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Abstract
We report on the synthesis of a novel class of functionalized thia[6]helicenes and a thia[5]helicene, containing a benzothiophene unit and a second heteroatom embedded in the helix (i.e., nitrogen and oxygen) or a pyrene or a spirobifluorene moiety. These systems are obtained through straightforward and general procedures that involve: (i) palladium-catalyzed annulation of iodo-atropoisomers with internal alkynes and (ii) Suzuki coupling of iodo-atropoisomers with phenyl boronic acid followed by a Mallory-type reaction. Both experimental and theoretical studies on the configurational stability of some selected thia[6]helicenes confirmed their stability toward racemization at room temperature, while the pyrene-based thia[5]helicene was found to be unstable. Moreover, the configuration assignment for one representative thiahelicene was established through the comparison between experimental and theoretical circular dichroism (CD) spectra. A systematic study of the photophysical properties of both thiahelicenes and the corresponding atropoisomers has been carried out to provide a complete overview on the new molecules proposed in this work. The obtained data showed regular trends in all the thiahelicene series with spectroscopic traits in line with those previously observed for similar heterohelicenes.
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2
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Yamashita K, Hirokawa R, Ichikawa M, Hisanaga T, Nagao Y, Takita R, Watanabe K, Kawato Y, Hamashima Y. Mechanistic Details of Asymmetric Bromocyclization with BINAP Monoxide: Identification of Chiral Proton-Bridged Bisphosphine Oxide Complex and Its Application to Parallel Kinetic Resolution. J Am Chem Soc 2022; 144:3913-3924. [PMID: 35226811 DOI: 10.1021/jacs.1c11816] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
The mechanism of our previously reported catalytic asymmetric bromocyclization reactions using 2,2'-bis(diphenylphosphino)-1,1'-binaphthyl (BINAP) monoxide was examined in detail by the means of control experiments, NMR studies, X-ray structure analysis, and CryoSpray electrospray ionization mass spectrometry (ESI-MS) analysis. The chiral BINAP monoxide was transformed to a key catalyst precursor, proton-bridged bisphosphine oxide complex (POHOP·Br), in the presence of N-bromosuccinimide (NBS) and contaminating water. The thus-formed POHOP further reacts with NBS to afford BINAP dioxide and molecular bromine (Br2) simultaneously in equimolar amounts. While the resulting Br2 is activated by NBS to form a more reactive brominating reagent (Br2─NBS), BINAP dioxide serves as a bifunctional catalyst, acting as both a Lewis base that reacts with Br2─NBS to form a chiral brominating agent (P═O+─Br) and also as a Brønsted base for the activation of the substrate. By taking advantage of this novel concerted Lewis/Brønsted base catalysis by BINAP dioxide, we achieved the first regio- and chemodivergent parallel kinetic resolutions (PKRs) of racemic unsymmetrical bisallylic amides via bromocyclization.
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Affiliation(s)
- Kenji Yamashita
- School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Ryo Hirokawa
- School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Mamoru Ichikawa
- School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Tatsunari Hisanaga
- School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Yoshihiro Nagao
- School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Ryo Takita
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Kohei Watanabe
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Yuji Kawato
- School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Yoshitaka Hamashima
- School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
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3
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Evaluation of 3,3′-Triazolyl Biisoquinoline N,N′-Dioxide Catalysts for Asymmetric Hydrosilylation of Hydrazones with Trichlorosilane. Catalysts 2021; 11. [PMID: 36285183 PMCID: PMC9589403 DOI: 10.3390/catal11091103] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
A new class of axial-chiral biisoquinoline
N,N′-dioxides was evaluated as
catalysts for the enantioselective hydrosilylation of acyl hydrazones with
trichlorosilane. While these catalysts provided poor to moderate reactivity and
enantioselectivity, this study represents the first example of the
organocatalytic asymmetric reduction of acyl hydrazones. In addition, the
structures and energies of two possible diastereomeric
catalyst–trichlorosilane complexes
(2a–HSiCl3) were analyzed using density
functional theory calculations.
