1
|
Aota N, Nakagawa R, de Sousa LE, Tohnai N, Minakata S, de Silva P, Takeda Y. Anion-Responsive Colorimetric and Fluorometric Red-Shift in Triarylborane Derivatives: Dual Role of Phenazaborine as Lewis Acid and Electron Donor. Angew Chem Int Ed Engl 2024:e202405158. [PMID: 38587303 DOI: 10.1002/anie.202405158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2024] [Revised: 04/07/2024] [Accepted: 04/08/2024] [Indexed: 04/09/2024]
Abstract
Photophysical modulation of triarylboranes (TABs) through Lewis acid-base interactions is a fundamental approach for sensing anions. Yet, design principles for anion-responsive TABs displaying significant red-shift in absorption and photoluminescence (PL) have remained elusive. Herein, a new strategy for modulating the photophysical properties of TABs in a red-shift mode has been presented, by using a nitrogen-bridged triarylborane (1,4-phenazaborine: PAzB) with a contradictory dual role as a Lewis acid and an electron donor. Following the strategy, PAzB derivatives connected with an electron-deficient azaaromatic have been developed, and these compounds display a distinct red-shift in their absorption and PL in response to an anion. Spectroscopic analyses and quantum chemical calculations have revealed the formation of a tetracoordinate borate upon the addition of fluoride, narrowing the HOMO-LUMO gap and enhancing the charge-transfer character in the excited state. This approach has also been demonstrated in modulating the photophysical properties of solid-state films.
Collapse
Affiliation(s)
- Nae Aota
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan
| | - Riku Nakagawa
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan
| | - Leonardo Evaristo de Sousa
- Department of Energy Conversion and Storage, Technical University of Denmark, Anker Engelunds Vej 301, 2800, Kongens Lyngby, Denmark
| | - Norimitsu Tohnai
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan
| | - Satoshi Minakata
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan
| | - Piotr de Silva
- Department of Energy Conversion and Storage, Technical University of Denmark, Anker Engelunds Vej 301, 2800, Kongens Lyngby, Denmark
| | - Youhei Takeda
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan
| |
Collapse
|
2
|
Enjou T, Goto S, Liu Q, Ishiwari F, Saeki A, Uematsu T, Ikemoto Y, Watanabe S, Matsuba G, Ishibashi K, Watanabe G, Minakata S, Sagara Y, Takeda Y. Correction: Water-dispersible donor-acceptor-donor π-conjugated bolaamphiphiles enabling a humidity-responsive luminescence color change. Chem Commun (Camb) 2024; 60:3862. [PMID: 38526752 DOI: 10.1039/d4cc90105c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/27/2024]
Abstract
Correction for 'Water-dispersible donor-acceptor-donor π-conjugated bolaamphiphiles enabling a humidity-responsive luminescence color change' by Tomoya Enjou et al., Chem. Commun., 2024, https://doi.org/10.1039/d3cc05749f.
Collapse
Affiliation(s)
- Tomoya Enjou
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan.
| | - Shimpei Goto
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan.
| | - Qiming Liu
- Department of Materials Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Fumitaka Ishiwari
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan.
- Frontier Research Base for Global Young Researchers, Graduate School of Engineering, Osaka University, Suita 565-0871, Japan
- PRESTO, Japan Science and Technology Agency (JST), Kawaguchi, Saitama 332-0012, Japan
- Innovative Catalysis Science Division, Institute for Open and Transdisciplinary Research Initiatives (ICS-OTRI), Osaka University, Yamadaoka 1-1, Suita, Osaka 565-0871, Japan
| | - Akinori Saeki
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan.
- Innovative Catalysis Science Division, Institute for Open and Transdisciplinary Research Initiatives (ICS-OTRI), Osaka University, Yamadaoka 1-1, Suita, Osaka 565-0871, Japan
| | - Taro Uematsu
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan.
| | - Yuka Ikemoto
- Japan Synchrotron Radiation Research Institute (JASRI) SPring-8, 1-1-1 Koto, Sayo, Hyogo 679-5198, Japan
| | - Sora Watanabe
- Graduate School of Organic Materials Science, Yamagata University, Yonezawa, Yamagata 992-8510, Japan
| | - Go Matsuba
- Graduate School of Organic Materials Science, Yamagata University, Yonezawa, Yamagata 992-8510, Japan
| | - Kouichiro Ishibashi
- Department of Physics, School of Science, Kitasato University, 1-15-1 Kitazato, Minami-ku, Sagamihara, Kanagawa 252-0373, Japan
| | - Go Watanabe
- Department of Physics, School of Science, Kitasato University, 1-15-1 Kitazato, Minami-ku, Sagamihara, Kanagawa 252-0373, Japan
- Department of Data Science, School of Frontier Engineering, Kitasato University, 1-15-1 Kitazato, Minato-ku, Sagamihara, Kanagawa 252-0373, Japan
- Kanagawa Institute of Industrial Science and Technology (KISTEC), 705-1 Shimoimaizumi, Ebina, Kanagawa 243-0435, Japan
| | - Satoshi Minakata
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan.
| | - Yoshimitsu Sagara
- Department of Materials Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
- Living Systems Materialogy (LiSM) Research Group, International Research Frontiers Initiative (IRFI), Tokyo Institute of Technology, 4259 Nagatsuda-cho, Midori-ku, Yokohama, Kanagawa 226-8503, Japan
| | - Youhei Takeda
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan.
| |
Collapse
|
3
|
Enjou T, Goto S, Liu Q, Ishiwari F, Saeki A, Uemtasu T, Ikemoto Y, Watanabe S, Matsuba G, Ishibashi K, Watanabe G, Minakata S, Sagara Y, Takeda Y. Water-dispersible donor-acceptor-donor π-conjugated bolaamphiphiles enabling a humidity-responsive luminescence color change. Chem Commun (Camb) 2024; 60:3653-3656. [PMID: 38488046 DOI: 10.1039/d3cc05749f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/26/2024]
Abstract
Novel water-dispersible donor-acceptor-donor π-conjugated bolaamphiphiles, having dibenzophenazine as the acceptor and heteroatom-bridged amphiphilic diarylamines as the donors, have been developed. The materials displayed a distinct photoluminescence color change in response to humidity in a poly(vinylalcohol) matrix.
Collapse
Affiliation(s)
- Tomoya Enjou
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan.
| | - Shimpei Goto
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan.
| | - Qiming Liu
- Department of Materials Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Fumitaka Ishiwari
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan.
- Frontier Research Base for Global Young Researchers, Graduate School of Engineering, Osaka University, Suita 565-0871, Japan
- PRESTO, Japan Science and Technology Agency (JST), Kawaguchi, Saitama 332-0012, Japan
- Innovative Catalysis Science Division, Institute for Open and Transdisciplinary Research Initiatives (ICS-OTRI), Osaka University, Yamadaoka 1-1, Suita, Osaka 565-0871, Japan
| | - Akinori Saeki
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan.
