1
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Taniguchi T, Agbo DO. Vibrational circular dichroism spectroscopy in the C-D, XY, and XYZ stretching region. Phys Chem Chem Phys 2023; 25:28567-28575. [PMID: 37861094 DOI: 10.1039/d3cp04287a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2023]
Abstract
Vibrational circular dichroism (VCD) spectroscopy is a powerful technique for structural analysis of chiral molecules, but information available from VCD spectra of large molecular systems can be limited by severe overlap of vibrational bands. While common chiral molecules do not absorb in the 1900-2400 cm-1 region, observation of VCD signals in this spectrally-isolated region is possible for molecules containing C-D, XY, and XYZ chromophores. Thus, a strategic introduction of these chromophores to a target molecule may produce VCD signals informative for molecular structures. VCD spectroscopy in the 1900-2400 cm-1 region is a rather unexplored research field and its basic properties remain to be investigated. This perspective article discusses insight obtained so far on the usefulness and physicochemical aspects of VCD spectroscopy in this region with briefly summarizing previous experimental VCD studies including classic examples as well as our recent results. We show that anharmonic effects such as overtones and combination bands often complicate VCD patterns. On the other hand, some molecules exhibit characteristic VCD signals that can be well interpreted by harmonic DFT spectral calculations for structural analysis. This article also discusses several examples of the use of this region for studying solute-solvent interactions and for VCD signal augmentation.
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Affiliation(s)
- Tohru Taniguchi
- Frontier Research Center for Advanced Material and Life Science, Faculty of Advanced Life Science, Hokkaido University, North 21 West 11, Sapporo 001-0021, Japan.
| | - Davidson Obinna Agbo
- Graduate School of Life Science, Hokkaido University, North 21 West 11, Sapporo 001-0021, Japan
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2
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Taniguchi T, Mutmainah, Takimoto S, Suzuki T, Watanabe S, Matsuda F, Umezawa T, Monde K. Scope and limitations of absolute configuration determination of allenic natural products using the CCC stretching VCD signal. Org Biomol Chem 2023; 21:569-574. [PMID: 36541676 DOI: 10.1039/d2ob01520j] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The allene functional group in natural products isolated so far exists in a non-racemic form, but its axial chirality is difficult to elucidate. Allenes exhibit a characteristic antisymmetric CCC stretching mode at around 1950 cm-1, and their VCD properties have not been studied in detail. This work, for the first time, applied VCD spectroscopy to allenic natural products and allenic molecules with other asymmetric centers focusing on the antisymmetric CCC stretching mode. This vibrational mode yielded a negligibly weak VCD signal for several molecules, but in the presence of electron-withdrawing and/or conjugating substituents, it generated a stronger one. Its sign was found to be influenced by the nature of substituents. These findings should deepen the understanding of the VCD properties of the allene functional group and should be useful for future studies of chiral allenes.
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Affiliation(s)
- Tohru Taniguchi
- Frontier Research Center for Advanced Material and Life Science, Faculty of Advanced Life Science, Hokkaido University, North 21 West 11, Sapporo 001-0021, Japan.
| | - Mutmainah
- Graduate School of Life Science, Hokkaido University, North 21 West 11, Sapporo 001-0021, Japan
| | - Shu Takimoto
- Graduate School of Life Science, Hokkaido University, North 21 West 11, Sapporo 001-0021, Japan
| | - Takahiro Suzuki
- Department of Chemistry, Faculty of Science, Hokkaido University, North 10 West 8, Sapporo 060-0810, Japan
| | - Soichiro Watanabe
- Graduate School of Chemical Sciences and Engineering, Hokkaido University, North 13 West 8, Sapporo 060-8628, Japan
| | - Fuyuhiko Matsuda
- Division of Environmental Materials Science, Graduate School of Environmental Science, Hokkaido University, North 10 West 5, Sapporo 060-0810, Japan
| | - Taiki Umezawa
- Division of Environmental Materials Science, Graduate School of Environmental Science, Hokkaido University, North 10 West 5, Sapporo 060-0810, Japan
| | - Kenji Monde
- Frontier Research Center for Advanced Material and Life Science, Faculty of Advanced Life Science, Hokkaido University, North 21 West 11, Sapporo 001-0021, Japan.
