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Mamleev K, Eigner V, Dvořáková H, Lhoták P. The Unexpected Chemistry of Thiacalix[4]arene Monosulfoxide. Molecules 2023; 28:molecules28093914. [PMID: 37175324 PMCID: PMC10179807 DOI: 10.3390/molecules28093914] [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: 03/28/2023] [Revised: 04/27/2023] [Accepted: 05/03/2023] [Indexed: 05/15/2023] Open
Abstract
Thiacalix[4]arene monosulfoxide 4 possesses a very unusual chemistry, as demonstrated by several unprecedented derivatives in calixarene chemistry. Interestingly, compound 4 cannot be prepared by the dealkylation of its corresponding tetramethoxy derivative using BBr3. Instead, the borate complex is formed with a boron bound by the two neighboring phenolic oxygens and a sulfoxide group. A similar type of borate complex with a spirodienone fragment was then isolated as a by-product. The oxidation of monosulfoxide with Chloramine-T did not provide the expected spirodienone moiety, but rather a complex oxathiane-based spiroheterocyclic part containing a chlorine atom. X-ray analyses confirmed the structures of the unusual products and feasible formation mechanisms were proposed. These results provide further evidence of the distinction between thiacalixarene chemistry and the chemistry of classical CH2 analogues.
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Affiliation(s)
- Kamil Mamleev
- Department of Organic Chemistry, University of Chemistry and Technology, Prague (UCTP), Technická 5, 166 28 Prague, Czech Republic
| | - Václav Eigner
- Department of Solid State Chemistry, UCTP, Technická 5, 166 28 Prague, Czech Republic
| | - Hana Dvořáková
- Laboratory of NMR Spectroscopy, UCTP, Technická 5, 166 28 Prague, Czech Republic
| | - Pavel Lhoták
- Department of Organic Chemistry, University of Chemistry and Technology, Prague (UCTP), Technická 5, 166 28 Prague, Czech Republic
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Shalev O, Biali SE. Calixrotanes: Calixarenes Incorporating Spiro-Linked Cyclopropyl Groups. Chemistry 2019; 25:10214-10225. [PMID: 31120569 DOI: 10.1002/chem.201901998] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2019] [Indexed: 11/11/2022]
Abstract
Macrocyclic compounds (calix[4]- and calix[6]arene derivatives) with aryl rings interconnected by spirocyclopropyl groups have been synthesized and structurally characterized. The compounds were prepared by the reaction of dichlorocarbene with calixarenes possessing exocyclic double bonds at the bridges, followed by reductive perdechlorination of the spirocyclopropyl groups. In all systems, pairs of geminal rings connected to the quaternary spiro carbon atoms are oriented anti, and the methylene groups of the cyclopropyl rings are located in isoclinal positions. Calix[6]rotane adopts in the crystal and in solution a 1,3,5-alternate conformation. The presence of the spirocyclopropyl groups increases the rigidity of the macrocyclic ring.
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Affiliation(s)
- Ori Shalev
- Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem, 9190401, Israel
| | - Silvio E Biali
- Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem, 9190401, Israel
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4
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Shalev O, Biali SE. C–Me Bond Formation at All Methylene Bridges of the Calix[4]arene Scaffold. Org Lett 2018; 20:3390-3393. [DOI: 10.1021/acs.orglett.8b01314] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ori Shalev
- Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem 9190401, Israel
| | - Silvio E. Biali
- Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem 9190401, Israel
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Shalev O, Biali SE. The Lithiation/Oxygenation Approach to Calix[6]arenes Selectively Functionalized at a Pair of Opposite Methylene Bridges. Org Lett 2018; 20:2324-2327. [PMID: 29638134 DOI: 10.1021/acs.orglett.8b00671] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Lithiation of the calix[6]arene methyl ether 2 followed by reaction with O2 yields derivatives with two opposite methylene groups hydroxylated. Calix[6]arenes with two opposite bridges functionalized with alkoxy, azido, and m-xylyl groups were prepared via reaction of a dichlorocalix[6]arene derivative with nucleophiles.