- Innovative Catalysis Science Division, Institute for Open and Transdisciplinary Research Initiatives (ICS-OTRI), Osaka University, Yamadaoka 1-1, Suita, Osaka 565-0871, Japan
| | - Taro Uemtasu
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan.
| | - Yuka Ikemoto
- Japan Synchrotron Radiation Research Institute (JASRI) SPring-8, 1-1-1 Koto, Sayo, Hyogo 679-5198, Japan
| | - Sora Watanabe
- Graduate School of Organic Materials Science, Yamagata University, Yonezawa, Yamagata 992-8510, Japan
| | - Go Matsuba
- Graduate School of Organic Materials Science, Yamagata University, Yonezawa, Yamagata 992-8510, Japan
| | - Kouichiro Ishibashi
- Department of Physics, School of Science, Kitasato University, 1-15-1 Kitazato, Minami-ku, Sagamihara, Kanagawa 252-0373, Japan
| | - Go Watanabe
- Department of Physics, School of Science, Kitasato University, 1-15-1 Kitazato, Minami-ku, Sagamihara, Kanagawa 252-0373, Japan
- Department of Data Science, School of Frontier Engineering, Kitasato University, 1-15-1 Kitazato, Minato-ku, Sagamihara, Kanagawa 252-0373, Japan
- Kanagawa Institute of Industrial Science and Technology (KISTEC), 705-1 Shimoimaizumi, Ebina, Kanagawa 243-0435, Japan
| | - Satoshi Minakata
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan.
| | - Yoshimitsu Sagara
- Department of Materials Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
- Living Systems Materialogy (LiSM) Research Group, International Research Frontiers Initiative (IRFI), Tokyo Institute of Technology, 4259 Nagatsuda-cho, Midori-ku, Yokohama, Kanagawa 226-8503, Japan
| | - Youhei Takeda
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan.
| |
Collapse
|
4
|
Kiyokawa K, Kawanaka K, Minakata S. Amino-λ 3 -iodane-Enabled Electrophilic Amination of Arylboronic Acid Derivatives. Angew Chem Int Ed Engl 2024; 63:e202319048. [PMID: 38272833 DOI: 10.1002/anie.202319048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Revised: 01/17/2024] [Accepted: 01/25/2024] [Indexed: 01/27/2024]
Abstract
In this report, we describe the use of amino-λ3 -iodanes in the electrophilic amination of arylboronic acids and boronates. Iodine(III) reagents with transferable amino groups, including one with an NH2 group, were synthesized and used in the amination, allowing the synthesis of a wide range of primary and secondary (hetero)arylamines. Mechanistic studies by DFT calculations indicate that the reaction proceeds through an electrophilic amination process from a tetravalent borate complex with a B-N dative bond.
Collapse
Affiliation(s)
- Kensuke Kiyokawa
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan
| | - Kazuki Kawanaka
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan
| | - Satoshi Minakata
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan
| |
Collapse
|
5
|
Okumatsu D, Kiyokawa K, Bao Nguyen LT, Abe M, Minakata S. Photoexcitation of (diarylmethylene)amino benziodoxolones for alkylamination of styrene derivatives with carboxylic acids. Chem Sci 2024; 15:1068-1076. [PMID: 38239691 PMCID: PMC10793594 DOI: 10.1039/d3sc06090j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Accepted: 12/12/2023] [Indexed: 01/22/2024] Open
Abstract
The alkylamination of alkenes using pristine carboxylic acids was achieved by the photoexcitation of (diarylmethylene)amino benziodoxolones (DABXs), which serve as both an oxidant and an aminating reagent (an iminyl radical precursor). The developed method is a simple photochemical reaction without the need for external photosensitizers and shows a broad substrate scope for aliphatic carboxylic acids leading to the formation of primary, secondary, and tertiary alkyl radicals, thus enabling the facile synthesis of various structurally complex amines. Mechanistic investigations including transient absorption spectroscopy measurements using a laser flash photolysis (LFP) method disclosed the unique photochemical reactivity of DABXs, which undergoes homolysis of their I-N bonds to give an iminyl radical and ortho-iodobenzoyloxy radical, the latter of which participates in the single-electron oxidation of carboxylates.
Collapse
Affiliation(s)
- Daichi Okumatsu
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University Yamadaoka 2-1 Suita Osaka 565-0871 Japan
| | - Kensuke Kiyokawa
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University Yamadaoka 2-1 Suita Osaka 565-0871 Japan
| | - Linh Tran Bao Nguyen
- Department of Chemistry, Graduate School of Advanced Science and Engineering, Hiroshima University Kagamiyama 1-3-1 Higashi-hiroshima Hiroshima 739-8526 Japan
| | - Manabu Abe
- Department of Chemistry, Graduate School of Advanced Science and Engineering, Hiroshima University Kagamiyama 1-3-1 Higashi-hiroshima Hiroshima 739-8526 Japan
| | - Satoshi Minakata
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University Yamadaoka 2-1 Suita Osaka 565-0871 Japan
| |
Collapse
|
6
|
Sun K, Li D, Kaihara T, Minakata S, Takeda Y, Kawai S. On-surface synthesis of nitrogen-doped nanographene with an [18]annulene pore on Ag(111). Commun Chem 2023; 6:228. [PMID: 37863965 PMCID: PMC10589310 DOI: 10.1038/s42004-023-01023-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Accepted: 10/06/2023] [Indexed: 10/22/2023] Open
Abstract
On-surface synthesis is of importance to fabricate low dimensional carbon-based nanomaterials with atomic precision. Here, we synthesize nitrogen-doped nanographene with an [18]annulene pore and its dimer through sequential reactions of debromination, aryl-aryl coupling, cyclodehydrogenation and C-N coupling on Ag(111) from 3,12-dibromo-7,8-diaza[5]helicene. The inner structures of the products were characterized with scanning tunneling microscopy with a CO terminated tip at low temperature. Furthermore, the first four unoccupied electronic states of the nanographene were investigated with a combination of scanning tunneling spectroscopy and theoretical calculations. Except for the LUMO + 2 state observed at +1.3 V, the electronic states at 500 mV, 750 mV and 1.9 V were attributed to the superatom molecular orbitals at the [18]annulene pore, which were significantly shifted towards the Fermi level due to the hybridization with the confined surface state.
Collapse
Affiliation(s)
- Kewei Sun
- International Center for Young Scientists, National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki, 305-0047, Japan
| | - Donglin Li
- Center for Basic Research on Materials, National Institute for Materials Science, 1-2-1 Segen, Tsukuba, Ibaraki, 305-0047, Japan
| | - Takahito Kaihara
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka, 565-0871, Japan
| | - Satoshi Minakata
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka, 565-0871, Japan
| | - Youhei Takeda
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka, 565-0871, Japan.
| | - Shigeki Kawai
- Center for Basic Research on Materials, National Institute for Materials Science, 1-2-1 Segen, Tsukuba, Ibaraki, 305-0047, Japan.
- Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba, 305-8571, Japan.
| |
Collapse
|
7
|
Thom KA, Nolden O, Weingart O, Izumi S, Minakata S, Takeda Y, Gilch P. Femtosecond Spectroscopy on a Dibenzophenazine-Cored Macrocycle Exhibiting Thermally Activated Delayed Fluorescence. ChemistryOpen 2023; 12:e202300026. [PMID: 37098884 PMCID: PMC10152888 DOI: 10.1002/open.202300026] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 03/13/2023] [Accepted: 03/23/2023] [Indexed: 04/27/2023] Open
Abstract
The photophysics of a thermally activated delayed fluorescence (TADF) emitting macrocycle consisting of two dibenzo[a,j]phenazine acceptor moieties bridged by two N,N,N',N'-tetraphenylene-1,4-diamine donor units was scrutinized in solution by steady-state and time-resolved spectroscopy. The fluorescence lifetime of the compound proved to be strongly solvent-dependent. It ranges from 6.3 ns in cyclohexane to 34 ps in dimethyl sulfoxide. In polar solvents the fluorescence decay is predominantly due to internal conversion. In non-polar ones radiative decay and intersystem crossing contribute. Contrary to the behaviour in polymer matrices (S. Izumi et al., J. Am. Chem. Soc. 2020, 142, 1482) the excited state decay is not predominantly due to prompt and delayed fluorescence. The solvent-dependent behaviour is analyzed with the aid of quantum chemical computations.
Collapse
Affiliation(s)
- Kristoffer A Thom
- Institut für Physikalische Chemie, Heinrich-Heine-Universität Düsseldorf, Universitätsstr. 1, 40225, Düsseldorf, Germany
- Present Address: Currenta GmbH & Co. OHG, Kaiser-Wilhelm-Allee 80, 51373, Leverkusen, Germany
| | - Oliver Nolden
- Institut für Physikalische Chemie, Heinrich-Heine-Universität Düsseldorf, Universitätsstr. 1, 40225, Düsseldorf, Germany
| | - Oliver Weingart
- Institut für Theoretische Chemie und Computerchemie, Heinrich-Heine-Universität Düsseldorf, Universitätsstr. 1, 40225, Düsseldorf, Germany
| | - Saika Izumi
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka, 565-0871, Japan
| | - Satoshi Minakata
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka, 565-0871, Japan
| | - Youhei Takeda
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka, 565-0871, Japan
| | - Peter Gilch
- Institut für Physikalische Chemie, Heinrich-Heine-Universität Düsseldorf, Universitätsstr. 1, 40225, Düsseldorf, Germany
| |
Collapse
|
8
|
Kiyokawa K, Noguchi I, Nagata T, Minakata S. Tris(pentafluorophenyl)borane-Catalyzed Stereospecific Bromocyanation of Styrene Derivatives with Cyanogen Bromide. Org Lett 2023; 25:2537-2542. [PMID: 36971409 DOI: 10.1021/acs.orglett.3c00727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/29/2023]
Abstract
We, herein, report on the bromocyanation of styrene derivatives with cyanogen bromide in the presence of tris(pentafluorophenyl)borane which functions as a Lewis acid catalyst that can effectively activate cyanogen bromide. This reaction proceeds through a stereospecific syn-addition. The protocol is operationally simple and provides practical access to β-bromonitriles.
Collapse
|
9
|
Kiyokawa K, Ishizuka M, Minakata S. Stereospecific Oxycyanation of Alkenes with Sulfonyl Cyanide. Angew Chem Int Ed Engl 2023; 62:e202218743. [PMID: 36702752 DOI: 10.1002/anie.202218743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 01/25/2023] [Accepted: 01/26/2023] [Indexed: 01/28/2023]
Abstract
Oxycyanation of alkenes would allow the direct construction of useful β-hydroxy nitrile scaffolds. However, only limited examples of such reactions have been reported, and some problems including limited substrate scope and the lack of diastereocontrol in the case of the oxycyanation of internal alkenes have arisen. We herein report on the intermolecular oxycyanation of alkenes using p-toluenesulfonyl cyanide (TsCN) in the presence of tris(pentafluorophenyl)borane (B(C6 F5 )3 ) as a catalyst, affording products that contain a sulfinyloxy group and a cyano group at the vicinal position. The reaction features a stereospecific syn-addition. The reaction also shows a broad substrate scope with good functional group tolerance. Mechanistic investigations by experimental studies and density functional theory (DFT) calculations revealed that the reaction proceeds via an unprecedented stereospecific mechanism through the electrophilic cyanation of alkenes, in which B(C6 F5 )3 efficiently activates TsCN through the coordination of the cyano group to the boron center.
Collapse
Affiliation(s)
- Kensuke Kiyokawa
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka, 565-0871, Japan
| | - Miu Ishizuka
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka, 565-0871, Japan
| | - Satoshi Minakata
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka, 565-0871, Japan
| |
Collapse
|
10
|
Izumi S, Inoue K, Nitta Y, Enjou T, Ami T, Oka K, Tohnai N, Minakata S, Fukushima T, Ishiwari F, Takeda Y. 3,11-Diaminodibenzo[a,j]phenazine: Synthesis, Properties, and Applications to Tröger's Base-Forming Ladder Polymerization. Chemistry 2023; 29:e202202702. [PMID: 36520052 DOI: 10.1002/chem.202202702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 12/15/2022] [Accepted: 12/15/2022] [Indexed: 12/23/2022]
Abstract
A new class of diamino-substituted π-extended phenazine compound was synthesized, and its photophysical properties were investigated. The U-shaped diaminophenazine displayed photoluminescence in solution with moderate quantum yield. The diamino aromatic compound was found applicable to the poly-condensation with formaldehyde to form Tröger's base ladder polymer. The obtained microporous ladder polymer features high CO2 adsorption selectivity against N2 , most likely due to the presence of basic nitrogen atoms in the phenazine rings.
Collapse
Affiliation(s)
- Saika Izumi
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka, 565-0871, Japan
| | - Keiki Inoue
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, Yokohama, 226-8503, Japan
| | - Yuya Nitta
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka, 565-0871, Japan
| | - Tomoya Enjou
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka, 565-0871, Japan
| | - Takahiro Ami
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka, 565-0871, Japan
| | - Kouki Oka
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka, 565-0871, Japan
| | - Norimitsu Tohnai
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka, 565-0871, Japan
| | - Satoshi Minakata
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka, 565-0871, Japan
| | - Takanori Fukushima
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, Yokohama, 226-8503, Japan
| | - Fumitaka Ishiwari
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka, 565-0871, Japan.,Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, Yokohama, 226-8503, Japan.,Frontier Research Base for Global Young Researchers, Graduate School of Engineering, Osaka University, Suita, 565-0871, Japan.,PRESTO, Japan Science and Technology Agency (JST), Kawaguchi, Saitama, 332-0012, Japan.,Innovative Catalysis Science Division, Institute for Open and Transdisciplinary Research Initiatives (ICS-OTRI), Osaka University, 1-1 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Youhei Takeda
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka, 565-0871, Japan
| |
Collapse
|
11
|
Okumatsu D, Kawanaka K, Kainuma S, Kiyokawa K, Minakata S. α-Amination of Carbonyl Compounds by Using Hypervalent Iodine-Based Aminating Reagents Containing a Transferable (Diarylmethylene)amino Group. Chemistry 2023; 29:e202203722. [PMID: 36604401 DOI: 10.1002/chem.202203722] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 01/05/2023] [Accepted: 01/05/2023] [Indexed: 01/07/2023]
Abstract
Hypervalent iodine-based aminating reagents containing a transferable (diarylmethylene)amino group can be used for the α-amination of simple carbonyl compounds such as esters, amides, and ketones in the presence of a lithium base. The (diarylmethylene)amino groups of the products can be readily modified, thus providing access to primary amines and diarylmethylamines. The developed method features transition-metal-free conditions and a simple one-pot procedure without the need to prepare enolate equivalents separately, thus offering a general and practical approach to the synthesis of a wide variety of α-amino carbonyl compounds. Experimental mechanistic investigations indicate that this amination proceeds through a unique radical coupling of an α-carbonyl radical with an iminyl radical; they are generated through a single-electron transfer between a lithium enolate and the hypervalent iodine reagent.