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3
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Ng JS, Hayashi T. Asymmetric Synthesis of Fluorinated Allenes by Rhodium‐Catalyzed Enantioselective Alkylation/Defluorination of Propargyl Difluorides with Alkylzincs. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202109290] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Jia Sheng Ng
- Division of Chemistry and Biological Chemistry School of Physical and Mathematical Sciences Nanyang Technological University 21 Nanyang Link Singapore 637371 Singapore
| | - Tamio Hayashi
- Department of Chemistry National Tsing-Hua University Hsinchu 30013 Taiwan
- Division of Chemistry and Biological Chemistry School of Physical and Mathematical Sciences Nanyang Technological University 21 Nanyang Link Singapore 637371 Singapore
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4
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García‐Ramos M, Cuetos A, Kroutil W, Grogan G, Lavandera I. The Reactivity of α‐Fluoroketones with PLP Dependent Enzymes: Transaminases as Hydrodefluorinases. ChemCatChem 2021. [DOI: 10.1002/cctc.202100901] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Marina García‐Ramos
- Organic and Inorganic Chemistry Department University of Oviedo Avenida Julián Clavería 8 33006 Oviedo Spain
| | - Aníbal Cuetos
- York Structural Biology Laboratory Department of Chemistry University of York Heslington York YO10 5DD UK
- ENANTIA C/ Baldiri Reixac, 10 08028 Barcelona Spain
| | - Wolfgang Kroutil
- Institute of Chemistry NAWI Graz Field of Excellence BioHealth University of Graz Heinrichstrasse 28 8010 Graz Austria
| | - Gideon Grogan
- York Structural Biology Laboratory Department of Chemistry University of York Heslington York YO10 5DD UK
| | - Iván Lavandera
- Organic and Inorganic Chemistry Department University of Oviedo Avenida Julián Clavería 8 33006 Oviedo Spain
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5
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Ng JS, Hayashi T. Asymmetric Synthesis of Fluorinated Allenes by Rhodium-Catalyzed Enantioselective Alkylation/Defluorination of Propargyl Difluorides with Alkylzincs. Angew Chem Int Ed Engl 2021; 60:20771-20775. [PMID: 34310834 DOI: 10.1002/anie.202109290] [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: 07/13/2021] [Indexed: 11/08/2022]
Abstract
The reaction of propargyl difluorides R1 CF2 C≡CR2 with alkylzincs R3 ZnCl giving axially chiral fluorinated allenes R1 FC=C=CR2 R3 with high enantioselectivity (up to 99 % ee) was found to be catalyzed by a chiral diene/rhodium complex. A key step in the catalytic cycle is selective elimination of one of the enantiotopic fluorides at the β-position of an alkenyl-Rh intermediate, which is generated by regioselective addition of R3 -Rh onto the triple bond of the starting difluorides.
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Affiliation(s)
- Jia Sheng Ng
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore
| | - Tamio Hayashi
- Department of Chemistry, National Tsing-Hua University, Hsinchu, 30013, Taiwan.,Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore
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6
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Luo H, Zhao Y, Wang D, Wang M, Shi Z. Stereoselective fluoroarylation of 1,1-difluoroallenes enabled by palladium catalysis. GREEN SYNTHESIS AND CATALYSIS 2020. [DOI: 10.1016/j.gresc.2020.08.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
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7
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Fuchibe K, Abe M, Sasaki M, Ichikawa J. Gold-catalyzed electrophilic activation of 1,1-difluoroallenes: α- and γ-selective addition of heteroatom nucleophiles. J Fluor Chem 2020. [DOI: 10.1016/j.jfluchem.2020.109452] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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8
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Fuchibe K, Watanabe S, Takao G, Ichikawa J. Synthesis of (difluoromethyl)naphthalenes using the ring construction strategy: C-C bond formation on the central carbon of 1,1-difluoroallenes via Pd-catalyzed insertion. Org Biomol Chem 2019; 17:5047-5054. [PMID: 31049538 DOI: 10.1039/c9ob00540d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The insertion of 1,1-difluoroallenes was carried out to form a C-C bond exclusively on their central carbon. o-Bromophenyl-bearing 1,1-difluoroallenes underwent intramolecular insertion in the presence of a palladium catalyst. Regioselective C-C bond formation occurred to form a six-membered carbocycle, leading to pharmaceutically and agrochemically promising difluoromethylated naphthalenes.