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Affiliation(s)
- Ori Shalev
- Institute of Chemistry , The Hebrew University of Jerusalem , Jerusalem 9190401 , Israel
| | - Silvio E Biali
- Institute of Chemistry , The Hebrew University of Jerusalem , Jerusalem 9190401 , Israel
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Chen W, Tao H, Huang W, Wang G, Li S, Cheng X, Li G. Hantzsch Ester as a Photosensitizer for the Visible-Light-Induced Debromination of Vicinal Dibromo Compounds. Chemistry 2016; 22:9546-50. [PMID: 27128783 DOI: 10.1002/chem.201601819] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2016] [Indexed: 11/11/2022]
Abstract
The debromination of vicinal dibromo compounds to generate alkenes usually requires harsh reaction conditions and the addition of catalysts. Just recently the visible-light-induced debromination of vicinal dibromo compounds emerged as a possible alternative to commonly used methods, but the substrate scope of this reaction is limited and a photocatalyst is necessary for the successful conversion of the starting compounds. A catalyst-free visible-light-induced debromination of vicinal dibromo compounds with a base-activated Hantzsch ester as photosensitizer is reported. The method has a wide substrate scope and a broad functional-group compatibility.
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Affiliation(s)
- Wenxin Chen
- Institute of Chemistry and Biomedical Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Xianlin Road, 163, Nanjing, China
| | - Huachen Tao
- Institute of Chemistry and Biomedical Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Xianlin Road, 163, Nanjing, China
| | - Wenhao Huang
- Institute of Chemistry and Biomedical Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Xianlin Road, 163, Nanjing, China
| | - Guoqiang Wang
- Key Laboratory of Mesoscopic Chemistry of Ministry of Education, Institute of Theoretical and Computational Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Hankou Road, 22, Nanjing, China
| | - Shuhua Li
- Key Laboratory of Mesoscopic Chemistry of Ministry of Education, Institute of Theoretical and Computational Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Hankou Road, 22, Nanjing, China.
| | - Xu Cheng
- Institute of Chemistry and Biomedical Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Xianlin Road, 163, Nanjing, China.
| | - Guigen Li
- Institute of Chemistry and Biomedical Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Xianlin Road, 163, Nanjing, China.,Department of Chemistry and Biochemistry, Texas Tech University, Memorial Circle & Boston, TX 79409-1061, Lubbock, United States
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Leader A, Itzhak N, Bogoslavsky B, Biali SE. Calix[6]arene Functionalized at Four Bridges: Conformation and Intramolecular Guest Exchange. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500873] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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8
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Itzhak N, Biali SE. Preparation and Crystal Structure of the1,3-alternateAtropisomer of a Calix[4]radialene. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500319] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Slavík P, Dvořáková H, Eigner V, Lhoták P. Regioselective alkylation of a methylene group via meta-bridging of calix[4]arenes. Chem Commun (Camb) 2014; 50:10112-4. [PMID: 25050988 DOI: 10.1039/c4cc04356a] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The meta-iodo derivative, fixed in the cone conformation, enables the gram-scale preparation of a meta-bridged calix[4]arene. This intermediate, possessing a fluorene moiety within the macrocyclic skeleton, can be regioselectively alkylated on the corresponding methylene bridge to form a unique substitution pattern in classical calixarene chemistry.
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Affiliation(s)
- Petr Slavík
- Department of Organic Chemistry, Institute of Chemical Technology Prague (ICTP), Technicka 5, 166 28, Prague 6, Czech Republic.
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Katzsch F, Münch AS, Mertens FO, Weber E. Copper(II) benzoate dimers coordinated by different linear alcohols – A systematic study of crystal structures. J Mol Struct 2014. [DOI: 10.1016/j.molstruc.2014.01.080] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Poms D, Itzhak N, Kuno L, Biali SE. Calixradialenes: Calixarene Derivatives with Exocyclic Double Bonds. J Org Chem 2013; 79:538-45. [DOI: 10.1021/jo402223x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- David Poms
- Institute
of Chemistry, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
| | - Norbert Itzhak
- Institute
of Chemistry, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
| | - Lev Kuno
- Institute
of Chemistry, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
| | - Silvio E. Biali
- Institute
of Chemistry, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
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