1
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Ivanov KS, Samburskiy DE, Zargarova LV, Komarov VY, Mostovich EA. Construction of Annulated Spiro[4.4]-nonane-diones via the Tandem [4 + 2]-Cycloaddition/Aromatization Reaction. J Org Chem 2023; 88:11003-11009. [PMID: 37462945 DOI: 10.1021/acs.joc.3c00981] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/05/2023]
Abstract
A method for the synthesis of both symmetric and asymmetric fused spiro[4.4]-nonane-dione derivatives has been developed. It is based on a Diels-Alder reaction of spiro[4.4]nona-2,7-diene-1,6-dione as a dienophile component followed by immediate aromatization of the adduct. An active diene component can be generated using the tetrabromoxylene/NaI system, the 1,3-diphenylisobenzofuran/BF3 system, or substituted cyclones.
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Affiliation(s)
- Konstantin S Ivanov
- Laboratory of Low-carbon Chemical Technologies, ORËL Research Lab, Novosibirsk State University, Novosibirsk 630090, Russia
| | - Denis E Samburskiy
- Laboratory of Low-carbon Chemical Technologies, ORËL Research Lab, Novosibirsk State University, Novosibirsk 630090, Russia
| | - Leila V Zargarova
- Laboratory of Low-carbon Chemical Technologies, ORËL Research Lab, Novosibirsk State University, Novosibirsk 630090, Russia
- Nikolaev Institute of Inorganic Chemistry SB RAS, Novosibirsk 630090, Russia
| | | | - Evgeny A Mostovich
- Laboratory of Low-carbon Chemical Technologies, ORËL Research Lab, Novosibirsk State University, Novosibirsk 630090, Russia
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2
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Park KHK, Frank N, Duarte F, Anderson EA. Collective Synthesis of Illudalane Sesquiterpenes via Cascade Inverse Electron Demand (4 + 2) Cycloadditions of Thiophene S, S-Dioxides. J Am Chem Soc 2022; 144:10017-10024. [PMID: 35609003 PMCID: PMC9185749 DOI: 10.1021/jacs.2c03304] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Thiophene S,S-dioxides are underutilized tools for the de novo construction of benzene rings in organic synthesis. We report a collective synthesis of nine illudalane sesquiterpenes using bicyclic thiophene S,S-dioxides as generalized precursors to the indane core of the natural products. Exploiting furans as unusual dienophiles in this inverse electron demand Diels-Alder cascade, this concise and convergent approach enables the synthesis of these targets in as little as five steps. Theoretical studies rationalize the reactivity of thiophene S,S-dioxides with both electron-poor and electron-rich dienophiles and reveal reaction pathways involving either nonpolar pericyclic or bifurcating ambimodal cycloadditions. Overall, this work demonstrates the wider potential of thiophene S,S-dioxides as convenient and flexible precursors to polysubstituted arenes.
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Affiliation(s)
- Kun Ho Kenny Park
- Chemistry Research Laboratory, 12 Mansfield Road, Oxford OX1 3TA, U.K
| | - Nils Frank
- Chemistry Research Laboratory, 12 Mansfield Road, Oxford OX1 3TA, U.K
| | - Fernanda Duarte
- Chemistry Research Laboratory, 12 Mansfield Road, Oxford OX1 3TA, U.K
| | - Edward A Anderson
- Chemistry Research Laboratory, 12 Mansfield Road, Oxford OX1 3TA, U.K
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3
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Liu H, He GC, Zhao CY, Zhang XX, Ji DW, Hu YC, Chen QA. Redox-Divergent Construction of (Dihydro)thiophenes with DMSO. Angew Chem Int Ed Engl 2021; 60:24284-24291. [PMID: 34460141 DOI: 10.1002/anie.202109026] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Indexed: 11/10/2022]
Abstract
Thiophene-based rings are one of the most widely used building blocks for the synthesis of sulfur-containing molecules. Inspired by the redox diversity of these features in nature, we demonstrate herein a redox-divergent construction of dihydrothiophenes, thiophenes, and bromothiophenes from the respective readily available allylic alcohols, dimethyl sulfoxide (DMSO), and HBr. The redox-divergent selectivity could be manipulated mainly by controlling the dosage of DMSO and HBr. Mechanistic studies suggest that DMSO simultaneously acts as an oxidant and a sulfur donor. The synthetic potentials of the products as platform molecules were also demonstrated by various derivatizations, including the preparation of bioactive and functional molecules.