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Affiliation(s)
- Kohei Fuchibe
- Division of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan.
| | - Shumpei Watanabe
- Division of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan.
| | - Go Takao
- Division of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan.
| | - Junji Ichikawa
- Division of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan.
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9
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Fusè M, Egidi F, Bloino J. Vibrational circular dichroism under the quantum magnifying glass: from the electronic flow to the spectroscopic observable. Phys Chem Chem Phys 2019; 21:4224-4239. [DOI: 10.1039/c8cp06514d] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A chemically intuitive method to analyse and interpret vibrational circular dichroism spectra based on the vibrational transition current density.
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Affiliation(s)
- Marco Fusè
- Scuola Normale Superiore
- Piazza dei Cavalieri 7
- Pisa
- Italy
| | - Franco Egidi
- Scuola Normale Superiore
- Piazza dei Cavalieri 7
- Pisa
- Italy
| | - Julien Bloino
- Scuola Normale Superiore
- Piazza dei Cavalieri 7
- Pisa
- Italy
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10
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Song Y, Song S, Duan X, Wu X, Jiang F, Zhang Y, Fan J, Huang X, Fu C, Ma S. Copper-catalyzed radical approach to allenyl iodides. Chem Commun (Camb) 2019; 55:11774-11777. [DOI: 10.1039/c9cc05853b] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
A copper-catalyzed 1,4-addition reaction of arylsulfonyl iodides with 1,3-enynes afforded various allenyl halides in high yields under mild conditions via a radical mechanism.
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11
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12
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Garner MH, Hoffmann R, Rettrup S, Solomon GC. Coarctate and Möbius: The Helical Orbitals of Allene and Other Cumulenes. ACS CENTRAL SCIENCE 2018; 4:688-700. [PMID: 29974064 PMCID: PMC6026781 DOI: 10.1021/acscentsci.8b00086] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2018] [Indexed: 05/24/2023]
Abstract
As brought to the attention of the community by Hendon et al. and noted by previous workers, the π orbitals of the equilibrium geometry odd-carbon (even number of double bonds = n) [n]cumulenes may be written in either rectilinear or helical form. We trace the origins and detailed composition of the helical orbitals of cumulenes, which emerge in the simplest Hückel model and are not much modified in advanced computations. For the α,ω-disubstituted even [n]cumulenes, the helical representation is obligatory as the symmetry is reduced from D2d to C2. A relationship is apparent between these helical orbitals of the even [n]cumulenes, seen as a Herges coarctate system, and the corresponding Möbius cyclic polyene orbitals. The twist of the orbitals varies in interesting ways along the helix, and so does the contribution of the component atomic orbitals. Though the electronic structures of even [n]cumulenes and Möbius cyclopolyenes are closely related, they differ for higher n in intriguing ways; these are linked to the constrained rotation of the basis orbitals along the helical twist itinerary. Relations are constructed between the level patterns of the π-systems of even [n]cumulenes and ideas of Hückel and Möbius aromaticity.
