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Gul R, Hu L, Liu Y, Xie Y. Synthesis of 1-Aryltetralins via Re 2O 7/HReO 4 Mediated Intramolecular Hydroarylations. J Org Chem 2023; 88:12079-12086. [PMID: 37559373 DOI: 10.1021/acs.joc.3c00639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/11/2023]
Abstract
Here, we describe highly efficient intramolecular hydroarylations mediated by Re2O7/HReO4. Styrene derivatives of different electronic properties have been activated to effect a challenging intramolecular hydroarylation for the facile access to various substituted 1-aryltetralin structures. This method is characterized by mild reaction conditions, broad substrate scope, high chemical yields, and 100% atom economy. The potential synthetic application of this methodology was exemplified by the efficient total synthesis of an isoCA-4 analogue.
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Affiliation(s)
- Rukhsar Gul
- Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica; Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education; Hubei Key Laboratory of Materials Chemistry and Service Failure; School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, China
| | - Liqun Hu
- Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica; Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education; Hubei Key Laboratory of Materials Chemistry and Service Failure; School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, China
| | - Yibing Liu
- Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica; Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education; Hubei Key Laboratory of Materials Chemistry and Service Failure; School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, China
| | - Youwei Xie
- Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica; Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education; Hubei Key Laboratory of Materials Chemistry and Service Failure; School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, China
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2
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Das J, Das SK. Regioselectivity of the S EAr-based cyclizations and S EAr-terminated annulations of 3,5-unsubstituted, 4-substituted indoles. Beilstein J Org Chem 2022; 18:293-302. [PMID: 35330778 PMCID: PMC8919422 DOI: 10.3762/bjoc.18.33] [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: 10/27/2021] [Accepted: 02/22/2022] [Indexed: 11/23/2022] Open
Abstract
Indole-3,4- and 4,5-fused carbo- and heterocycles are ubiquitous in bioactive natural products and pharmaceuticals, and hence, a variety of synthetic approaches toward such compounds have been developed. Among these, cyclization and annulation of 3,5-unsubstituted, 4-substituted indoles involving an electrophilic aromatic substitution (SEAr) as the ring closure are particularly attractive, because they avoid the use of 3,4- or 4,5-difunctionalized indoles as starting materials. However, since 3,5-unsubstituted, 4-substituted indoles have two potential ring-closure sites (indole C3 and C5 positions), such reactions in principle can furnish either or both of the indole 3,4- and 4,5-fused ring systems. This Commentary will briefly highlight the issue by summarizing recent relevant literature reports.
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Affiliation(s)
- Jonali Das
- Department of Chemical Sciences, Tezpur University, Napaam, Tezpur-784028, Assam, India
| | - Sajal Kumar Das
- Department of Chemical Sciences, Tezpur University, Napaam, Tezpur-784028, Assam, India
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3
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Ikawa T, Yamamoto Y, Heguri A, Fukumoto Y, Murakami T, Takagi A, Masuda Y, Yahata K, Aoyama H, Shigeta Y, Tokiwa H, Akai S. Could London Dispersion Force Control Regioselective (2 + 2) Cyclodimerizations of Benzynes? YES: Application to the Synthesis of Helical Biphenylenes. J Am Chem Soc 2021; 143:10853-10859. [PMID: 34197100 DOI: 10.1021/jacs.1c05434] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
In recent years, London dispersion interactions, which are the attractive component of the van der Waals potential, have been found to play an important role in controlling the regio- and/or stereoselectivity of various reactions. Particularly, the dispersion interactions between substrates and catalysts (or ligands) are dominant in various selective catalyzes. In contrast, repulsive steric interactions, rather than the attractive dispersion interactions, between bulky substituents are predominant in most of the noncatalytic reactions. Herein, we demonstrate the first example of London dispersion-controlled noncatalytic (2 + 2) cyclodimerization of substituted benzynes to selectively afford proximal biphenylenes in high yields and regioselectivities, depending on the extent of dispersion interactions in the substituents. This method can be applied for the synthesis of novel helical biphenylenes, which would be fascinating for chemists as these compounds are potential skeletons for ligands, catalysts, and medicines.