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Affiliation(s)
- Heng Liu
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Gu-Cheng He
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Chao-Yang Zhao
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xiang-Xin Zhang
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Ding-Wei Ji
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, China
| | - Yan-Cheng Hu
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, China
| | - Qing-An Chen
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
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4
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Redox‐Divergent Construction of (Dihydro)thiophenes with DMSO. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202109026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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5
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Chari JV, Spence KA, Susick RB, Garg NK. A platform for on-the-complex annulation reactions with transient aryne intermediates. Nat Commun 2021; 12:3706. [PMID: 34140488 PMCID: PMC8211856 DOI: 10.1038/s41467-021-23970-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Accepted: 05/25/2021] [Indexed: 11/09/2022] Open
Abstract
Organometallic complexes are ubiquitous in chemistry and biology. Whereas their preparation has historically relied on ligand synthesis followed by coordination to metal centers, the ability to efficiently diversify their structures remains a synthetic challenge. A promising yet underdeveloped strategy involves the direct manipulation of ligands that are already bound to a metal center, also known as chemistry-on-the-complex. Herein, we introduce a versatile platform for on-the-complex annulation reactions using transient aryne intermediates. In one variant, organometallic complexes undergo transition metal-catalyzed annulations with in situ generated arynes to form up to six new carbon-carbon bonds. In the other variant, an organometallic complex bearing a free aryne is generated and intercepted in cycloaddition reactions to access unique scaffolds. Our studies, centered around privileged polypyridyl metal complexes, provide an effective strategy to annulate organometallic complexes and access complex metal-ligand scaffolds, while furthering the synthetic utility of strained intermediates in chemical synthesis.
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Affiliation(s)
- Jason V Chari
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA, USA
| | - Katie A Spence
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA, USA
| | - Robert B Susick
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA, USA
| | - Neil K Garg
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA, USA.
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6
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Large B, Prim D. Unraveling the C−H Arylation of Benzo‐Fused Cycloalkanones: Combined Experimental and Computational Evidence. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202001349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Benjamin Large
- Université Paris-Saclay UVSQ CNRS Institut Lavoisier de Versailles 78035 Versailles France
| | - Damien Prim
- Université Paris-Saclay UVSQ CNRS Institut Lavoisier de Versailles 78035 Versailles France
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7
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Affiliation(s)
- Jiarong Shi
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Chongqing, P. R. China, 400030
| | - Lianggui Li
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Chongqing, P. R. China, 400030
| | - Yang Li
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Chongqing, P. R. China, 400030
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8
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Nishiyama Y, Akiyama K, Sakata Y, Hosoya T, Yoshida S. Facile Synthesis of Tetraarylpyrazines by Sequential Cross-coupling Approach. CHEM LETT 2021. [DOI: 10.1246/cl.200715] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Yoshitake Nishiyama
- Laboratory of Chemical Bioscience, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University (TMDU), 2-3-10 Kanda-Surugadai, Chiyoda-ku, Tokyo 101-0062, Japan
| | - Kei Akiyama
- Laboratory of Chemical Bioscience, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University (TMDU), 2-3-10 Kanda-Surugadai, Chiyoda-ku, Tokyo 101-0062, Japan
| | - Yuki Sakata
- Laboratory of Chemical Bioscience, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University (TMDU), 2-3-10 Kanda-Surugadai, Chiyoda-ku, Tokyo 101-0062, Japan
| | - Takamitsu Hosoya
- Laboratory of Chemical Bioscience, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University (TMDU), 2-3-10 Kanda-Surugadai, Chiyoda-ku, Tokyo 101-0062, Japan
| | - Suguru Yoshida
- Laboratory of Chemical Bioscience, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University (TMDU), 2-3-10 Kanda-Surugadai, Chiyoda-ku, Tokyo 101-0062, Japan
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9
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Asako T, Suzuki S, Tanaka S, Ota E, Yamaguchi J. Synthesis of Decaarylanthracene with Nine Different Substituents. J Org Chem 2020; 85:15437-15448. [PMID: 33201696 DOI: 10.1021/acs.joc.0c02218] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A synthesis of decaarylanthracene with nine different substituents has been accomplished by a coupling/ring-transformation strategy. The oxidation of tetraarylthiophenes with four different substituents to the corresponding thiophene S-oxides and a [4 + 2] cycloaddition with a double benzyne precursor afforded a multiply arylated naphthalene derivative. Subsequently, the naphthalene derivative was converted into a naphthalyne, and then a [4 + 2] cycloaddition of another thiophene S-oxide provided decaarylanthracenes with nine different aryl groups.
