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Vogl LS, Mayer P, Robiette R, Waser M. Chiral Isochalcogenourea-Catalysed Enantioselective (4+2) Cycloadditions of Allenoates. Angew Chem Int Ed Engl 2024; 63:e202315345. [PMID: 38010747 PMCID: PMC10952905 DOI: 10.1002/anie.202315345] [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: 10/11/2023] [Revised: 11/13/2023] [Accepted: 11/27/2023] [Indexed: 11/29/2023]
Abstract
Allenoates are versatile building blocks which are primarily activated and controlled using chiral tert. phosphine and tert. amine Lewis bases. We herein report the first example of allenoate activation by using chiral isochalcogenoureas (IChU) for formal (4+2) cycloaddition reactions. Compared to established phosphine and amine catalysis, the use of these easily available Lewis bases enables new stereoselective reaction pathways proceeding with high enantioselectivities, diastereoselectivities, and in good yields. In addition, the factors governing enantioselectivity and the origin of the observed differences compared to other commonly used Lewis bases are explained.
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Affiliation(s)
- Lukas S. Vogl
- Institute of Organic ChemistryJohannes Kepler University LinzAltenbergerstrasse 694040LinzAustria
| | - Peter Mayer
- Department ChemieLudwig-Maximilians-Universität MünchenButenandtstraße 5–1381377MünchenGermany
| | - Raphaël Robiette
- Institute of Condensed Matter and NanosciencesUniversité catholique de LouvainPlace Louis Pasteur 1 box L4.01.021348Louvain-la-NeuveBelgium
| | - Mario Waser
- Institute of Organic ChemistryJohannes Kepler University LinzAltenbergerstrasse 694040LinzAustria
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2
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Vogl LS, Mayer P, Robiette R, Waser M. Chiral Isochalcogenourea-Catalysed Enantioselective (4+2) Cycloadditions of Allenoates. ANGEWANDTE CHEMIE (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 136:e202315345. [PMID: 38549953 PMCID: PMC10976662 DOI: 10.1002/ange.202315345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Indexed: 06/02/2024]
Abstract
Allenoates are versatile building blocks which are primarily activated and controlled using chiral tert. phosphine and tert. amine Lewis bases. We herein report the first example of allenoate activation by using chiral isochalcogenoureas (IChU) for formal (4+2) cycloaddition reactions. Compared to established phosphine and amine catalysis, the use of these easily available Lewis bases enables new stereoselective reaction pathways proceeding with high enantioselectivities, diastereoselectivities, and in good yields. In addition, the factors governing enantioselectivity and the origin of the observed differences compared to other commonly used Lewis bases are explained.
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Affiliation(s)
- Lukas S. Vogl
- Institute of Organic ChemistryJohannes Kepler University LinzAltenbergerstrasse 694040LinzAustria
| | - Peter Mayer
- Department ChemieLudwig-Maximilians-Universität MünchenButenandtstraße 5–1381377MünchenGermany
| | - Raphaël Robiette
- Institute of Condensed Matter and NanosciencesUniversité catholique de LouvainPlace Louis Pasteur 1 box L4.01.021348Louvain-la-NeuveBelgium
| | - Mario Waser
- Institute of Organic ChemistryJohannes Kepler University LinzAltenbergerstrasse 694040LinzAustria
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3
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Parker SF, Fortes AD, Nye DW, Day SJ, Kuck D. Centrohexaindane, a Unique Polyaromatic Hydrocarbon Bearing the Rare C q (C q ) 4 Core: Inelastic Neutron Scattering, Infrared and Raman Spectroscopy. Chemistry 2023; 29:e202302057. [PMID: 37449834 DOI: 10.1002/chem.202302057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Revised: 07/14/2023] [Accepted: 07/14/2023] [Indexed: 07/18/2023]
Abstract
The structure and vibrational spectroscopy of centrohexaindane, 1, was investigated. This unusual molecule has a quaternary carbon atom that is coordinated to four further such quaternary carbon atoms as its core, each pair of which is bonded to an ortho-phenylene unit. Previous NMR studies have shown that the molecule has tetrahedral (Td ) symmetry in solution. The infrared and Raman spectra of chloroform and deuterochloroform solutions of 1 are completely in agreement with this conclusion, as the only modes that are visible are those allowed for Td symmetry. This is not the case in the solid state: X-ray powder diffraction indicates that the unit cell is triclinic or monoclinic with a volume in excess of 4000 Å3 . The vibrational spectroscopy is consistent with C1 site symmetry and the presence of at least two molecules in the primitive cell. It is likely that the space group is centrosymmetric.