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Affiliation(s)
- Takashi Ikawa
- Laboratory of Organic Chemistry, Gifu Pharmaceutical University, Daigaku-Nishi, Gifu 501-1196, Japan
| | - Yuta Yamamoto
- Department of Chemistry, Rikkyo University, Nishi-Ikebukuro, Toshima, Tokyo 171-8501, Japan
| | - Akito Heguri
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Yutaka Fukumoto
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Tomonari Murakami
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Akira Takagi
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Yuto Masuda
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Kenzo Yahata
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Hiroshi Aoyama
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Yasuteru Shigeta
- Center for Computational Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8577, Japan
| | - Hiroaki Tokiwa
- Department of Chemistry, Rikkyo University, Nishi-Ikebukuro, Toshima, Tokyo 171-8501, Japan
| | - Shuji Akai
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
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4
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Zhang P, Tsuji N, Ouyang J, List B. Strong and Confined Acids Catalyze Asymmetric Intramolecular Hydroarylations of Unactivated Olefins with Indoles. J Am Chem Soc 2021; 143:675-680. [PMID: 33399449 PMCID: PMC7830113 DOI: 10.1021/jacs.0c12042] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
![]()
In
recent years, several
organocatalytic asymmetric hydroarylations of activated, electron-poor
olefins with activated, electron-rich arenes have been described.
In contrast, only a few approaches that can handle unactivated, electronically neutral olefins have been reported and invariably
require transition metal catalysts. Here we show how an efficient
and highly enantioselective catalytic asymmetric intramolecular hydroarylation
of aliphatic and aromatic olefins with indoles can be realized using
strong and confined IDPi Brønsted acid catalysts. This unprecedented
transformation is enabled by tertiary carbocation formation and establishes
quaternary stereogenic centers in excellent enantioselectivity and
with a broad substrate scope that includes an aliphatic iodide, an
azide, and an alkyl boronate, which can be further elaborated into
bioactive molecules.
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Affiliation(s)
- Pinglu Zhang
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr, Germany
| | - Nobuya Tsuji
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr, Germany.,Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Sapporo 001-0021, Japan
| | - Jie Ouyang
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr, Germany
| | - Benjamin List
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr, Germany.,Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Sapporo 001-0021, Japan
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5
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Vayer M, Bour C, Gandon V. Exploring the Versatility of 7‐Alkynylcycloheptatriene Scaffolds Under π‐Acid Catalysis. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000623] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Marie Vayer
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO) CNRS UMR 8182 Université Paris‐Saclay Bâtiment 420 91405 Orsay cedex France
| | - Christophe Bour
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO) CNRS UMR 8182 Université Paris‐Saclay Bâtiment 420 91405 Orsay cedex France
| | - Vincent Gandon
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO) CNRS UMR 8182 Université Paris‐Saclay Bâtiment 420 91405 Orsay cedex France
- Laboratoire de Chimie Moléculaire (LCM) CNRS UMR 9168, Ecole Polytechnique Institut Polytechnique de Paris route de Saclay 91128 Palaiseau cedex France
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6
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Chang MY, Lai KX, Chang YL. In(OTf)3-catalyzed intramolecular hydroarylation of α-phenylallyl β-ketosulfones – synthesis of sulfonyl 1-benzosuberones and 1-tetralones. RSC Adv 2020; 10:18231-18244. [PMID: 35517185 PMCID: PMC9053753 DOI: 10.1039/d0ra01962c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2020] [Accepted: 05/05/2020] [Indexed: 11/21/2022] Open
Abstract
In(OTf)3-catalyzed intramolecular hydroarylation of α-phenylallyl β-ketosulfones provides sulfonyl 1-benzosuberones and 1-tetralones in moderate to good yields in refluxing (CH2Cl)2 under open-vessel and easy-operation reaction conditions. A plausible mechanism is proposed and discussed. This highly regioselective protocol provides an atom-economic ring-closure route. In(OTf)3-catalyzed intramolecular hydroarylation of α-phenylallyl β-ketosulfones provides sulfonyl 1-benzosuberones and 1-tetralones in moderate to good yields in refluxing (CH2Cl)2 under open-vessel and easy-operation reaction conditions.![]()
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Affiliation(s)
- Meng-Yang Chang
- Department of Medicinal and Applied Chemistry
- Kaohsiung Medical University Hospital
- Kaohsiung Medical University
- Kaohsiung 80708
- Taiwan
| | - Kai-Xiang Lai
- Department of Medicinal and Applied Chemistry
- Kaohsiung Medical University Hospital
- Kaohsiung Medical University
- Kaohsiung 80708
- Taiwan
| | - Yu-Lun Chang
- Department of Medicinal and Applied Chemistry
- Kaohsiung Medical University Hospital
- Kaohsiung Medical University
- Kaohsiung 80708
- Taiwan
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Rothermel K, Melikian M, Hioe J, Greindl J, Gramüller J, Žabka M, Sorgenfrei N, Hausler T, Morana F, Gschwind RM. Internal acidity scale and reactivity evaluation of chiral phosphoric acids with different 3,3'-substituents in Brønsted acid catalysis. Chem Sci 2019; 10:10025-10034. [PMID: 32015815 PMCID: PMC6977555 DOI: 10.1039/c9sc02342a] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Accepted: 09/02/2019] [Indexed: 12/16/2022] Open
Abstract
NMR H-bond analysis reveals an offset of internal and external acidities of catalysts and allows for a detailed reactivity analysis.
