Thuéry P, Redshaw C, Yamato T. Synthesis and Structure of 1,2-Dimethylene[2.10]metacyclophane and Its Conversion into Chiral [10]Benzenometacyclophanes. European J Org Chem 2017. [DOI: 10.1002/ejoc.201601647] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Thamina Akther
- Department of Applied Chemistry; Faculty of Science and Engineering; Saga University; Honjo-machi 1, Saga 840-8502 Japan
| | - Md. Monarul Islam
- Department of Applied Chemistry; Faculty of Science and Engineering; Saga University; Honjo-machi 1, Saga 840-8502 Japan
- Chemical Research Division; Bangladesh Council of Scientific and Industrial Research (BCSIR); Dhanmondi -1205 Dhaka Bangladesh
| | - Taisuke Matsumoto
- Institute of Materials Chemistry and Engineering; Kyushu University; 6-1, Kasugakoen 816-8580 Kasuga Japan
| | - Junji Tanaka
- Institute of Materials Chemistry and Engineering; Kyushu University; 6-1, Kasugakoen 816-8580 Kasuga Japan
| | - Pierre Thuéry
- NIMBE; CEA; CNRS; Université Paris-Saclay; 91191 Gif-sur-Yvette France
| | - Carl Redshaw
- School of Mathematics and Physical Sciences; The University of Hull; Cottingham Road, Hull HU6 7RX Yorkshire UK
| | - Takehiko Yamato
- Department of Applied Chemistry; Faculty of Science and Engineering; Saga University; Honjo-machi 1, Saga 840-8502 Japan
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44
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Xu WQ, Liu WS, Yan JX, Ma SK, Guo J, Liu JM, Wang RL, Li SY. An Approach to Optically Pure Bridging Chiral p-tert-Butylcalix[4]arenes through a Homologous Anionic Ortho-Fries Rearrangement. J Org Chem 2016; 81:10683-10687. [DOI: 10.1021/acs.joc.6b01682] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Wen-Qiang Xu
- Tianjin
Key Laboratory on Technologies Enabling Development of Clinical Therapeutics
and Diagnostics (Theranostics), School of Pharmacy, Tianjin Medical University, 300070 Tianjin, People’s Republic of China
| | - Wen-Shan Liu
- Tianjin
Key Laboratory on Technologies Enabling Development of Clinical Therapeutics
and Diagnostics (Theranostics), School of Pharmacy, Tianjin Medical University, 300070 Tianjin, People’s Republic of China
| | - Jiu-Xing Yan
- Tianjin
Key Laboratory on Technologies Enabling Development of Clinical Therapeutics
and Diagnostics (Theranostics), School of Pharmacy, Tianjin Medical University, 300070 Tianjin, People’s Republic of China
| | - Shi-Kun Ma
- Tianjin
Key Laboratory on Technologies Enabling Development of Clinical Therapeutics
and Diagnostics (Theranostics), School of Pharmacy, Tianjin Medical University, 300070 Tianjin, People’s Republic of China
| | - Jing Guo
- School
of Materials Science and Engineering, Sun Yat-Sen University, 510275 Guangzhou, People’s Republic of China
| | - Jun-Min Liu
- School
of Materials Science and Engineering, Sun Yat-Sen University, 510275 Guangzhou, People’s Republic of China
| | - Run-Ling Wang
- Tianjin
Key Laboratory on Technologies Enabling Development of Clinical Therapeutics
and Diagnostics (Theranostics), School of Pharmacy, Tianjin Medical University, 300070 Tianjin, People’s Republic of China
| | - Shao-Yong Li
- Tianjin
Key Laboratory on Technologies Enabling Development of Clinical Therapeutics
and Diagnostics (Theranostics), School of Pharmacy, Tianjin Medical University, 300070 Tianjin, People’s Republic of China
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45
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Liu Y, Singharoy A, Mayne CG, Sengupta A, Raghavachari K, Schulten K, Flood AH. Flexibility Coexists with Shape-Persistence in Cyanostar Macrocycles. J Am Chem Soc 2016; 138:4843-4851. [PMID: 27014837 PMCID: PMC4957974 DOI: 10.1021/jacs.6b00712] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Shape-persistent macrocycles are attractive functional targets for synthesis, molecular recognition, and hierarchical self-assembly. Such macrocycles are noncollapsible and geometrically well-defined, and they are traditionally characterized by having repeat units and low conformational flexibility. Here, we find it necessary to refine these ideas in the face of highly flexible yet shape-persistent macrocycles. A molecule is shape-persistent if it has a small change in shape when perturbed by external stimuli (e.g., heat, light, and redox chemistry). In support of this idea, we provide the first examination of the relationships between a macrocycle's shape persistence, its conformational space, and the resulting functions. We do this with a star-shaped macrocycle called cyanostar that is flexible as well as being shape-persistent. We employed molecular dynamics (MD), density functional theory (DFT), and NMR experiments. Considering a thermal bath as a stimulus, we found a single macrocycle has 332 accessible conformers with olefins undergoing rapid interconversion by up-down and in-out motions on short time scales (0.2 ns). These many interconverting conformations classify single cyanostars as flexible. To determine and confirm that cyanostars are shape-persistent, we show that they have a high 87% shape similarity across these conformations. To further test the idea, we use the binding of diglyme to the single macrocycle as guest-induced stimulation. This guest has almost no effect on the conformational space. However, formation of a 2:1 sandwich complex involving two macrocycles enhances rigidity and dramatically shifts the conformer distribution toward perfect bowls. Overall, the present study expands the scope of shape-persistent macrocycles to include flexible macrocycles if, and only if, their conformers have similar shapes.