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Affiliation(s)
- Stewart F Parker
- ISIS Neutron and Muon Source, STFC Rutherford Appleton Laboratory, Chilton, OX11 0QX, UK
| | - A Dominic Fortes
- ISIS Neutron and Muon Source, STFC Rutherford Appleton Laboratory, Chilton, OX11 0QX, UK
| | - Daniel W Nye
- ISIS Neutron and Muon Source, STFC Rutherford Appleton Laboratory, Chilton, OX11 0QX, UK
| | - Sarah J Day
- Diamond Light Source Ltd, Harwell Science and Innovation Campus, Didcot, OX11 0DE, UK
| | - Dietmar Kuck
- Department of Chemistry, Bielefeld University, 33615, Bielefeld, Germany
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Zhang J, Zhang S, Ding Z, Hou A, Fu J, Su H, Cheng M, Lin B, Yang L, Liu Y. Gold(I)-Catalyzed Tandem Intramolecular Methoxylation/Double Aldol Condensation Strategy Yielding 2,2′-Spirobi[indene] Derivatives. Org Lett 2022; 24:6777-6782. [DOI: 10.1021/acs.orglett.2c02653] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jingfu Zhang
- Key Laboratory of Structure-Based Drug Design and Discovery (Shenyang Pharmaceutical University), Ministry of Education, Shenyang 110016, P.R. China
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, P.R. China
- Institute of Drug Research in Medicine Capital of China, Benxi 117000, P.R. China
| | - Sen Zhang
- Key Laboratory of Structure-Based Drug Design and Discovery (Shenyang Pharmaceutical University), Ministry of Education, Shenyang 110016, P.R. China
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, P.R. China
- Institute of Drug Research in Medicine Capital of China, Benxi 117000, P.R. China
| | - Zhixing Ding
- Key Laboratory of Structure-Based Drug Design and Discovery (Shenyang Pharmaceutical University), Ministry of Education, Shenyang 110016, P.R. China
- Institute of Drug Research in Medicine Capital of China, Benxi 117000, P.R. China
| | - Anbin Hou
- Key Laboratory of Structure-Based Drug Design and Discovery (Shenyang Pharmaceutical University), Ministry of Education, Shenyang 110016, P.R. China
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, P.R. China
- Institute of Drug Research in Medicine Capital of China, Benxi 117000, P.R. China
| | - Jiayue Fu
- Key Laboratory of Structure-Based Drug Design and Discovery (Shenyang Pharmaceutical University), Ministry of Education, Shenyang 110016, P.R. China
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, P.R. China
- Institute of Drug Research in Medicine Capital of China, Benxi 117000, P.R. China
| | - Hongwei Su
- Key Laboratory of Structure-Based Drug Design and Discovery (Shenyang Pharmaceutical University), Ministry of Education, Shenyang 110016, P.R. China
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, P.R. China
- Institute of Drug Research in Medicine Capital of China, Benxi 117000, P.R. China
| | - Maosheng Cheng
- Key Laboratory of Structure-Based Drug Design and Discovery (Shenyang Pharmaceutical University), Ministry of Education, Shenyang 110016, P.R. China
- Institute of Drug Research in Medicine Capital of China, Benxi 117000, P.R. China
| | - Bin Lin
- Key Laboratory of Structure-Based Drug Design and Discovery (Shenyang Pharmaceutical University), Ministry of Education, Shenyang 110016, P.R. China
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, P.R. China
- Institute of Drug Research in Medicine Capital of China, Benxi 117000, P.R. China
| | - Lu Yang
- Key Laboratory of Structure-Based Drug Design and Discovery (Shenyang Pharmaceutical University), Ministry of Education, Shenyang 110016, P.R. China
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, P.R. China
- Institute of Drug Research in Medicine Capital of China, Benxi 117000, P.R. China
| | - Yongxiang Liu
- Key Laboratory of Structure-Based Drug Design and Discovery (Shenyang Pharmaceutical University), Ministry of Education, Shenyang 110016, P.R. China
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, P.R. China
- Institute of Drug Research in Medicine Capital of China, Benxi 117000, P.R. China
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Ohtsuka N, Seki M, Hoshino Y, Honda K. Design and Synthesis of Optically Pure Dibenzo-difuso-azacentrotriquinacene-based Pseudo-C2-Symmetric Cyclic Hydroxamic Acid. CHEM LETT 2019. [DOI: 10.1246/cl.190592] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Naoya Ohtsuka
- Graduate School of Environment and Information Sciences, Yokohama National University, Tokiwadai, Hodogaya-ku, Yokohama, Kanagawa 240-8501, Japan