The concept of hydrogen bonding for enhancing substrate binding and controlling selectivity and reactivity is central in catalysis. However, the properties of these key hydrogen bonds and their catalyst-dependent variations are extremely difficult to determine directly by experiments. Here, for the first time the hydrogen bond properties of a whole series of BINOL-derived chiral phosphoric acid (CPA) catalysts in their substrate complexes with various imines were investigated to derive the influence of different 3,3′-substituents on the acidity and reactivity. NMR 1H and 15N chemical shifts and 1JNH coupling constants of these hydrogen bonds were used to establish an internal acidity scale corroborated by calculations. Deviations from calculated external acidities reveal the importance of intermolecular interactions for this key feature of CPAs. For CPAs with similarly sized binding pockets, a correlation of reactivity and hydrogen bond strengths of the catalyst was found. A catalyst with a very small binding pocket showed significantly reduced reactivities. Therefore, NMR isomerization kinetics, population and chemical shift analyses of binary and ternary complexes as well as reaction kinetics were performed to address the steps of the transfer hydrogenation influencing the overall reaction rate. The results of CPAs with different 3,3′-substituents show a delicate balance between the isomerization and the ternary complex formation to be rate-determining. For CPAs with an identical acidic motif and similar sterics, reactivity and internal acidity correlated inversely. In cases where higher sterical demand within the binary complex hinders the binding of the second substrate, the correlation between acidity and reactivity breaks down.
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Affiliation(s)
- Kerstin Rothermel
- Institut für Organische Chemie , Universität Regensburg , Universitätsstraße 31 , D-93053 Regensburg , Germany .
| | - Maxime Melikian
- Institut für Organische Chemie , Universität Regensburg , Universitätsstraße 31 , D-93053 Regensburg , Germany .
| | - Johnny Hioe
- Institut für Organische Chemie , Universität Regensburg , Universitätsstraße 31 , D-93053 Regensburg , Germany .
| | - Julian Greindl
- Institut für Organische Chemie , Universität Regensburg , Universitätsstraße 31 , D-93053 Regensburg , Germany .
| | - Johannes Gramüller
- Institut für Organische Chemie , Universität Regensburg , Universitätsstraße 31 , D-93053 Regensburg , Germany .
| | - Matej Žabka
- Institut für Organische Chemie , Universität Regensburg , Universitätsstraße 31 , D-93053 Regensburg , Germany .
| | - Nils Sorgenfrei
- Institut für Organische Chemie , Universität Regensburg , Universitätsstraße 31 , D-93053 Regensburg , Germany .
| | - Thomas Hausler
- Institut für Organische Chemie , Universität Regensburg , Universitätsstraße 31 , D-93053 Regensburg , Germany .
| | - Fabio Morana
- Institut für Organische Chemie , Universität Regensburg , Universitätsstraße 31 , D-93053 Regensburg , Germany .
| | - Ruth M Gschwind
- Institut für Organische Chemie , Universität Regensburg , Universitätsstraße 31 , D-93053 Regensburg , Germany .
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