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Affiliation(s)
- Marc H. Garner
- Department of Chemistry and Nano-Science Center, University
of Copenhagen, Universitetsparken
5, DK-2100, Copenhagen
Ø, Denmark
- Department
of Chemistry and Chemical Biology, Cornell
University, Ithaca, New York 4850, United
States
| | - Roald Hoffmann
- Department
of Chemistry and Chemical Biology, Cornell
University, Ithaca, New York 4850, United
States
| | - Sten Rettrup
- Department of Chemistry and Nano-Science Center, University
of Copenhagen, Universitetsparken
5, DK-2100, Copenhagen
Ø, Denmark
| | - Gemma C. Solomon
- Department of Chemistry and Nano-Science Center, University
of Copenhagen, Universitetsparken
5, DK-2100, Copenhagen
Ø, Denmark
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13
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Krahl T, Kemnitz E. Aluminium fluoride – the strongest solid Lewis acid: structure and reactivity. Catal Sci Technol 2017. [DOI: 10.1039/c6cy02369j] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Highly Lewis acidic aluminium fluorides are interesting heterogeneous catalysts for many reactions, especially C–H and C–F bonds can be activated at room temperature.
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Affiliation(s)
- Thoralf Krahl
- Humboldt-Universität zu Berlin
- D-12489 Berlin
- Germany
- Nanofluor GmbH
- D-12489 Berlin
| | - Erhard Kemnitz
- Humboldt-Universität zu Berlin
- D-12489 Berlin
- Germany
- Nanofluor GmbH
- D-12489 Berlin
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14
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Kojima R, Kubota K, Ito H. Stereodivergent hydrodefluorination of gem-difluoroalkenes: selective synthesis of (Z)- and (E)-monofluoroalkenes. Chem Commun (Camb) 2017; 53:10688-10691. [DOI: 10.1039/c7cc05225a] [Citation(s) in RCA: 83] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We have developed a novel approach for the stereodivergent hydrodefluorination of gem-difluoroalkenes using copper(i) catalysts to obtain stereodefined monofluoroalkenes. Both (Z)- and (E)-terminal monofluoroalkenes were obtained by hydrodefluorination of gem-difluoroalkenes in the presence of copper(i) catalysts and diboron or hydrosilane, respectively, with high stereoselectivity. DFT calculations were conducted to elucidate the stereoselectivity.
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Affiliation(s)
- Ryoto Kojima
- Division of Applied Chemistry and Frontier Chemistry Center
- Graduate School of Engineering
- Hokkaido University
- Sapporo 060-8628
- Japan
| | - Koji Kubota
- Division of Applied Chemistry and Frontier Chemistry Center
- Graduate School of Engineering
- Hokkaido University
- Sapporo 060-8628
- Japan
| | - Hajime Ito
- Division of Applied Chemistry and Frontier Chemistry Center
- Graduate School of Engineering
- Hokkaido University
- Sapporo 060-8628
- Japan
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15
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Merten C. Vibrational optical activity as probe for intermolecular interactions. Phys Chem Chem Phys 2017; 19:18803-18812. [DOI: 10.1039/c7cp02544k] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A detailed VCD spectroscopic analysis of well-selected chiral model systems can give valuable and unprecedented insights into intermolecular interactions such as solvation or reactant–substrate binding in catalysis.
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16
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Competition of Nucleophilic Aromatic Substitution, σ-Bond Metathesis, and syn
Hydrometalation in Titanium(III)-Catalyzed Hydrodefluorination of Arenes. Chem Asian J 2016; 11:3062-3071. [DOI: 10.1002/asia.201601036] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Indexed: 11/07/2022]
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17
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Baumgarth H, Meier G, Braun T, Braun‐Cula B. Rhodium and Iridium Fluorido and Bifluorido Complexes Derived from Peroxido Precursors. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201600682] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Hanna Baumgarth
- Humboldt‐Universität zu BerlinDepartment of ChemistryBrook‐Taylor‐Straße 212489BerlinGermany
| | - Gregor Meier
- Humboldt‐Universität zu BerlinDepartment of ChemistryBrook‐Taylor‐Straße 212489BerlinGermany
| | - Thomas Braun
- Humboldt‐Universität zu BerlinDepartment of ChemistryBrook‐Taylor‐Straße 212489BerlinGermany
| | - Beatrice Braun‐Cula
- Humboldt‐Universität zu BerlinDepartment of ChemistryBrook‐Taylor‐Straße 212489BerlinGermany
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18
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Ahrens T, Ahrens M, Braun T, Braun B, Herrmann R. Synthesis of a rhodium(i) germyl complex: a useful tool for C–H and C–F bond activation reactions. Dalton Trans 2016; 45:4716-28. [DOI: 10.1039/c5dt04845a] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The rhodium(i) germyl complex [Rh(GePh3)(PEt3)3] is a useful tool for C–F and C–H bond activation reactions. For instance, treatment with hexafluoropropene results in the formation of two isomeric C–F activation products [Rh{(E)-CFCF(CF3)}(PEt3)3] and [Rh{(Z)-CFCF(CF3)}(PEt3)3] in a 3 : 1 ratio.