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4
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Chen W, Tan C, Wang H, Ye X. The Development of Organocatalytic Asymmetric Reduction of Carbonyls and Imines Using Silicon Hydrides. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100394] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Wenchao Chen
- College of Pharmaceutical Science & Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals Zhejiang University of Technology 18 Chaowang Road Hangzhou 310014 P. R. China
| | - Choon‐Hong Tan
- Division of Chemistry and Biological Chemistry School of Physical and Mathematical Sciences Nanyang Technological University 21 Nanyang Link 637371 Singapore
| | - Hong Wang
- College of Pharmaceutical Science & Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals Zhejiang University of Technology 18 Chaowang Road Hangzhou 310014 P. R. China
| | - Xinyi Ye
- College of Pharmaceutical Science & Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals Zhejiang University of Technology 18 Chaowang Road Hangzhou 310014 P. R. China
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5
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Affiliation(s)
- Lona Dutta
- Organic Synthesis and Catalysis Lab Department of Chemical Sciences Indian Institute of Science Education and Research (IISER) Mohali Knowledge City, Sector 81, S. A. S. Nagar Manauli PO Punjab 140306 India
| | - Atanu Mondal
- Organic Synthesis and Catalysis Lab Department of Chemical Sciences Indian Institute of Science Education and Research (IISER) Mohali Knowledge City, Sector 81, S. A. S. Nagar Manauli PO Punjab 140306 India
| | - S. S. V. Ramasastry
- Organic Synthesis and Catalysis Lab Department of Chemical Sciences Indian Institute of Science Education and Research (IISER) Mohali Knowledge City, Sector 81, S. A. S. Nagar Manauli PO Punjab 140306 India
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6
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Pelliccioli V, Dova D, Baldoli C, Graiff C, Licandro E, Cauteruccio S. Diversified Syntheses of Tetrathia[7]helicenes by Metal‐Catalyzed Cross‐Coupling Reactions. European J Org Chem 2020. [DOI: 10.1002/ejoc.202001382] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Valentina Pelliccioli
- Dipartimento di Chimica Università degli Studi di Milano Via Golgi 19 20133 Milano Italy
| | - Davide Dova
- Dipartimento di Chimica Università degli Studi di Milano Via Golgi 19 20133 Milano Italy
| | - Clara Baldoli
- CNR-Istituto di Scienze e Tecnologie Chimiche (SCITEC) “Giulio Natta” Via Golgi 19 20133 Milano Italy
| | - Claudia Graiff
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale Università di Parma Parco Area delle Scienze 17/a 43124 Parma Italy
| | - Emanuela Licandro
- Dipartimento di Chimica Università degli Studi di Milano Via Golgi 19 20133 Milano Italy
| | - Silvia Cauteruccio
- Dipartimento di Chimica Università degli Studi di Milano Via Golgi 19 20133 Milano Italy
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7
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Kotani S, Hanamure T, Mori Y, Nakajima M. Phosphine‐oxide‐catalyzed Enantioselective Cross‐aldol Reactions of Aldehydes with Trichlorosilane as Lewis Acid Promoter. ChemCatChem 2020. [DOI: 10.1002/cctc.202000914] [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)
- Shunsuke Kotani
- Graduate School of Pharmaceutical Sciences Kumamoto University 5-1 Oe-honmachi Chuo-ku Kumamoto 862-0973 Japan
| | - Takuya Hanamure
- Graduate School of Pharmaceutical Sciences Kumamoto University 5-1 Oe-honmachi Chuo-ku Kumamoto 862-0973 Japan
| | - Yoshiki Mori
- Graduate School of Pharmaceutical Sciences Kumamoto University 5-1 Oe-honmachi Chuo-ku Kumamoto 862-0973 Japan
| | - Makoto Nakajima
- Graduate School of Pharmaceutical Sciences Kumamoto University 5-1 Oe-honmachi Chuo-ku Kumamoto 862-0973 Japan
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8
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Beránek T, Žádný J, Strašák T, Karban J, Císařová I, Sýkora J, Storch J. Synthesis of a Helical Phosphine and a Catalytic Study of Its Palladium Complex. ACS OMEGA 2020; 5:882-892. [PMID: 31956841 PMCID: PMC6964522 DOI: 10.1021/acsomega.9b03830] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Accepted: 12/18/2019] [Indexed: 05/28/2023]