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Affiliation(s)
- Takashi Asako
- Department of Applied Chemistry, Waseda University, 513 Wasedatsurumakicho, Shinjuku, Tokyo 162-0041, Japan
| | - Shin Suzuki
- Department of Applied Chemistry, Waseda University, 513 Wasedatsurumakicho, Shinjuku, Tokyo 162-0041, Japan
| | - Shuhei Tanaka
- Department of Applied Chemistry, Waseda University, 513 Wasedatsurumakicho, Shinjuku, Tokyo 162-0041, Japan
| | - Eisuke Ota
- Department of Applied Chemistry, Waseda University, 513 Wasedatsurumakicho, Shinjuku, Tokyo 162-0041, Japan
| | - Junichiro Yamaguchi
- Department of Applied Chemistry, Waseda University, 513 Wasedatsurumakicho, Shinjuku, Tokyo 162-0041, Japan
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10
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Nisa K, Khatri V, Kumar S, Arora S, Ahmad S, Dandia A, Thirumal M, Kashyap HK, Chauhan SMS. Synthesis and Redox Properties of Superbenzene Porphyrin Conjugates. Inorg Chem 2020; 59:16168-16177. [PMID: 33103424 DOI: 10.1021/acs.inorgchem.0c01682] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Superbenzene porphyrin conjugates find wide range of applications from nonlinear optical materials to semiconductors. Herein, we report the synthesis and characterization of 5,15-bis(3,5-di-tert-butylphenyl)-10,20-bis(pentaphenylphenyl)phenylporphyrin and its Zinc-metallated complex. Oxidative planarization of 5,15-bis(3,5-di-tert-butylphenyl)-10,20-bis(pentaphenylphenyl)phenylporphyrin and its metallated complex was carried out by using NOBF4 as an oxidizing agent. The formation of superbenzene porphyrin conjugates validates its Scholl type reactions. The laboratory-synthesized porphyrin conjugates were characterized experimentally using spectroscopic techniques such as 1H NMR, 13C NMR, electron spin resonance, and ultraviolet-visible spectroscopy for structural conformation. In addition, density functional theory calculations were carried out to validate the experimental results. The theoretical and experimental results show that the 4-(pentaphenylphenyl)phenyl ligand increases the stability, optical properties, and rate of planarization of synthesized porphyrins. The conjugates exhibited intense and distant electronic communication between two hexabenzocoronene sites, taking advantage of porphyrin as a π-spacer. The π-radical cation has also been found to be an intermediate in oxidative C-C bond formation. NICS calculations support such a conclusion.
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Affiliation(s)
- Kharu Nisa
- Department of Chemistry, University of Delhi, New Delhi 110007, India
| | - Vikas Khatri
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Sharvan Kumar
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Smriti Arora
- Department of Chemistry, University of Delhi, New Delhi 110007, India
| | - Sohail Ahmad
- Department of Chemistry, University of Delhi, New Delhi 110007, India
| | - Anshu Dandia
- Department of Chemistry, University of Delhi, New Delhi 110007, India
| | - M Thirumal
- Department of Chemistry, University of Delhi, New Delhi 110007, India
| | - Hemant K Kashyap
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Shive M S Chauhan
- Department of Chemistry, University of Delhi, New Delhi 110007, India
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11
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Tanaka S, Asako T, Ota E, Yamaguchi J. Synthesis of a Pentaarylcarbazole: Installation of Different Aryl Groups on a Benzenoid Moiety. CHEM LETT 2020. [DOI: 10.1246/cl.200302] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Shuhei Tanaka
- Department of Applied Chemistry, Waseda University, 3-4-1 Ohkubo, Shinjuku, Tokyo 169-8555, Japan
| | - Takashi Asako
- Department of Applied Chemistry, Waseda University, 3-4-1 Ohkubo, Shinjuku, Tokyo 169-8555, Japan
| | - Eisuke Ota
- Department of Applied Chemistry, Waseda University, 3-4-1 Ohkubo, Shinjuku, Tokyo 169-8555, Japan
| | - Junichiro Yamaguchi
- Department of Applied Chemistry, Waseda University, 3-4-1 Ohkubo, Shinjuku, Tokyo 169-8555, Japan
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12