| | - Masato Seki
- Graduate School of Environment and Information Sciences, Yokohama National University, Tokiwadai, Hodogaya-ku, Yokohama, Kanagawa 240-8501, Japan
| | - Yujiro Hoshino
- Graduate School of Environment and Information Sciences, Yokohama National University, Tokiwadai, Hodogaya-ku, Yokohama, Kanagawa 240-8501, Japan
| | - Kiyoshi Honda
- Graduate School of Environment and Information Sciences, Yokohama National University, Tokiwadai, Hodogaya-ku, Yokohama, Kanagawa 240-8501, Japan
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Miao M, Jin M, Chen P, Wang L, Zhang S, Ren H. Iron(III)-Mediated Bicyclization of 1,2-Allenyl Aryl Ketones: Assembly of Indanone-Fused Polycyclic Scaffolds and Dibenzo[ a, e]pentalene Derivatives. Org Lett 2019; 21:5957-5961. [PMID: 31298027 DOI: 10.1021/acs.orglett.9b02079] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The rapid construction of three-dimensional fused carbocycles is a key challenge in synthetic chemistry. Herein, an unprecedented and practical tandem Nazarov/oxidative umpolung 4π-ring closure of readily available 1,2-allenyl aryl ketones mediated by iron(III) chloride has been developed, furnishing a new family of indanone-fused molecular architectures in moderate to excellent yields. The indanone-containing blocks can be efficiently converted to unsymmetrical dibenzo[a,e]pentalenes. Significantly, divergent synthetic applications have been achieved to provide densely functionalized polycyclic arrays.
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Affiliation(s)
- Maozhong Miao
- Department of Chemistry , Zhejiang Sci-Tech University , Hangzhou , Zhejiang 310018 , P. R. China
| | - Mengchao Jin
- Department of Chemistry , Zhejiang Sci-Tech University , Hangzhou , Zhejiang 310018 , P. R. China
| | - Panpan Chen
- Department of Chemistry , Zhejiang Sci-Tech University , Hangzhou , Zhejiang 310018 , P. R. China
| | - Lei Wang
- Department of Chemistry , Zhejiang Sci-Tech University , Hangzhou , Zhejiang 310018 , P. R. China
| | - Shouzhi Zhang
- Department of Chemistry , Zhejiang Sci-Tech University , Hangzhou , Zhejiang 310018 , P. R. China
| | - Hongjun Ren
- Department of Chemistry , Zhejiang Sci-Tech University , Hangzhou , Zhejiang 310018 , P. R. China
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Parker SF, Zhong L, Harig M, Kuck D. Spectroscopic characterisation of centropolyindanes. Phys Chem Chem Phys 2019; 21:4568-4577. [PMID: 30742151 DOI: 10.1039/c8cp07311b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
A highly promising class of three-dimensional polyaromatic hydrocarbons comprises the centropolyindanes. The characteristic feature of these compounds is the mutual fusion of several molecules of indane along the saturated C-C bonds of their cyclopentane rings. Among the polycyclic aromatic hydrocarbons, the centropolyindanes are special because of the saturated core of sp3-hybridised carbon atoms embedded in a three-dimensional environment of aromatic building blocks. While the centropolyindanes and their numerous derivatives have been studied in detail by NMR spectroscopy, mass spectrometry and X-ray diffraction, investigation of their vibrational features, and especially those of the neopentane core present in most cases, have not been performed so far. In the present paper, we report the first systematic study of a set of centropolyindanes by vibrational spectroscopy, using inelastic neutron scattering (INS), infrared and Raman spectroscopies.
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Affiliation(s)
- Stewart F Parker
- ISIS Facility, STFC Rutherford Appleton Laboratory, Chilton, Didcot, OX11 0QX, UK.
| | - Lisha Zhong
- Downing College, University of Cambridge, Regent Street, Cambridge, CB2 1DQ, UK
| | - Marco Harig
- Department of Chemistry and Center for Molecular Materials (CM2), Bielefeld University, 33615 Bielefeld, Germany
| | - Dietmar Kuck
- Department of Chemistry and Center for Molecular Materials (CM2), Bielefeld University, 33615 Bielefeld, Germany
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8
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Novak I. Structure and properties of some chiralanes and chirolanes. Mol Phys 2018. [DOI: 10.1080/00268976.2018.1434247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Igor Novak
- School of Agriculture and Wine Science, Charles Sturt University, Orange, NSW, Australia
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