Abstract
In this study, 9-(diphenylphosphanyl)[7]helicene was prepared as a suitable ligand for the subsequent synthesis of palladium complexes. The corresponding PdL2Cl2 complex was then successfully obtained in both racemic and enantiopure forms. The PdL2Cl2 complex emerges exclusively in the trans arrangement showing dynamic interconversion between its homo- and heterochiral forms as evidenced by 31P NMR. The trans arrangement was ultimately confirmed by X-ray crystallography using single crystals of the homochiral complex. Additionally, the PdL2Cl2 complex was subjected to screening of its catalytic activity in a Suzuki-type reaction of aryl bromides with aryl boronic acids showing fair yields of the resulting biaryls. However, the final asymmetric reactions catalyzed by the optically pure PdL2Cl2 complex provided targeted binaphtyls only in negligible enantiomeric excess.
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Affiliation(s)
- Tomáš Beránek
- Institute
of Chemical Process Fundamentals, v.v.i., The Czech Academy of Sciences, Rozvojová 1/135, 165 02 Prague 6, Czech Republic
- Department
of Organic Chemistry, University of Chemistry
and Technology Prague, Technická 5, 166 28 Prague 6, Czech Republic
| | - Jaroslav Žádný
- Institute
of Chemical Process Fundamentals, v.v.i., The Czech Academy of Sciences, Rozvojová 1/135, 165 02 Prague 6, Czech Republic
| | - Tomáš Strašák
- Institute
of Chemical Process Fundamentals, v.v.i., The Czech Academy of Sciences, Rozvojová 1/135, 165 02 Prague 6, Czech Republic
| | - Jindřich Karban
- Institute
of Chemical Process Fundamentals, v.v.i., The Czech Academy of Sciences, Rozvojová 1/135, 165 02 Prague 6, Czech Republic
| | - Ivana Císařová
- Department
of Inorganic Chemistry, Faculty of Science, Charles University in Prague, Hlavova 2030, 128 40 Prague 2, Czech Republic
| | - Jan Sýkora
- Institute
of Chemical Process Fundamentals, v.v.i., The Czech Academy of Sciences, Rozvojová 1/135, 165 02 Prague 6, Czech Republic
| | - Jan Storch
- Institute
of Chemical Process Fundamentals, v.v.i., The Czech Academy of Sciences, Rozvojová 1/135, 165 02 Prague 6, Czech Republic
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10
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Ayad T, Gernet A, Pirat JL, Virieux D. Enantioselective reactions catalyzed by phosphine oxides. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.06.042] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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11
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Cauteruccio S, Licandro E, Panigati M, D'Alfonso G, Maiorana S. Modifying the properties of organic molecules by conjugation with metal complexes: The case of peptide nucleic acids and of the intrinsically chiral thiahelicenes. Coord Chem Rev 2019. [DOI: 10.1016/j.ccr.2019.02.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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12
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Procopio EQ, Dova D, Cauteruccio S, Forni A, Licandro E, Panigati M. Dirhenium Coordination Complex Endowed with an Intrinsically Chiral Helical-Shaped Diphosphine Oxide. ACS OMEGA 2018; 3:11649-11654. [PMID: 31459261 PMCID: PMC6645470 DOI: 10.1021/acsomega.8b01290] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Accepted: 09/11/2018] [Indexed: 06/10/2023]
Abstract
A one-pot, multicomponent strategy was used to synthesize the first example of the dirhenium carbonyl coordination complex 2, in which the two metal atoms are connected through a chiral helical-shaped diphosphine oxide. Thanks to the flexibility of the helix of helicene 1, complex 2 was isolated in quite a good yield as a stable compound. It was characterized by analytical and spectroscopic techniques as well as by single-crystal X-ray analysis, which confirmed the chemical structure and the peculiar architecture of 2. In addition, computational studies were in agreement with the transitions observed in the experimental UV-vis spectrum, revealing the presence of two bands with maxima at about 520 (metal-to-ligand charge transfer) and 400 nm (IL).