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Affiliation(s)
- Yun Liu
- Department of Chemistry, Indiana University, 800 E. Kirkwood Avenue, Bloomington, IN 47405, USA
| | - Abhishek Singharoy
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, 405 North Mathews Avenue, Urbana, IL 61801, USA
| | - Christopher G. Mayne
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, 405 North Mathews Avenue, Urbana, IL 61801, USA
| | - Arkajyoti Sengupta
- Department of Chemistry, Indiana University, 800 E. Kirkwood Avenue, Bloomington, IN 47405, USA
| | - Krishnan Raghavachari
- Department of Chemistry, Indiana University, 800 E. Kirkwood Avenue, Bloomington, IN 47405, USA
| | - Klaus Schulten
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, 405 North Mathews Avenue, Urbana, IL 61801, USA
- Department of Physics, University of Illinois at Urbana-Champaign, 1110 West Green Street, Urbana, IL 61801, USA
| | - Amar H. Flood
- Department of Chemistry, Indiana University, 800 E. Kirkwood Avenue, Bloomington, IN 47405, USA
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46
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Genc HN, Sirit A. Novel efficient bifunctional calixarene thiourea organocatalysts: synthesis and application in the direct enantioselective aldol reactions. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.tetasy.2016.01.011] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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47
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An FJ, Xu WQ, Zheng S, Ma SK, Li SY, Wang RL, Liu JM. Bridging Chiral Calix[4]arenes: Description, Optical Resolution, and Absolute Configuration Determination. European J Org Chem 2016. [DOI: 10.1002/ejoc.201501467] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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48
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Diastereoselective reaction of 1,3-dihydroxy calixarene with acylisocyanates: new and easy approach for preparing inherently chiral calyx[4]arenes. Struct Chem 2016. [DOI: 10.1007/s11224-015-0706-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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49
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Vural U, Durmaz M, Sirit A. A novel calix[4]arene-based bifunctional squaramide organocatalyst for enantioselective Michael addition of acetylacetone to nitroolefins. Org Chem Front 2016. [DOI: 10.1039/c6qo00135a] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
A new chiral calix[4]arene-based organocatalyst 3 bearing bis-squaramide moieties was designed and synthesized from p-tert-butylcalix[4]arene. This bifunctional organocatalyst was used in the enantioselective conjugate addition of acetyl acetone to β-nitrostyrenes. The corresponding adducts were obtained in good to excellent yields with high enantioselectivities.
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Affiliation(s)
- Ummu Vural
- Department of Chemistry
- Ahmet Kelesoglu Education Faculty
- Necmettin Erbakan University
- 42090 Konya
- Turkey
| | - Mustafa Durmaz
- Department of Chemistry
- Ahmet Kelesoglu Education Faculty
- Necmettin Erbakan University
- 42090 Konya
- Turkey
| | - Abdulkadir Sirit
- Department of Chemistry
- Ahmet Kelesoglu Education Faculty
- Necmettin Erbakan University
- 42090 Konya
- Turkey
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50
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Slavík P, Kohout M, Böhm S, Eigner V, Lhoták P. Synthesis of inherently chiral calixarenes via direct mercuration of the partial cone conformation. Chem Commun (Camb) 2016; 52:2366-9. [DOI: 10.1039/c5cc09388k] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Regioselective mercuration of calix[4]arene in the partial cone conformation enabled a straightforward access to a novel type of inherently chiral calixarenes with a highly distorted cavity.
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Affiliation(s)
- Petr Slavík
- Department of Organic Chemistry
- University of Chemistry and Technology Prague (UCTP)
- Prague 6
- Czech Republic
| | - Michal Kohout
- Department of Organic Chemistry
- University of Chemistry and Technology Prague (UCTP)
- Prague 6
- Czech Republic
| | - Stanislav Böhm
- Department of Organic Chemistry
- University of Chemistry and Technology Prague (UCTP)
- Prague 6
- Czech Republic
| | - Václav Eigner
- Institute of Physics AS CR
- 182 21 Prague 8
- Czech Republic
| | - Pavel Lhoták
- Department of Organic Chemistry
- University of Chemistry and Technology Prague (UCTP)
- Prague 6
- Czech Republic
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