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Jin H, Fürstner A. Modular Synthesis of Furans with up to Four Different Substituents by a trans-Carboboration Strategy. Angew Chem Int Ed Engl 2020; 59:13618-13622. [PMID: 32374441 PMCID: PMC7496670 DOI: 10.1002/anie.202005560] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Indexed: 01/18/2023]
Abstract
Propargyl alcohols, on treatment with MHMDS (M=Na, K), B2 (pin)2 , an acid chloride and a palladium/copper co-catalyst system, undergo a reaction cascade comprised of trans-diboration, regioselective acylation, cyclization and dehydration to give trisubstituted furylboronic acid pinacol ester derivatives in good yields; subsequent Suzuki coupling allows a fourth substituent of choice to be introduced and hence tetrasubstituted (arylated) furans to be formed. In terms of modularity, the method seems unrivaled, not least because each product can be attained by two orthogonal but convergent ways ("diagonal split"). This asset is illustrated by the "serial" formation of a "library" of all twelve possible furan isomers that result from systematic permutation of four different substituents about the heterocyclic core.
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Affiliation(s)
- Hongming Jin
- Max-Planck-Institut für Kohlenforschung, 45470, Mülheim/Ruhr, Germany
| | - Alois Fürstner
- Max-Planck-Institut für Kohlenforschung, 45470, Mülheim/Ruhr, Germany
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13
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Jin H, Fürstner A. Modular Synthesis of Furans with up to Four Different Substituents by a
trans
‐Carboboration Strategy. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202005560] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Hongming Jin
- Max-Planck-Institut für Kohlenforschung 45470 Mülheim/Ruhr Germany
| | - Alois Fürstner
- Max-Planck-Institut für Kohlenforschung 45470 Mülheim/Ruhr Germany
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14
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Pozo I, Peña D, Guitián E, Pérez D. 2,6,10-Triphenylenotriyne: a star-shaped trisaryne. Chem Commun (Camb) 2020; 56:12853-12856. [DOI: 10.1039/d0cc05686c] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
The synthesis and reactivity of an efficient precursor of a triphenylene-based trisaryne synthon is reported for the first time.
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Affiliation(s)
- Iago Pozo
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS) and Departamento de Química Orgánica. Universidade de Santiago de Compostela
- 15782-Santiago de Compostela
- Spain
| | - Diego Peña
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS) and Departamento de Química Orgánica. Universidade de Santiago de Compostela
- 15782-Santiago de Compostela
- Spain
| | - Enrique Guitián
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS) and Departamento de Química Orgánica. Universidade de Santiago de Compostela
- 15782-Santiago de Compostela
- Spain
| | - Dolores Pérez
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS) and Departamento de Química Orgánica. Universidade de Santiago de Compostela
- 15782-Santiago de Compostela
- Spain
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15
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Li TY, Lin YC, Song YH, Lu HF, Chao I, Lin CH. Synthesis and Physical Study of Perylene and Anthracene Polynitrile as Electron Acceptors. Org Lett 2019; 21:5397-5401. [PMID: 31294569 DOI: 10.1021/acs.orglett.9b01454] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Attaching electron-withdrawing nitrile groups to π-conjugated systems is an effective approach toward electron acceptors. By combining various cyanation methodologies, perylene and anthracene polynitriles with up to eight nitrile substituents on one aromatic scaffold were synthesized. This strategy produces stable electron acceptors with lowest unoccupied molecular orbital (LUMO) levels comparable to benchmark acceptors. A very stable octanitrile anion was also produced serendipitously. Reactivity patterns of these acceptors were rationalized by density functional theory (DFT) calculation.