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Affiliation(s)
| | - Davide Dova
- Dipartimento
di Chimica, Università degli Studi
di Milano, Via Golgi 19, I-20133 Milan, Italy
| | - Silvia Cauteruccio
- Dipartimento
di Chimica, Università degli Studi
di Milano, Via Golgi 19, I-20133 Milan, Italy
| | - Alessandra Forni
- Istituto
di Scienze e Tecnologie Molecolari (ISTM-CNR), Via Golgi 19, I-20133 Milan, Italy
| | - Emanuela Licandro
- Dipartimento
di Chimica, Università degli Studi
di Milano, Via Golgi 19, I-20133 Milan, Italy
| | - Monica Panigati
- Dipartimento
di Chimica, Università degli Studi
di Milano, Via Golgi 19, I-20133 Milan, Italy
- Istituto
per lo Studio delle Macromolecole (ISMAC-CNR), Via E. Bassini 15, I-20133 Milan, Italy
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13
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Matsumoto A, Yonemitsu K, Ozaki H, Míšek J, Starý I, Stará IG, Soai K. Reversal of the sense of enantioselectivity between 1- and 2-aza[6]helicenes used as chiral inducers of asymmetric autocatalysis. Org Biomol Chem 2018; 15:1321-1324. [PMID: 28102409 DOI: 10.1039/c6ob02745h] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Reversal of the sense of enantioselectivity was observed between 1-aza[6]helicene 2 and 2-aza[6]helicene 3 employed as chiral inducers of asymmetric autocatalysis of pyrimidyl alkanol. In the presence of (P)-(+)-1-aza[6]helicene 2, the reaction of pyrimidine-5-carbaldehyde 1 with diisopropylzinc afforded, in conjunction with asymmetric autocatalysis, (S)-pyrimidyl alkanol 4 with high ee. Surprisingly, the reaction in the presence of (P)-(+)-2-aza[6]helicene 3 gave the opposite enantiomer of (R)-alkanol 4 with high ee. In the same manner, (M)-(-)-2 and (M)-(-)-3 afforded (R)- and (S)-alkanol 4, respectively. The sense of enantioselectivity is controlled not only by the helicity of the azahelicene derivatives but also by the position of the nitrogen atom.
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Affiliation(s)
- Arimasa Matsumoto
- Department of Applied Chemistry, Tokyo University of Science, Kagurazaka, Shinjuku-ku, Tokyo, 162-8601 Japan. and Research Institute of Science and Technology, Tokyo University of Science, Kagurazaka, Shinjuku-ku, Tokyo, 162-8601 Japan
| | - Kento Yonemitsu
- Department of Applied Chemistry, Tokyo University of Science, Kagurazaka, Shinjuku-ku, Tokyo, 162-8601 Japan.
| | - Hanae Ozaki
- Department of Applied Chemistry, Tokyo University of Science, Kagurazaka, Shinjuku-ku, Tokyo, 162-8601 Japan.
| | - Jiří Míšek
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo nám. 2, 166 10 Prague 6, Czech Republic.
| | - Ivo Starý
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo nám. 2, 166 10 Prague 6, Czech Republic.
| | - Irena G Stará
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo nám. 2, 166 10 Prague 6, Czech Republic.