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Affiliation(s)
- Theresia Ahrens
- Humboldt-Universität zu Berlin
- Department of Chemistry
- D-12489 Berlin
- Germany
| | - Mike Ahrens
- Humboldt-Universität zu Berlin
- Department of Chemistry
- D-12489 Berlin
- Germany
| | - Thomas Braun
- Humboldt-Universität zu Berlin
- Department of Chemistry
- D-12489 Berlin
- Germany
| | - Beatrice Braun
- Humboldt-Universität zu Berlin
- Department of Chemistry
- D-12489 Berlin
- Germany
| | - Roy Herrmann
- Humboldt-Universität zu Berlin
- Department of Chemistry
- D-12489 Berlin
- Germany
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19
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Ahrens T, Teltewskoi M, Ahrens M, Braun T, Laubenstein R. Competing reaction pathways of 3,3,3-trifluoropropene at rhodium hydrido, silyl and germyl complexes: C–F bond activation versus hydrogermylation. Dalton Trans 2016; 45:17495-17507. [DOI: 10.1039/c6dt03027k] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The reactivity of the Rh complexes [Rh(L)(PEt3)3] (L = H, Si(OEt)3, GePh3) towards CH2CHCF3 was investigated which involve C–F bond activation and germylation reactions.
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Affiliation(s)
- Theresia Ahrens
- Humboldt-Universität zu Berlin
- Department of Chemistry
- D-12489 Berlin
- Germany
| | - Michael Teltewskoi
- Humboldt-Universität zu Berlin
- Department of Chemistry
- D-12489 Berlin
- Germany
| | - Mike Ahrens
- Humboldt-Universität zu Berlin
- Department of Chemistry
- D-12489 Berlin
- Germany
| | - Thomas Braun
- Humboldt-Universität zu Berlin
- Department of Chemistry
- D-12489 Berlin
- Germany
| | - Reik Laubenstein
- Humboldt-Universität zu Berlin
- Department of Chemistry
- D-12489 Berlin
- Germany
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20
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Krüger J, Ehm C, Lentz D. Improving selectivity in catalytic hydrodefluorination by limiting SNV reactivity. Dalton Trans 2016; 45:16789-16798. [DOI: 10.1039/c6dt02961b] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Competition of HM, SBM and SNV in hydrodefluorination can lead to low selectivity which can be improved via solvent change.
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Affiliation(s)
- Juliane Krüger
- Institut für Chemie und Biochemie
- Anorganische Chemie
- Freie Universität Berlin
- 14195 Berlin
- Germany
| | - Christian Ehm
- Dipartimento di Scienze Chimiche
- Università di Napoli Federico II
- 80126 Napoli
- Italy
| | - Dieter Lentz
- Institut für Chemie und Biochemie
- Anorganische Chemie
- Freie Universität Berlin
- 14195 Berlin
- Germany
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21
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Li L, Miao H, Ding Y. Iridium and phosphine promoted C–F bond activation: the C–S cross-coupling of aryl fluorides with diaryl disulfides to synthesize thioethers. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.09.133] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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22
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Wu J, Xiao J, Dai W, Cao S. Synthesis of monofluoroalkenes through selective hydrodefluorination of gem-difluoroalkenes with Red-Al®. RSC Adv 2015. [DOI: 10.1039/c5ra04221f] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A practical approach for the selective hydrodefluorination of gem-difluoroalkenes using Red-Al® as reductant at room temperature in CH2Cl2 was reported. Monofluoroalkenes were obtained in moderate to high yields with good E-selectivity.