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Affiliation(s)
- Ting-Yu Li
- Institute of Chemistry , Academia Sinica , Academia Road, Sec. 2, No. 128 , Taipei , Taiwan , Republic of China
| | - Yi-Chun Lin
- Institute of Chemistry , Academia Sinica , Academia Road, Sec. 2, No. 128 , Taipei , Taiwan , Republic of China
| | - Yu-Huei Song
- Institute of Chemistry , Academia Sinica , Academia Road, Sec. 2, No. 128 , Taipei , Taiwan , Republic of China
| | - Hsiu-Feng Lu
- Institute of Chemistry , Academia Sinica , Academia Road, Sec. 2, No. 128 , Taipei , Taiwan , Republic of China
| | - Ito Chao
- Institute of Chemistry , Academia Sinica , Academia Road, Sec. 2, No. 128 , Taipei , Taiwan , Republic of China
| | - Chih-Hsiu Lin
- Institute of Chemistry , Academia Sinica , Academia Road, Sec. 2, No. 128 , Taipei , Taiwan , Republic of China
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16
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Verlinden S, Woller T, De Proft F, Verniest G, Alonso M. Towards the Design of Optically Active Thiophene S-Oxides using Quantum Chemistry. Chemistry 2019; 25:2840-2851. [PMID: 30600854 DOI: 10.1002/chem.201805726] [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: 11/16/2018] [Indexed: 01/03/2023]
Abstract
The importance of axially chiral biaryls has risen steeply in the recent decades. This structural motif proved to be successful in catalytic asymmetric synthesis and the configuration of the biaryl axis is decisive for the biological activity. A new approach for the atroposelective synthesis of biaryls would be through a cycloaddition between an enantiopure phenyl-substituted thiophene S-oxide and an alkyne. Importantly, the chiral center of the thiophene S-oxide needs to be stable enough to avoid pyramidal inversion during the cycloaddition. Considering that the racemization of thiophene monoxides has been scarcely investigated so far, we perform a thorough quantum chemical study on the inversion barriers of a large number of chiral thiophene S-oxide derivatives. Our main goal is to identify substitution patterns leading to stable atropisomers at room temperature. Appealingly, the role of stereoelectronic effects and the position of the substituents as well as the importance of aromaticity on the pyramidal inversion barrier are elucidated for the first time.
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Affiliation(s)
- Steven Verlinden
- Research Group of Organic Chemistry (ORGC), Department of Chemistry, Faculty of Science and Bio-Engineering Sciences, Vrije Universiteit Brussel (VUB), Pleinlaan 2, 1050, Brussels, Belgium
| | - Tatiana Woller
- Department of General Chemistry (ALGC), Faculty of Science and Bio-Engineering Sciences, Vrije Universiteit Brussel (VUB), Pleinlaan 2, 1050, Brussels, Belgium
| | - Frank De Proft
- Department of General Chemistry (ALGC), Faculty of Science and Bio-Engineering Sciences, Vrije Universiteit Brussel (VUB), Pleinlaan 2, 1050, Brussels, Belgium
| | - Guido Verniest
- Research Group of Organic Chemistry (ORGC), Department of Chemistry, Faculty of Science and Bio-Engineering Sciences, Vrije Universiteit Brussel (VUB), Pleinlaan 2, 1050, Brussels, Belgium
| | - Mercedes Alonso
- Department of General Chemistry (ALGC), Faculty of Science and Bio-Engineering Sciences, Vrije Universiteit Brussel (VUB), Pleinlaan 2, 1050, Brussels, Belgium
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17
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Bedi A, Gidron O. Chiroptical Properties of Twisted Acenes: Experimental and Computational Study. Chemistry 2019; 25:3279-3285. [PMID: 30614087 DOI: 10.1002/chem.201805728] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Indexed: 01/29/2023]
Abstract
Acenes that are twisted out of planarity are expected to display chiroptical properties. However, the effect of twisting on the chiroptical properties of acenes has not been investigated computationally or experimentally. Herein, we present a computational investigation of the chiroptical properties of anthracenes to pentacenes, combined with an experimental study using a series of helically locked acenes, twisted to different torsional angles in their enantiopure form. The lowest energy transition, which is relatively weak in acenes, becomes dominant in their circular dichroism spectra upon twisting. We find that the rotational strength of acenes consistently increases with increasing twist. The experimental data obtained from enantiopure tethered twistacenes show the same trend as the calculated result, with a strong Cotton effect and anisotropy factor, rendering twisted acenes as excellent chiroptical materials.