| | - Kenso Soai
- Department of Applied Chemistry, Tokyo University of Science, Kagurazaka, Shinjuku-ku, Tokyo, 162-8601 Japan. and Research Institute of Science and Technology, Tokyo University of Science, Kagurazaka, Shinjuku-ku, Tokyo, 162-8601 Japan
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14
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Abstract
Helicenes are unique helical chromophores possessing advanced and well-controlled spectral and chemical properties owing to their diverse functionalization and defined structures. Specific modification of these molecules by introducing aromatic rings of differing nature and different functional groups results in special chiroptical properties, making them effective chiral auxiliaries and supramolecular chirogenic hosts. This review aims to highlight these distinct structural features of helicenes; the different synthetic and supramolecular approaches responsible for their efficient chirality control; and their employment in the chirogenic systems, which are still not fully explored. It further covers the limitation, scope, and future prospects of helicene chromophores in chiral chemistry.
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16
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Dova D, Viglianti L, Mussini PR, Prager S, Dreuw A, Voituriez A, Licandro E, Cauteruccio S. Tetrathia[7]helicene Phosphorus Derivatives: Experimental and Theoretical Investigations of Electronic Properties, and Preliminary Applications as Organocatalysts. ASIAN J ORG CHEM 2016. [DOI: 10.1002/ajoc.201600025] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Davide Dova
- Dipartimento di ChimicaUniversità degli Studi di Milano via Golgi 19 20133 Milano Italy
| | - Lucia Viglianti
- Dipartimento di ChimicaUniversità degli Studi di Milano via Golgi 19 20133 Milano Italy
| | - Patrizia R. Mussini
- Dipartimento di ChimicaUniversità degli Studi di Milano via Golgi 19 20133 Milano Italy
| | - Stefan Prager
- Interdisciplinary Center for Scientific ComputingHeidelberg University Im Neuenheimer Feld 368 69120 Heidelberg Germany
| | - Andreas Dreuw
- Interdisciplinary Center for Scientific ComputingHeidelberg University Im Neuenheimer Feld 368 69120 Heidelberg Germany
| | - Arnaud Voituriez
- Institut de Chimie des Substances Naturelles CNRS UPR 2301 1, av. De la Terrasse 91198 Gif-sur-Yvette France
| | - Emanuela Licandro
- Dipartimento di ChimicaUniversità degli Studi di Milano via Golgi 19 20133 Milano Italy
| | - Silvia Cauteruccio
- Dipartimento di ChimicaUniversità degli Studi di Milano via Golgi 19 20133 Milano Italy
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Yamamoto Y, Sakai H, Yuasa J, Araki Y, Wada T, Sakanoue T, Takenobu T, Kawai T, Hasobe T. Synthetic Control of the Excited-State Dynamics and Circularly Polarized Luminescence of Fluorescent “Push-Pull” Tetrathia[9]helicenes. Chemistry 2016; 22:4263-73. [DOI: 10.1002/chem.201504048] [Citation(s) in RCA: 72] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2015] [Indexed: 12/27/2022]
Affiliation(s)
- Yuki Yamamoto
- Department of Chemistry; Faculty of Science and Technology; Keio University; 3-14-1 Hiyoshi Yokohama, Kanagawa 223-8522 Japan
| | - Hayato Sakai
- Department of Chemistry; Faculty of Science and Technology; Keio University; 3-14-1 Hiyoshi Yokohama, Kanagawa 223-8522 Japan
| | - Junpei Yuasa
- Graduate School of Materials Science; Nara Institute of Science and Technology, NAIST; Ikoma, Nara 630-0192 Japan
- PRESTO (Japan) Science and Technology Agency; Kawaguchi 332-0012 Japan
| | - Yasuyuki Araki
- Institute of Multidisciplinary Research for Advanced Materials; Tohoku University; 2-1-1 Katahira, Aoba-ku Sendai 980-8577 Japan
| | - Takehiko Wada