Collapse
Affiliation(s)
- Daichi Okumatsu
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka, 565-0871, Japan
| | - Kazuki Kawanaka
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka, 565-0871, Japan
| | - Shunpei Kainuma
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka, 565-0871, Japan
| | - Kensuke Kiyokawa
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka, 565-0871, Japan
| | - Satoshi Minakata
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka, 565-0871, Japan
| |
Collapse
|
12
|
Okumatsu D, Kawanaka K, Kainuma S, Kiyokawa K, Minakata S. α‐Amination of Carbonyl Compounds by Using Hypervalent Iodine‐Based Aminating Reagents Containing a Transferable (Diarylmethylene)amino Group. Chemistry 2023. [DOI: 10.1002/chem.202300286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Daichi Okumatsu
- Department of Applied Chemistry Graduate School of Engineering Osaka University Yamadaoka 2–1 Suita Osaka 565-0871 Japan
| | - Kazuki Kawanaka
- Department of Applied Chemistry Graduate School of Engineering Osaka University Yamadaoka 2–1 Suita Osaka 565-0871 Japan
| | - Shunpei Kainuma
- Department of Applied Chemistry Graduate School of Engineering Osaka University Yamadaoka 2–1 Suita Osaka 565-0871 Japan
| | - Kensuke Kiyokawa
- Department of Applied Chemistry Graduate School of Engineering Osaka University Yamadaoka 2–1 Suita Osaka 565-0871 Japan
| | - Satoshi Minakata
- Department of Applied Chemistry Graduate School of Engineering Osaka University Yamadaoka 2–1 Suita Osaka 565-0871 Japan
| |
Collapse
|
13
|
Kiyokawa K, Ishizuka M, Minakata S. Stereospecific Oxycyanation of Alkenes with Sulfonyl Cyanide. Angew Chem Int Ed Engl 2023. [DOI: 10.1002/ange.202218743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Kensuke Kiyokawa
- Osaka University: Osaka Daigaku Department of Applied Chemistry JAPAN
| | - Miu Ishizuka
- Osaka University: Osaka Daigaku Department of Applied Chemistry JAPAN
| | - Satoshi Minakata
- Osaka University Department of Applied Chemistry Yamadaoka 2-1 565-0871 Suita JAPAN
| |
Collapse
|
14
|
Zimmermann Crocomo P, Okazaki M, Hosono T, Minakata S, Takeda Y, Data P. Dibenzophenazine‐Based TADF Emitters as Dual Electrochromic and Electroluminescence Materials. Chemistry 2022; 28:e202200826. [DOI: 10.1002/chem.202200826] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Indexed: 01/09/2023]
Affiliation(s)
| | - Masato Okazaki
- Department of Applied Chemistry Graduate School of Engineering Osaka University Yamadaoka 2–1 Suita Osaka 565-0871 Japan
| | - Takumi Hosono
- Department of Applied Chemistry Graduate School of Engineering Osaka University Yamadaoka 2–1 Suita Osaka 565-0871 Japan
| | - Satoshi Minakata
- Department of Applied Chemistry Graduate School of Engineering Osaka University Yamadaoka 2–1 Suita Osaka 565-0871 Japan
| | - Youhei Takeda
- Department of Applied Chemistry Graduate School of Engineering Osaka University Yamadaoka 2–1 Suita Osaka 565-0871 Japan
| | - Przemyslaw Data
- Faculty of Chemistry Silesian University of Technology M. Strzody 9 44-100 Gliwice Poland
| |
Collapse
|
15
|
Nyga A, Kaihara T, Hosono T, Sipala M, Stachelek P, Tohnai N, Minakata S, de Sousa LE, de Silva P, Data P, Takeda Y. Dual-photofunctional organogermanium compound based on donor-acceptor-donor architecture. Chem Commun (Camb) 2022; 58:5889-5892. [PMID: 35471230 DOI: 10.1039/d2cc01568d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A dual-photofunctional organogermanium compound based on a donor-acceptor-donor architecture that exhibits thermally activated delayed fluorescence and mechano-responsive luminochromism has been developed. The developed compound was successfully applied as an emitter for efficient organic light-emitting diodes.
Collapse
Affiliation(s)
- Aleksandra Nyga
- Faculty of Chemistry, Silesian University of Technology, M. Strzody 9, 44-100, Gliwice, Poland.
| | - Takahito Kaihara
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan.
| | - Takumi Hosono
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan.
| | - Massimiliano Sipala
- Faculty of Chemistry, Silesian University of Technology, M. Strzody 9, 44-100, Gliwice, Poland.
| | | | - Norimitsu Tohnai
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan.
| | - Satoshi Minakata
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan.
| | - Leonardo Evaristo de Sousa
- Department of Energy Conversion and Storage, Technical University of Denmark, Anker Engelunds Vej 301, 2800 Kongens Lyngby, Denmark.
| | - Piotr de Silva
- Department of Energy Conversion and Storage, Technical University of Denmark, Anker Engelunds Vej 301, 2800 Kongens Lyngby, Denmark.
| | - Przemyslaw Data
- Faculty of Chemistry, Silesian University of Technology, M. Strzody 9, 44-100, Gliwice, Poland.
| | - Youhei Takeda
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan.
| |
Collapse
|
16
|
Izumi S, Govindharaj P, Drewniak A, Crocomo PZ, Minakata S, de Sousa LE, de Silva P, Data P, Takeda Y. Comparative study of thermally activated delayed fluorescent properties of donor–acceptor and donor–acceptor–donor architectures based on phenoxazine and dibenzo[ a,j]phenazine. Beilstein J Org Chem 2022; 18:459-468. [PMID: 35558649 PMCID: PMC9062652 DOI: 10.3762/bjoc.18.48] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Accepted: 04/21/2022] [Indexed: 11/23/2022] Open
Abstract
A new thermally activated delayed fluorescence (TADF) compound based on a donor–acceptor (D–A) architecture (D = phenoxazine; A = dibenzo[a,j]phenazine) has been developed, and its photophysical properties were characterized. The D–A compound is applicable as an emitting material for efficient organic light-emitting diodes (OLEDs), and its external quantum efficiency (EQE) exceeds the theoretical maximum of those with prompt fluorescent emitters. Most importantly, comparative study of the D–A molecule and its D–A–D counterpart from the viewpoints of the experiments and theoretical calculations revealed the effect of the number of the electron donor on the thermally activated delayed fluorescent behavior.