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Affiliation(s)
- Anjan Bedi
- Institute of Chemistry, The Hebrew University of Jerusalem, Edmond J. Safra Campus, Jerusalem, Israel
| | - Ori Gidron
- Institute of Chemistry, The Hebrew University of Jerusalem, Edmond J. Safra Campus, Jerusalem, Israel
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18
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Large B, Gigant N, Joseph D, Clavier G, Prim D. Site-Selective Arylation of Naphthalenes: a Key Entry towards Extended Fluorenones and Phenanthridinones. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900067] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Benjamin Large
- ILV; UVSQ; CNRS; Université Paris-Saclay; 78035 Versailles France
| | - Nicolas Gigant
- BioCIS; Université Paris-Sud, CNRS; Université Paris-Saclay; 92296 Châtenay-Malabry France
| | - Delphine Joseph
- BioCIS; Université Paris-Sud, CNRS; Université Paris-Saclay; 92296 Châtenay-Malabry France
| | - Gilles Clavier
- PPSM; CNRS; ENS Paris-Saclay; Université Paris-Saclay; 94235 Cachan France
| | - Damien Prim
- ILV; UVSQ; CNRS; Université Paris-Saclay; 78035 Versailles France
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19
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Martin MM, Dill M, Langer J, Jux N. Porphyrin-Hexaphenylbenzene Conjugates via Mixed Cyclotrimerization Reactions. J Org Chem 2019; 84:1489-1499. [PMID: 30596243 DOI: 10.1021/acs.joc.8b02907] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Mixed cyclotrimerization reactions of diarylacetylenes (tolans) were applied to generate a library of multiple porphyrin-hexaphenylbenzene (HPB) architectures. Successful reactions, which could be influenced by the ratio of tolan starting materials, were conducted using dicobaltoctacarbonyl as a catalyst. Separation of the reaction products was performed by chromatographic and crystallization techniques. The physical properties were investigated with respect to the number of porphyrins per HPB and their substitution pattern.
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Affiliation(s)
- Max M Martin
- Department Chemie und Pharmazie & Interdisciplinary Center for Molecular Materials (ICMM) , Friedrich-Alexander-Universität Erlangen-Nürnberg , Nikolaus-Fiebiger-Strasse 10 , 91058 Erlangen , Germany
| | - Maximilian Dill
- Department Chemie und Pharmazie & Interdisciplinary Center for Molecular Materials (ICMM) , Friedrich-Alexander-Universität Erlangen-Nürnberg , Nikolaus-Fiebiger-Strasse 10 , 91058 Erlangen , Germany
| | - Jens Langer
- Inorganic and Organometallic Chemistry , Egerlandstrasse 1 , 91058 Erlangen , Germany
| | - Norbert Jux
- Department Chemie und Pharmazie & Interdisciplinary Center for Molecular Materials (ICMM) , Friedrich-Alexander-Universität Erlangen-Nürnberg , Nikolaus-Fiebiger-Strasse 10 , 91058 Erlangen , Germany
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20
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Korb M, Lang H. The anionic Fries rearrangement: a convenient route to ortho-functionalized aromatics. Chem Soc Rev 2019; 48:2829-2882. [DOI: 10.1039/c8cs00830b] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
The scope and mechanism of anionic (hetero-) Fries rearrangements are summarized for various migrating groups and arenes, including applications and computational studies.