- Institute of Multidisciplinary Research for Advanced Materials; Tohoku University; 2-1-1 Katahira, Aoba-ku Sendai 980-8577 Japan
| | - Tomo Sakanoue
- Department of Applied Physics; Waseda University; 3-4-1, Okubo, Shinjuku Tokyo 169-8555 Japan
| | - Taishi Takenobu
- Department of Applied Physics; Waseda University; 3-4-1, Okubo, Shinjuku Tokyo 169-8555 Japan
| | - Tsuyoshi Kawai
- Graduate School of Materials Science; Nara Institute of Science and Technology, NAIST; Ikoma, Nara 630-0192 Japan
| | - Taku Hasobe
- Department of Chemistry; Faculty of Science and Technology; Keio University; 3-14-1 Hiyoshi Yokohama, Kanagawa 223-8522 Japan
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18
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Kotani S, Kai K, Shimoda Y, Hu H, Gao S, Sugiura M, Ogasawara M, Nakajima M. Concise Asymmetric Construction of C2 -symmetric 1,9-Diarylnonanoids Using a Hypervalent Silicon Complex: Total Synthesis of (-)-Ericanone. Chem Asian J 2016; 11:376-9. [PMID: 26610889 DOI: 10.1002/asia.201501080] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2015] [Indexed: 12/11/2022]
Abstract
By using a phosphine oxide-catalyzed enantioselective double aldol reaction, we achieved the concise construction of C2 -symmetric 1,9-diarylnonanoids, enabling the synthesis of (-)-ericanone from p-hydroxybenzaldehyde in 6 steps with 65 % overall yield. The enantioselective double aldol reaction is useful for establishing C2 -symmetric 1,9-diaryl-3,7-dihydroxy-5-nonanones with a single operation. Furthermore, the use of o-nosyl-protected p-hydroxybenzaldehyde and a 4,4'-disubstituted BINAP dioxide catalyst dramatically improved the reactivity and selectivity in the double aldol reaction, enabling the total synthesis of (-)-ericanone with high yield and with excellent enantiopurity.
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Affiliation(s)
- Shunsuke Kotani
- Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-honmachi, Chuo-ku, Kumamoto, 862-0973, Japan. .,Priority Organization for Innovation and Excellence, Kumamoto University, 5-1 Oe-honmachi, Chuo-ku, Kumamoto, 862-0973, Japan.
| | - Kosuke Kai
- Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-honmachi, Chuo-ku, Kumamoto, 862-0973, Japan
| | - Yasushi Shimoda
- Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-honmachi, Chuo-ku, Kumamoto, 862-0973, Japan
| | - Hao Hu
- Catalysis Research Center and Graduate School of Life Science, Hokkaido University, Kita 21, Nishi 10, Kita-ku, Sapporo, 001-0021, Japan
| | - Shen Gao
- Catalysis Research Center and Graduate School of Life Science, Hokkaido University, Kita 21, Nishi 10, Kita-ku, Sapporo, 001-0021, Japan
| | - Masaharu Sugiura
- Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-honmachi, Chuo-ku, Kumamoto, 862-0973, Japan
| | - Masamichi Ogasawara
- Catalysis Research Center and Graduate School of Life Science, Hokkaido University, Kita 21, Nishi 10, Kita-ku, Sapporo, 001-0021, Japan
| | - Makoto Nakajima
- Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-honmachi, Chuo-ku, Kumamoto, 862-0973, Japan.
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20
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Aillard P, Dova D, Magné V, Retailleau P, Cauteruccio S, Licandro E, Voituriez A, Marinetti A. The synthesis of substituted phosphathiahelicenes via regioselective bromination of a preformed helical scaffold: a new approach to modular ligands for enantioselective gold-catalysis. Chem Commun (Camb) 2016; 52:10984-7. [DOI: 10.1039/c6cc04765c] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
New substituted phosphathiahelicenes have been synthesized and used as ligands in gold(i)-catalyzed [4+2] cyclizations of 1,6-enynes (up to 91% ee).