Collapse
Affiliation(s)
- Saika Izumi
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 5650871, Japan
| | | | - Anna Drewniak
- Faculty of Chemistry, Silesian University of Technology, Strzody 9, 44-100 Gliwice, Poland
| | | | - Satoshi Minakata
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 5650871, Japan
| | - Leonardo Evaristo de Sousa
- Department of Energy Conversion and Storage, Technical University of Denmark, Anker Engelunds Vej 301, 2800 Kongens Lyngby, Denmark
| | - Piotr de Silva
- Department of Energy Conversion and Storage, Technical University of Denmark, Anker Engelunds Vej 301, 2800 Kongens Lyngby, Denmark
| | - Przemyslaw Data
- Faculty of Chemistry, Silesian University of Technology, Strzody 9, 44-100 Gliwice, Poland
| | - Youhei Takeda
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 5650871, Japan
| |
Collapse
|
17
|
Kiyokawa K, Jou K, Minakata S. Intramolecular C-H Amination of N-Alkylsulfamides by tert-Butyl Hypoiodite or N-Iodosuccinimide. Chemistry 2021; 27:13971-13976. [PMID: 34403187 DOI: 10.1002/chem.202102635] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Indexed: 01/15/2023]
Abstract
1,3-Diamines are an important class of compounds that are broadly found in natural products and are also widely used as building blocks in organic synthesis. Although the intramolecular C-H amination of N-alkylsulfamide derivatives is a reliable method for the construction of 1,3-diamine structures, the majority of these methods involve the use of a transition-metal catalyst. We herein report on a new transition-metal-free method using tert-butyl hypoiodite (t-BuOI) or N-iodosuccinimide (NIS), enabling secondary non-benzylic and tertiary C-H amination reactions to proceed. The cyclic sulfamide products can be easily transformed into 1,3-diamines. Mechanistic investigations revealed that amination reactions using t-BuOI or NIS each proceed via different pathways.
Collapse
Affiliation(s)
- Kensuke Kiyokawa
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka, 565-0871, Japan
| | - Keisuke Jou
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka, 565-0871, Japan
| | - Satoshi Minakata
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka, 565-0871, Japan
| |
Collapse
|
18
|
Zimmermann Crocomo P, Kaihara T, Kawaguchi. S, Stachelek P, Minakata S, de Silva P, Data P, Takeda Y. The Impact of C 2 Insertion into a Carbazole Donor on the Physicochemical Properties of Dibenzo[a,j]phenazine-Cored Donor-Acceptor-Donor Triads. Chemistry 2021; 27:13390-13398. [PMID: 34314537 PMCID: PMC8519004 DOI: 10.1002/chem.202101654] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Indexed: 11/10/2022]
Abstract
Novel electron donor-acceptor-donor (D-A-D) compounds comprising dibenzo[a,j]phenazine as the central acceptor core and two 7-membered diarylamines (iminodibenzyl and iminostilbene) as the donors have been designed and synthesized. Investigation of their physicochemical properties revealed the impact of C2 insertion into well-known carbazole electron donors on the properties of previously reported twisted dibenzo[a,j]phenazine-core D-A-D triads. Slight structural modification caused a drastic change in conformational preference, allowing unique photophysical behavior of dual emission derived from room-temperature phosphorescence and triplet-triplet annihilation. Furthermore, electrochemical analysis suggested sigma-dimer formation and electrochemical polymerization on the electrode. Quantum chemical calculations also rationalized the experimental results.
Collapse
Affiliation(s)
| | - Takahito Kaihara
- Department of Applied ChemistryGraduate School of EngineeringOsaka UniversityYamadaoka 2–1SuitaOsaka565-0871Japan
| | - Soki Kawaguchi.
- Nada Junior and Senior High SchoolUozakikitamachi 8–5-1KobeHigashinada-ku, Hyogo658-0082Japan
- Current contact address: Department of ChemistryFaculty of ScienceHokkaido UniversitySapporoHokkaido060-0810Japan
| | | | - Satoshi Minakata
- Department of Applied ChemistryGraduate School of EngineeringOsaka UniversityYamadaoka 2–1SuitaOsaka565-0871Japan
| | - Piotr de Silva
- Department of Energy Conversion and StorageTechnical University of Denmark2800Kongens LyngbyDenmark
| | - Przemyslaw Data
- Faculty of ChemistrySilesian University of TechnologyM. Strzody 944-100GliwicePoland
| | - Youhei Takeda
- Department of Applied ChemistryGraduate School of EngineeringOsaka UniversityYamadaoka 2–1SuitaOsaka565-0871Japan
| |
Collapse
|
19
|
Minakata S, Kiyosu Y, Tanaka S, Okumura S, Kiyokawa K. Synthesis of Fused Diaziridine Derivatives from Cyclic Secondary Amines by Utilizing N-Bromosulfonamides as an Aminating Reagent. SYNTHESIS-STUTTGART 2021. [DOI: 10.1055/a-1468-8275] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
AbstractThe synthesis of a series of fused diaziridines, which are difficult to access by existing methods, was achieved by the reaction of cyclic secondary amines with p-toluenesulfonamide in the presence of N-bromosuccinimide (NBS) and a suitable base. This oxidation system enables the efficient in situ formation of the key intermediates, which are N-bromoamines (a precursor of cyclic imines) and N-bromosulfonamides. In addition, an alternative method using N-bromo-N-sodio-p-toluenesulfonamide (bromamine-T) in the presence of a catalytic amount of CF3CO2H for the synthesis of fused diaziridines is also reported.
Collapse
|
20
|
Kawai S, Kher-Elden MA, Sadeghi A, Abd El-Fattah ZM, Sun K, Izumi S, Minakata S, Takeda Y, Lobo-Checa J. Near Fermi Superatom State Stabilized by Surface State Resonances in a Multiporous Molecular Network. Nano Lett 2021; 21:6456-6462. [PMID: 34038137 PMCID: PMC8488955 DOI: 10.1021/acs.nanolett.1c01200] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Revised: 05/21/2021] [Indexed: 06/12/2023]
Abstract
Two-dimensional honeycomb molecular networks confine a substrate's surface electrons within their pores, providing an ideal playground to investigate the quantum electron scattering phenomena. Besides surface state confinement, laterally protruding organic states can collectively hybridize at the smallest pores into superatom molecular orbitals. Although both types of pore states could be simultaneously hosted within nanocavities, their coexistence and possible interaction are unexplored. Here, we show that these two types of pore states do coexist within the smallest nanocavities of a two-dimensional halogen-bonding multiporous network grown on Ag(111) studied using a combination of scanning tunneling microscopy and spectroscopy, density functional theory calculations, and electron plane wave expansion simulations. We find that superatom molecular orbitals undergo an important stabilization when hybridizing with the confined surface state, following the significant lowering of its free-standing energy. These findings provide further control over the surface electronic structure exerted by two-dimensional nanoporous systems.