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Affiliation(s)
- Jingjing Wu
- School of Chemical and Environmental Engineering
- Shanghai Institute of Technology (SIT)
- Shanghai 201418
- China
- Key Laboratory of Organofluorine Chemistry
| | - Juan Xiao
- Shanghai Key Laboratory of Chemical Biology
- School of Pharmacy
- East China University of Science and Technology (ECUST)
- Shanghai 200237
- China
| | - Wenpeng Dai
- Shanghai Key Laboratory of Chemical Biology
- School of Pharmacy
- East China University of Science and Technology (ECUST)
- Shanghai 200237
- China
| | - Song Cao
- Shanghai Key Laboratory of Chemical Biology
- School of Pharmacy
- East China University of Science and Technology (ECUST)
- Shanghai 200237
- China
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23
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Garbacz P, Cukras J, Jaszuński M. A theoretical study of potentially observable chirality-sensitive NMR effects in molecules. Phys Chem Chem Phys 2015. [DOI: 10.1039/c5cp02870a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Derivatives of fluorocyclopropene have large antisymmetric parts of the fluorine nucleus shielding tensor, thus they are promising molecules for direct determination of chirality by NMR analysis.
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Affiliation(s)
- Piotr Garbacz
- Laboratoire National des Champs Magnétiques Intenses
- LNCMI – CNRS
- EMFL
- UJF-UPS-INSA
- 38042 Grenoble Cedex 9
| | - Janusz Cukras
- Faculty of Chemistry
- University of Warsaw
- 02-093 Warszawa
- Poland
| | - Michał Jaszuński
- Institute of Organic Chemistry
- Polish Academy of Sciences
- 01-224 Warsaw
- Poland
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24
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Ahrens T, Kohlmann J, Ahrens M, Braun T. Functionalization of fluorinated molecules by transition-metal-mediated C-F bond activation to access fluorinated building blocks. Chem Rev 2014; 115:931-72. [PMID: 25347593 DOI: 10.1021/cr500257c] [Citation(s) in RCA: 610] [Impact Index Per Article: 61.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Theresia Ahrens
- Humboldt-Universität zu Berlin , Department of Chemistry, Brook-Taylor-Straße 2, 12489 Berlin, Germany
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25
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Ohashi M, Shibata M, Ogoshi S. Regioselective CF Bond Activation of Hexafluoropropylene on Palladium(0): Formation of a Cationic η2-Perfluoroallylpalladium Complex. Angew Chem Int Ed Engl 2014; 53:13578-82. [DOI: 10.1002/anie.201408467] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2014] [Indexed: 11/11/2022]
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26
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Ohashi M, Shibata M, Ogoshi S. Regioselective CF Bond Activation of Hexafluoropropylene on Palladium(0): Formation of a Cationic η2-Perfluoroallylpalladium Complex. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201408467] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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27
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Fuchibe K, Mayumi Y, Yokota M, Aihara H, Ichikawa J. Indium(III)-Catalyzed Cationic Cyclization of 1,1-Difluoroallenes: Regioselective Synthesis of 1-Fluoronaphthalenes. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2014. [DOI: 10.1246/bcsj.20140128] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Kohei Fuchibe
- Division of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba
| | - Yuka Mayumi
- Division of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba
| | - Misaki Yokota
- Division of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba
| | - Hiromichi Aihara
- Division of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba
| | - Junji Ichikawa
- Division of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba
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Rettenmeier C, Wadepohl H, Gade LH. Stereoselective Hydrodehalogenation via a Radical-Based Mechanism Involving T-Shaped Chiral Nickel(I) Pincer Complexes. Chemistry 2014; 20:9657-65. [DOI: 10.1002/chem.201403243] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2014] [Indexed: 11/12/2022]
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29
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Zámostná L, Ahrens M, Braun T. Catalytic hydrodefluorination of fluoroaromatics with silanes as hydrogen source at a binuclear rhodium complex: Characterization of key intermediates. J Fluor Chem 2013. [DOI: 10.1016/j.jfluchem.2013.05.021] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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30