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Affiliation(s)
- Paul Aillard
- Institut de Chimie des Substances Naturelles
- CNRS UPR 2301
- Univ. Paris-Sud
- Université Paris-Saclay
- 1, av. de la Terrasse
| | - Davide Dova
- Dipartimento di Chimica
- Università degli Studi di Milano
- 20133 Milan
- Italy
| | - Valentin Magné
- Institut de Chimie des Substances Naturelles
- CNRS UPR 2301
- Univ. Paris-Sud
- Université Paris-Saclay
- 1, av. de la Terrasse
| | - Pascal Retailleau
- Institut de Chimie des Substances Naturelles
- CNRS UPR 2301
- Univ. Paris-Sud
- Université Paris-Saclay
- 1, av. de la Terrasse
| | | | - Emanuela Licandro
- Dipartimento di Chimica
- Università degli Studi di Milano
- 20133 Milan
- Italy
| | - Arnaud Voituriez
- Institut de Chimie des Substances Naturelles
- CNRS UPR 2301
- Univ. Paris-Sud
- Université Paris-Saclay
- 1, av. de la Terrasse
| | - Angela Marinetti
- Institut de Chimie des Substances Naturelles
- CNRS UPR 2301
- Univ. Paris-Sud
- Université Paris-Saclay
- 1, av. de la Terrasse
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Ruch AA, Handa S, Kong F, Nesterov VN, Pahls DR, Cundari TR, Slaughter LM. Competing amination and C–H arylation pathways in Pd/xantphos-catalyzed transformations of binaphthyl triflates: switchable routes to chiral amines and helicene derivatives. Org Biomol Chem 2016; 14:8123-40. [DOI: 10.1039/c6ob01102k] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A Pd(OAc)2/xantphos catalyst system can be tuned to promote either amination or C–H arylation of hindered binaphthyl 2-triflates, with xantphos's hemilability playing a key role.
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Affiliation(s)
- Aaron A. Ruch
- Department of Chemistry
- University of North Texas
- Denton
- USA
| | - Sachin Handa
- Department of Chemistry
- Oklahoma State University Stillwater
- Oklahoma
- USA
| | - Fanji Kong
- Department of Chemistry
- University of North Texas
- Denton
- USA
| | | | - Dale R. Pahls
- Department of Chemistry
- University of North Texas
- Denton
- USA
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22
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Doulcet J, Stephenson GR. The Use of (-)-Sparteine/Organolithium Reagents for the Enantioselective Lithiation of 7,8-Dipropyltetrathia[7]helicene: Single and Double Kinetic Resolution Procedures. Chemistry 2015; 21:18677-89. [PMID: 26560342 DOI: 10.1002/chem.201502958] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2015] [Indexed: 11/11/2022]
Abstract
The effect of organolithium reagent (RLi: R=nBu, iPr, sBu, tBu), solvent (diethyl ether, diethyl ether/THF and MTBE), and stoichiometry on the (-)-sparteine-mediated silylation of 7,8-dipropyltetrathia[7]helicene shows that, unusually, substantially more than 0.5 equivalent of RLi (R=iPr, sBu, tBu) and a large excess of (-)-sparteine (R=nBu, sBu) is often needed to achieve substantial conversions and good ee values. With nBuLi, however, just one equivalent of the organolithium reagent is sufficient to obtain high conversions. Our best results were obtained using the convenient tBuLi/(-)-sparteine adduct with which the need for a high (-)-sparteine/RLi ratio can be avoided. Single- and double-kinetic resolution (KR) procedures give enantiopure samples of 2-trimethylsilyl- and 2,13-di(trimethylsilyl)-7,8-dipropyltetrathia[7]helicene and two-step double-KR combining (-)-sparteine/sBuLi and chiral formamides affords the synthetically valuable 2-formyl-7,8-dipropyltetrathia[7]helicene. This is the first use of (-)-sparteine for the enantioselective lithiation of helicenes and the first report of tBuLi outperforming sBuLi in a (-)-sparteine-mediated procedure.