Collapse
Affiliation(s)
- Shigeki Kawai
- Research
Center for Advanced Measurement and Characterization, National Institute for Materials Science, 1-2-1, Sengen, Tsukuba, Ibaraki 305-0047, Japan
- Graduate
School of Pure and Applied Sciences, University
of Tsukuba, Tsukuba 305-8571, Japan
| | - Mohammad A. Kher-Elden
- Physics
Department, Faculty of Science, Al-Azhar
University, Nasr City, E-11884 Cairo, Egypt
| | - Ali Sadeghi
- Department
of Physics, Shahid Beheshti University, 1983969411 Tehran, Iran
- School
of Nano Science, Institute for Research
in Fundamental Sciences (IPM), 19395-5531 Tehran, Iran
| | | | - Kewei Sun
- Research
Center for Advanced Measurement and Characterization, National Institute for Materials Science, 1-2-1, Sengen, Tsukuba, Ibaraki 305-0047, Japan
| | - Saika Izumi
- Department
of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1,
Suita, Osaka 565-0871, Japan
| | - Satoshi Minakata
- Department
of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1,
Suita, Osaka 565-0871, Japan
| | - Youhei Takeda
- Department
of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1,
Suita, Osaka 565-0871, Japan
| | - Jorge Lobo-Checa
- Instituto
de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza, E-50009 Zaragoza, Spain
- Departamento
de Física de la Materia Condensada, Universidad de Zaragoza, E-50009 Zaragoza, Spain
| |
Collapse
|
21
|
Umeda T, Minakata S. A practical method for the aziridination of α,β-unsaturated carbonyl compounds with a simple carbamate utilizing sodium hypochlorite pentahydrate. RSC Adv 2021; 11:22120-22124. [PMID: 35480842 PMCID: PMC9034239 DOI: 10.1039/d1ra04297a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Accepted: 06/17/2021] [Indexed: 12/22/2022] Open
Abstract
The efficient formation of tert-butyl N-chloro-N-sodio-carbamate by the reaction of simple tert-butyl carbamate with sodium hypochlorite pentahydrate (NaOCl·5H2O) would be a practical and green method for the aziridination of α,β-unsaturated carbonyl compounds. The process described herein is transition-metal free, all of the materials are commercially available, the byproducts (NaCl and H2O) are environmentally benign and the reaction is stereoselective. The resulting aziridines are potential precursors of amino acids.
Collapse
Affiliation(s)
- Takehiro Umeda
- Department of Applied Chemistry, Graduate of Engineering, Osaka University Yamadaoka 2-1 Suita Osaka 565-0871 Japan
| | - Satoshi Minakata
- Department of Applied Chemistry, Graduate of Engineering, Osaka University Yamadaoka 2-1 Suita Osaka 565-0871 Japan
| |
Collapse
|
22
|
Abstract
Despite the significant achievements related to the C3 functionalization of indoles, cyanoalkylation reactions continue to remain rather limited. We herein report on the formal C3 cyanoalkylation of indoles with cyanohydrins in the presence of a tris(pentafluorophenyl)borane (B(C6F5)3) catalyst. It is noteworthy that cyanohydrins are used as a cyanoalkylating reagent in the present reaction, even though they are usually used as only a HCN source. Mechanistic investigations revealed the unique reactivity of the B(C6F5)3 catalyst in promoting the decomposition of a cyanohydrin by a Lewis acidic activation through the coordination of the cyano group to the boron center. In addition, a catalytic three-component reaction using indoles, aldehydes as a carbon unit, and acetone cyanohydrin that avoids the discrete preparation of each aldehyde-derived cyanohydrin is also reported. The developed methods provide straightforward, highly efficient, and atom-economic access to various types of synthetically useful indole-3-acetonitrile derivatives containing α-tertiary or quaternary carbon centers.
Collapse
Affiliation(s)
- Kensuke Kiyokawa
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan
| | - Naruyo Urashima
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan
| | - Satoshi Minakata
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan
| |
Collapse
|
23
|
Thom KA, Förster T, Weingart O, Goto S, Takeda Y, Minakata S, Gilch P. Front Cover: The Photophysics of Dibenzo[
a,j
]phenazine (4/2021). CHEMPHOTOCHEM 2021. [DOI: 10.1002/cptc.202100066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Kristoffer A. Thom
- Institut für Physikalische Chemie Heinrich-Heine-Universität Düsseldorf Universitätsstr. 1 40225 Düsseldorf Germany
| | - Tom Förster
- Institut für Physikalische Chemie Heinrich-Heine-Universität Düsseldorf Universitätsstr. 1 40225 Düsseldorf Germany
| | - Oliver Weingart
- Institut für Theoretische Chemie und Computerchemie Heinrich-Heine-Universität Düsseldorf Universitätsstr. 1 40225 Düsseldorf Germany
| | - Shimpei Goto
- Department of Applied Chemistry, Graduate School of Engineering Osaka University, Yamadaoka 2–1 Suita Osaka 565-0871 Japan
| | - Youhei Takeda
- Department of Applied Chemistry, Graduate School of Engineering Osaka University, Yamadaoka 2–1 Suita Osaka 565-0871 Japan
| | - Satoshi Minakata
- Department of Applied Chemistry, Graduate School of Engineering Osaka University, Yamadaoka 2–1 Suita Osaka 565-0871 Japan
| | - Peter Gilch
- Institut für Physikalische Chemie Heinrich-Heine-Universität Düsseldorf Universitätsstr. 1 40225 Düsseldorf Germany
| |
Collapse
|
24
|
Thom KA, Förster T, Weingart O, Goto S, Takeda Y, Minakata S, Gilch P. The Photophysics of Dibenzo[
a,j
]phenazine. CHEMPHOTOCHEM 2021. [DOI: 10.1002/cptc.202100065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Kristoffer A. Thom
- Institut für Physikalische Chemie Heinrich-Heine-Universität Düsseldorf Universitätsstr. 1 40225 Düsseldorf Germany
| | - Tom Förster
- Institut für Physikalische Chemie Heinrich-Heine-Universität Düsseldorf Universitätsstr. 1 40225 Düsseldorf Germany
| | - Oliver Weingart
- Institut für Theoretische Chemie und Computerchemie Heinrich-Heine-Universität Düsseldorf Universitätsstr. 1 40225 Düsseldorf Germany
| | - Shimpei Goto
- Department of Applied Chemistry, Graduate School of Engineering Osaka University, Yamadaoka 2–1 Suita Osaka 565-0871 Japan
| | - Youhei Takeda
- Department of Applied Chemistry, Graduate School of Engineering Osaka University, Yamadaoka 2–1 Suita Osaka 565-0871 Japan
| | - Satoshi Minakata
- Department of Applied Chemistry, Graduate School of Engineering Osaka University, Yamadaoka 2–1 Suita Osaka 565-0871 Japan
| | - Peter Gilch
- Institut für Physikalische Chemie Heinrich-Heine-Universität Düsseldorf Universitätsstr. 1 40225 Düsseldorf Germany