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Affiliation(s)
- Marcus Korb
- Technische Universität Chemnitz
- Faculty of Natural Sciences
- Institute of Chemistry
- Inorganic Chemistry
- Chemnitz
| | - Heinrich Lang
- Technische Universität Chemnitz
- Faculty of Natural Sciences
- Institute of Chemistry
- Inorganic Chemistry
- Chemnitz
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21
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Asako T, Suzuki S, Itami K, Muto K, Yamaguchi J. Synthesis of a Heptaarylisoquinoline: Unusual Disconnection for Constructing Isoquinoline Frameworks. CHEM LETT 2018. [DOI: 10.1246/cl.180429] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Takashi Asako
- Department of Applied Chemistry, Waseda University, 3-4-1 Ohkubo, Shinjuku, Tokyo 169-8555, Japan
| | - Shin Suzuki
- Graduate School of Science, Nagoya University, Chikusa, Nagoya, Aichi 464-8602, Japan
| | - Kenichiro Itami
- Graduate School of Science, Nagoya University, Chikusa, Nagoya, Aichi 464-8602, Japan
| | - Kei Muto
- Department of Applied Chemistry, Waseda University, 3-4-1 Ohkubo, Shinjuku, Tokyo 169-8555, Japan
| | - Junichiro Yamaguchi
- Department of Applied Chemistry, Waseda University, 3-4-1 Ohkubo, Shinjuku, Tokyo 169-8555, Japan
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22
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Watanabe T, Abe H, Mutoh Y, Saito S. Ruthenium‐Catalyzed Cycloisomerization of 2‐Alkynylstyrenes via 1,2‐Carbon Migration That Leads to Substituted Naphthalenes. Chemistry 2018; 24:11545-11549. [DOI: 10.1002/chem.201802413] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Indexed: 01/01/2023]
Affiliation(s)
- Takuma Watanabe
- Department of Chemistry, Faculty of ScienceTokyo University of Science 1-3 Kagurazaka Shinjuku-ku Tokyo 162-8601 Japan
| | - Haruka Abe
- Department of Chemistry, Faculty of ScienceTokyo University of Science 1-3 Kagurazaka Shinjuku-ku Tokyo 162-8601 Japan
| | - Yuichiro Mutoh
- Department of Chemistry, Faculty of ScienceTokyo University of Science 1-3 Kagurazaka Shinjuku-ku Tokyo 162-8601 Japan
| | - Shinichi Saito
- Department of Chemistry, Faculty of ScienceTokyo University of Science 1-3 Kagurazaka Shinjuku-ku Tokyo 162-8601 Japan
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23
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Li JH, Huang Q, Wang SY, Ji SJ. Trisulfur Radical Anion (S3•–) Involved [1 + 2 + 2] and [1 + 3 + 1] Cycloaddition with Aromatic Alkynes: Synthesis of Tetraphenylthiophene and 2-Benzylidenetetrahydrothiophene Derivatives. Org Lett 2018; 20:4704-4708. [DOI: 10.1021/acs.orglett.8b02066] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jing-Hao Li
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, China
| | - Qi Huang
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, China
| | - Shun-Yi Wang
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, China
| | - Shun-Jun Ji
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, China
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24
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Abstract
Twisting linear acenes out of planarity affects their electronic and optical properties, and induces chirality. However, it is difficult to isolate the effect of twisting from the substituent effect. Moreover, many twistacenes (twisted acenes) readily racemize in solution. Here, we introduce a series of twistacenes having an anthracene backbone diagonally tethered by an n-alkyl bridge, which induces a twist of various angles. This allows us to systematically monitor the effect of twisting on electronic and optical properties. We find that absorption is bathochromically shifted with increasing twist, while fluorescence quantum efficiency drops dramatically. The tethered twistacenes were isolated to their enantiomerically pure form, displaying strong chiroptical properties and anisotropy factor ( g-value). No racemization was observed even upon prolonged heating, rendering these tethered twistacenes suitable as enantiopure helical building units for π-conjugated backbones.
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Affiliation(s)
- Anjan Bedi
- Institute of Chemistry , The Hebrew University of Jerusalem, Edmond J. Safra Campus , Jerusalem 91904 , Israel
| | - Linda J W Shimon
- Chemical Research Support Unit , Weizmann Institute of Science , Rehovot 76100 , Israel
| | - Ori Gidron
- Institute of Chemistry , The Hebrew University of Jerusalem, Edmond J. Safra Campus , Jerusalem 91904 , Israel
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25
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Suzuki S, Asako T, Itami K, Yamaguchi J. Modular synthesis of heptaarylindole. Org Biomol Chem 2018; 16:3771-3776. [DOI: 10.1039/c8ob00993g] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The first synthesis of heptaarylindole (HAI) has been accomplished using a coupling/ring transformation strategy.
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Affiliation(s)
- Shin Suzuki
- Institute of Transformative Bio-Molecules (WPI-ITbM) and Graduate School of Science
- Nagoya University
- Nagoya 464-8602
- Japan
| | - Takashi Asako
- Department of Applied Chemistry
- Waseda University
- Tokyo 169-8555
- Japan
| | - Kenichiro Itami
- Institute of Transformative Bio-Molecules (WPI-ITbM) and Graduate School of Science
- Nagoya University
- Nagoya 464-8602
- Japan
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