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Affiliation(s)
- Julien Doulcet
- School of Chemistry, University of East Anglia, Norwich Research Park, Norwich, Norfolk NR4 7TJ (UK)
| | - G Richard Stephenson
- School of Chemistry, University of East Anglia, Norwich Research Park, Norwich, Norfolk NR4 7TJ (UK).
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23
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Aillard P, Retailleau P, Voituriez A, Marinetti A. Synthesis of New Phosphahelicene Scaffolds and Development of Gold(I)-Catalyzed Enantioselective Allenene Cyclizations. Chemistry 2015; 21:11989-93. [DOI: 10.1002/chem.201501697] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2015] [Indexed: 01/13/2023]
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24
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Dova D, Cauteruccio S, Prager S, Dreuw A, Graiff C, Licandro E. Chiral Thiahelicene-Based Alkyl Phosphine–Borane Complexes: Synthesis, X-ray Characterization, and Theoretical and Experimental Investigations of Optical Properties. J Org Chem 2015; 80:3921-8. [DOI: 10.1021/acs.joc.5b00243] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Davide Dova
- Dipartimento
di Chimica, Università degli Studi di Milano, via Golgi
19, I-20133 Milan, Italy
| | - Silvia Cauteruccio
- Dipartimento
di Chimica, Università degli Studi di Milano, via Golgi
19, I-20133 Milan, Italy
| | - Stefan Prager
- Interdisciplinary
Center for Scientific Computing, Heidelberg University, Im Neuenheimer
Feld 368, 69120 Heidelberg, Germany
| | - Andreas Dreuw
- Interdisciplinary
Center for Scientific Computing, Heidelberg University, Im Neuenheimer
Feld 368, 69120 Heidelberg, Germany
| | - Claudia Graiff
- Dipartimento
di Chimica, Università degli Studi di Parma, Viale delle
Scienze 17/A, 43100 Parma, Italy
| | - Emanuela Licandro
- Dipartimento
di Chimica, Università degli Studi di Milano, via Golgi
19, I-20133 Milan, Italy
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25
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Gicquel M, Zhang Y, Aillard P, Retailleau P, Voituriez A, Marinetti A. Phosphahelicenes in Asymmetric Organocatalysis: [3+2] Cyclizations of γ-Substituted Allenes and Electron-Poor Olefins. Angew Chem Int Ed Engl 2015; 54:5470-3. [DOI: 10.1002/anie.201500299] [Citation(s) in RCA: 107] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2015] [Indexed: 12/20/2022]
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26
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Gicquel M, Zhang Y, Aillard P, Retailleau P, Voituriez A, Marinetti A. Phosphahelicenes in Asymmetric Organocatalysis: [3+2] Cyclizations of γ-Substituted Allenes and Electron-Poor Olefins. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201500299] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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27
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Virieux D, Sevrain N, Ayad T, Pirat JL. Helical Phosphorus Derivatives. ADVANCES IN HETEROCYCLIC CHEMISTRY 2015. [DOI: 10.1016/bs.aihch.2015.06.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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28
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Cauteruccio S, Bartoli C, Carrara C, Dova D, Errico C, Ciampi G, Dinucci D, Licandro E, Chiellini F. A Nanostructured PLGA System for Cell Delivery of a Tetrathiahelicene as a Model for Helical DNA Intercalators. Chempluschem 2014; 80:490-493. [DOI: 10.1002/cplu.201402347] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2014] [Indexed: 11/09/2022]
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29
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Aillard P, Voituriez A, Marinetti A. Helicene-like chiral auxiliaries in asymmetric catalysis. Dalton Trans 2014; 43:15263-78. [DOI: 10.1039/c4dt01935k] [Citation(s) in RCA: 118] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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