| |
Collapse
|
25
|
Takeda Y, Toyoda K, Sameera WMC, Tohnai N, Minakata S. Palladium‐Catalyzed Regioselective and Stereospecific Ring‐Opening Suzuki‐Miyaura Arylative Cross‐Coupling of 2‐Arylazetidines with Arylboronic Acids. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100195] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Youhei Takeda
- Department of Applied Chemistry Graduate School of Engineering Osaka University Yamadaoka 2-1 Suita Osaka 5650871 Japan
| | - Kazuya Toyoda
- Department of Applied Chemistry Graduate School of Engineering Osaka University Yamadaoka 2-1 Suita Osaka 5650871 Japan
| | - W. M. C. Sameera
- Institute of Low Temperature Science Hokkaido University North 19 Kita-ku, Sapporo Hokkaido 0600819 Japan
| | - Norimitsu Tohnai
- Department of Applied Chemistry Graduate School of Engineering Osaka University Yamadaoka 2-1 Suita Osaka 5650871 Japan
| | - Satoshi Minakata
- Department of Applied Chemistry Graduate School of Engineering Osaka University Yamadaoka 2-1 Suita Osaka 5650871 Japan
| |
Collapse
|
26
|
Affiliation(s)
- Kristoffer A. Thom
- Institut für Physikalische Chemie Heinrich-Heine-Universität Düsseldorf Universitätsstr. 1 40225 Düsseldorf Germany
| | - Tom Förster
- Institut für Physikalische Chemie Heinrich-Heine-Universität Düsseldorf Universitätsstr. 1 40225 Düsseldorf Germany
| | - Oliver Weingart
- Institut für Theoretische Chemie und Computerchemie Heinrich-Heine-Universität Düsseldorf Universitätsstr. 1 40225 Düsseldorf Germany
| | - Shimpei Goto
- Department of Applied Chemistry, Graduate School of Engineering Osaka University, Yamadaoka 2–1 Suita Osaka 565-0871 Japan
| | - Youhei Takeda
- Department of Applied Chemistry, Graduate School of Engineering Osaka University, Yamadaoka 2–1 Suita Osaka 565-0871 Japan
| | - Satoshi Minakata
- Department of Applied Chemistry, Graduate School of Engineering Osaka University, Yamadaoka 2–1 Suita Osaka 565-0871 Japan
| | - Peter Gilch
- Institut für Physikalische Chemie Heinrich-Heine-Universität Düsseldorf Universitätsstr. 1 40225 Düsseldorf Germany
| |
Collapse
|
27
|
Minakata S, Miwa H, Yamamoto K, Hirayama A, Okumura S. Diastereodivergent Intermolecular 1,2-Diamination of Unactivated Alkenes Enabled by Iodine Catalysis. J Am Chem Soc 2021; 143:4112-4118. [DOI: 10.1021/jacs.1c00228] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Satoshi Minakata
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan
| | - Hayato Miwa
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan
| | - Kenya Yamamoto
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan
| | - Arata Hirayama
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan
| | - Sota Okumura
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan
| |
Collapse
|
28
|
Higginbotham HF, Okazaki M, de Silva P, Minakata S, Takeda Y, Data P. Heavy-Atom-Free Room-Temperature Phosphorescent Organic Light-Emitting Diodes Enabled by Excited States Engineering. ACS Appl Mater Interfaces 2021; 13:2899-2907. [PMID: 33404215 DOI: 10.1021/acsami.0c17295] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Room temperature phosphorescence materials offer great opportunities for applications in optoelectronics, due to their unique photophysical characteristics. However, heavy-atom-free organic emitters that can realize distinct electrophosphorescence are rarely exploited. Herein a new approach for designing heavy-atom-free organic room temperature phosphorescence emitters for organic light-emitting diodes is presented. The subtle tuning of the singlet and triplet excited states energies by appropriate choice of host matrix allows tailored emission properties and switching of emission channels between thermally activated delayed fluorescence and room temperature phosphorescence. Moreover, an efficient and heavy-atom-free room temperature phosphorescence organic light-emitting diode using the developed emitter is realized.
Collapse
Affiliation(s)
- Heather F Higginbotham
- School of Science, Swinburne University of Technology, Hawthorne, Victoria 3122, Australia
| | - Masato Okazaki
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan
| | - Piotr de Silva
- Department of Energy Conversion and Storage, Technical University of Denmark, Anker Engelunds Vej 301, 2800 Kongens Lyngby, Denmark
| | - Satoshi Minakata
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan
| | - Youhei Takeda
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan
| | - Przemyslaw Data
- Faculty of Chemistry, Silesian University of Technology, M. Strzody 9, 44-100 Gliwice, Poland
- Physics Department, Durham University, South Road, Durham DH1 3LE, United Kingdom
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Sklodowskiej 34, 41-819 Zabrze, Poland
| |
Collapse
|
29
|
Minakata S, Kiyokawa K, Nakamura S. Transition-Metal-Free Aziridination of Alkenes with Sulfamate Esters Using tert-Butyl Hypoiodite. HETEROCYCLES 2021. [DOI: 10.3987/com-20-s(k)20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
30
|
Izumi S, Nyga A, de Silva P, Tohnai N, Minakata S, Data P, Takeda Y. Revealing Topological Influence of Phenylenediamine Unit on Physicochemical Properties of Donor-Acceptor-Donor-Acceptor Thermally Activated Delayed Fluorescent Macrocycles. Chem Asian J 2020; 15:4098-4103. [PMID: 33094560 DOI: 10.1002/asia.202001173] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Revised: 10/21/2020] [Indexed: 12/14/2022]
Abstract
A new thermally activated delayed fluorescence (TADF)-displaying macrocyclic compound m-1 comprising of two electron-donors (N,N'-diphenyl-m-phenylenediamine) and two electron-acceptors (dibenzo[a,j]phenazine) has been synthesized. The macrocycle developed herein is regarded as a regioisomer of the previously reported TADF macrocycle p-1, which has two N,N'-diphenyl-p-phenylenediamines as the donors. To understand the influence of the topology of the phenylenediamine donors on physicochemical properties of TADF-active macrocycles, herein the molecular structure in the single crystals, photophysical properties, electrochemical behavior, and TADF properties of m-1 have been investigated compared with those of p-1. The substitution of p-phenylene donor with m-phenylene donor led to distinct positive solvatoluminochromism over the full visible-color range, unique oxidative electropolymerization, and slightly lower contribution of TADF, due to the lower CT character in the excited states.