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Ohashi M, Shibata M, Saijo H, Kambara T, Ogoshi S. Carbon–Fluorine Bond Activation of Tetrafluoroethylene on Palladium(0) and Nickel(0): Heat or Lewis Acidic Additive Promoted Oxidative Addition. Organometallics 2013. [DOI: 10.1021/om400255t] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Masato Ohashi
- Department
of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Mitsutoshi Shibata
- Department
of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Hiroki Saijo
- Department
of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Tadashi Kambara
- Department
of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Sensuke Ogoshi
- Department
of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
- JST, Advanced
Catalytic Transformation program for Carbon utilization
(ACT-C), Suita, Osaka 565-0871, Japan
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Affiliation(s)
- Annette D. Allen
- Department of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada
| | - Thomas T. Tidwell
- Department of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada
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32
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Fuchibe K, Mayumi Y, Zhao N, Watanabe S, Yokota M, Ichikawa J. Domino Synthesis of Fluorine-Substituted Polycyclic Aromatic Hydrocarbons: 1,1-Difluoroallenes as Synthetic Platforms. Angew Chem Int Ed Engl 2013; 52:7825-8. [DOI: 10.1002/anie.201302740] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2013] [Indexed: 11/06/2022]
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33
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Fuchibe K, Mayumi Y, Zhao N, Watanabe S, Yokota M, Ichikawa J. Domino Synthesis of Fluorine-Substituted Polycyclic Aromatic Hydrocarbons: 1,1-Difluoroallenes as Synthetic Platforms. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201302740] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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34
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Ahrens M, Scholz G, Braun T, Kemnitz E. Catalytic Hydrodefluorination of Fluoromethanes at Room Temperature by Silylium-ion-like Surface Species. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201300608] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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35
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Ahrens M, Scholz G, Braun T, Kemnitz E. Catalytic Hydrodefluorination of Fluoromethanes at Room Temperature by Silylium-ion-like Surface Species. Angew Chem Int Ed Engl 2013; 52:5328-32. [DOI: 10.1002/anie.201300608] [Citation(s) in RCA: 91] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2013] [Revised: 02/22/2013] [Indexed: 11/08/2022]
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36
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37
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Kuehnel MF, Lentz D, Braun T. Synthesis of Fluorinated Building Blocks by Transition-Metal-Mediated Hydrodefluorination Reactions. Angew Chem Int Ed Engl 2013; 52:3328-48. [DOI: 10.1002/anie.201205260] [Citation(s) in RCA: 313] [Impact Index Per Article: 28.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2012] [Indexed: 11/06/2022]
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38
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Kuehnel MF, Lentz D, Braun T. Synthese fluorierter Bausteine durch Übergangsmetall-vermittelte Hydrodefluorierungsreaktionen. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201205260] [Citation(s) in RCA: 117] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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39
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Fuchibe K, Ueda M, Yokota M, Ichikawa J. γ-Selective Addition to 1,1-Difluoroallenes: Three-component Coupling Leading to 2,2-Disubstituted 1,1-Difluoroalkenes. CHEM LETT 2012. [DOI: 10.1246/cl.2012.1619] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Kohei Fuchibe
- Division of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba
| | - Mikiko Ueda
- Division of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba
| | - Misaki Yokota
- Division of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba
| | - Junji Ichikawa
- Division of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba
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40
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Kuehnel MF, Holstein P, Kliche M, Krüger J, Matthies S, Nitsch D, Schutt J, Sparenberg M, Lentz D. Titanium-Catalyzed Vinylic and Allylic CF Bond Activation-Scope, Limitations and Mechanistic Insight. Chemistry 2012; 18:10701-14. [DOI: 10.1002/chem.201201125] [Citation(s) in RCA: 79] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2012] [Indexed: 11/09/2022]
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