Collapse
Affiliation(s)
- Saika Izumi
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka, 5650871, Japan
| | - Aleksandra Nyga
- Faculty of Chemistry, Silesian University of Technology, M. Strzody 9, 44-100, Gliwice, Poland
| | - Piotr de Silva
- Department of Energy Conversion and Storage, Technical University of Denmark, Anker Engelunds Vej 301, 2800 Kgs., Lyngby, Denmark
| | - Norimitsu Tohnai
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka, 5650871, Japan
| | - Satoshi Minakata
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka, 5650871, Japan
| | - Przemyslaw Data
- Faculty of Chemistry, Silesian University of Technology, M. Strzody 9, 44-100, Gliwice, Poland.,Centre of Polymer and Carbon Materials, Polish Academy of Science, M. Curie-Sklodowskiej 34, 41-819, Zabrze, Poland
| | - Youhei Takeda
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka, 5650871, Japan
| |
Collapse
|
31
|
Nyga A, Izumi S, Higginbotham HF, Stachelek P, Pluczyk S, Silva P, Minakata S, Takeda Y, Data P. Electrochemical and Spectroelectrochemical Comparative Study of Macrocyclic Thermally Activated Delayed Fluorescent Compounds: Molecular Charge Stability vs OLED EQE Roll‐Off. ASIAN J ORG CHEM 2020. [DOI: 10.1002/ajoc.202000475] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Aleksandra Nyga
- Faculty of Chemistry Silesian University of Technology M. Strzody 9 44–100 Gliwice Poland
| | - Saika Izumi
- Department of Applied Chemistry Graduate School of Engineering Osaka University Yamadaoka 2–1, Suita Osaka 5650871 Japan
| | | | - Patrycja Stachelek
- Physics Department Durham University South Road Durham DH1 3LE United Kingdom
| | - Sandra Pluczyk
- Faculty of Chemistry Silesian University of Technology M. Strzody 9 44–100 Gliwice Poland
| | - Piotr Silva
- Department of Energy Conversion and Storage Technical University of Denmark Anker Engelunds Vej 301 2800 Kgs. Lyngby Denmark
| | - Satoshi Minakata
- Department of Applied Chemistry Graduate School of Engineering Osaka University Yamadaoka 2–1, Suita Osaka 5650871 Japan
| | - Youhei Takeda
- Department of Applied Chemistry Graduate School of Engineering Osaka University Yamadaoka 2–1, Suita Osaka 5650871 Japan
| | - Przemyslaw Data
- Faculty of Chemistry Silesian University of Technology M. Strzody 9 44–100 Gliwice Poland
- Centre of Polymer and Carbon Materials Polish Academy of Science M. Curie-Sklodowskiej 34 41–819 Zabrze Poland
| |
Collapse
|
32
|
Takeda Y, Sameera WMC, Minakata S. Palladium-Catalyzed Regioselective and Stereospecific Ring-Opening Cross-Coupling of Aziridines: Experimental and Computational Studies. Acc Chem Res 2020; 53:1686-1702. [PMID: 32786337 DOI: 10.1021/acs.accounts.0c00395] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Aziridines, i.e., the smallest saturated N-heterocycles, serve as useful building blocks in synthetic organic chemistry. Because of the release of the large ring strain energy accommodated in the small ring, (ca. 27 kcal/mol), aziridines undergo ring-opening reactions with a variety of nucleophiles. Therefore, among the synthetic reactions utilizing aziridines, regioselective ring-opening substitutions of aziridines with nucleophiles, such as heteroatomic nucleophiles (e.g., amines, alcohols, and thiols) and carbonaceous nucleophiles (e.g., carbanions, organometallic reagents, and electron-rich arenes), constitute a useful synthetic methodology to synthesize biologically relevant β-functionalized alkylamines. However, the regioselection in such traditional ring-opening substitutions of aziridines is highly dependent on the substrate combination, and stereochemical control is challenging to achieve, especially in the case of Lewis acid-promoted variants. Therefore, the development of robust catalytic ring-opening functionalization methods that enable precise prediction of regioselectivity and stereochemistry is desirable. In this direction, our group focused on the highly regioselective and stereospecific nature of the stoichiometric oxidative addition elementary step of 2-substituted aziridines into Pd(0) complexes in an SN2 fashion. In conjunction with the recent advancements in transition-metal-catalyzed cross-coupling reactions of alkyl pseudohalides containing a C(sp3)-Q (Q = O, N, S, etc.) bond, aziridines can be used as nonclassical alkyl pseudohalides in regioselective and stereospecific cross-couplings.In this Account, starting from the background of transition-metal-catalyzed ring-opening functionalization of aziridines, our contributions to the palladium-catalyzed regioselective and stereoinvertive cross-couplings of aziridines with organoboron reagents to form C(sp3)-C, C(sp3)-B, and C(sp3)-Si bonds have been compiled. The developed methods allow the syntheses of medicinally important amine compounds, e.g., enantioenriched β-phenethylamines, β-amino acids, and their boron and silyl surrogates, from readily available enantiopure aziridine substrates. Notably, the regioselectivity of the ring opening can be switched by appropriate selection of the catalyst (i.e., Pd/NHC vs Pd/PR3 systems). Computational studies rationalized the detailed mechanisms of the full catalytic cycle and the regioselectivity and stereospecificity of the reactions. The computational results suggested that the interactions operating between the Pd catalyst and aziridine substrate play important roles in determining the regioselection of the aziridine ring-opening event (i.e., oxidative addition). Also, the computational results rationalized the role of water molecules in promoting the transmetalation step through the formation of a Pd-hydroxide active intermediate. This Account evidences the benefits of synergistic collaborations between experimental and computational methods in developing novel transition-metal-catalyzed cross-coupling reactions.
Collapse
Affiliation(s)
- Youhei Takeda
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan
| | - W. M. C. Sameera
- Institute of Low Temperature Science, Hokkaido University, Kita-ku, North 19 West 8, Sapporo, Hokkaido 060-0819, Japan
| | - Satoshi Minakata
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan
| |
Collapse
|
33
|
Yamagishi H, Nakajima S, Yoo J, Okazaki M, Takeda Y, Minakata S, Albrecht K, Yamamoto K, Badía-Domínguez I, Oliva MM, Delgado MCR, Ikemoto Y, Sato H, Imoto K, Nakagawa K, Tokoro H, Ohkoshi SI, Yamamoto Y. Sigmoidally hydrochromic molecular porous crystal with rotatable dendrons. Commun Chem 2020; 3:118. [PMID: 36703455 PMCID: PMC9814496 DOI: 10.1038/s42004-020-00364-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Accepted: 07/29/2020] [Indexed: 01/29/2023] Open
Abstract
Vapochromic behaviour of porous crystals is beneficial for facile and rapid detection of gaseous molecules without electricity. Toward this end, tailored molecular designs have been established for metal-organic, covalent-bonded and hydrogen-bonded frameworks. Here, we explore the hydrochromic chemistry of a van der Waals (VDW) porous crystal. The VDW porous crystal VPC-1 is formed from a novel aromatic dendrimer having a dibenzophenazine core and multibranched carbazole dendrons. Although the constituent molecules are connected via VDW forces, VPC-1 maintains its structural integrity even after desolvation. VPC-1 exhibits reversible colour changes upon uptake/release of water molecules due to the charge transfer character of the constituent dendrimer. Detailed structural analyses reveal that the outermost carbazole units alone are mobile in the crystal and twist simultaneously in response to water vapour. Thermodynamic analysis suggests that the sigmoidal water sorption is induced by the affinity alternation of the pore surface from hydrophobic to hydrophilic.
Collapse
Affiliation(s)
- Hiroshi Yamagishi
- grid.20515.330000 0001 2369 4728Department of Materials Science, Faculty of Pure and Applied Sciences, and Tsukuba Research Center for Energy Materials Science (TREMS), University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8573 Japan
| | - Sae Nakajima
- grid.20515.330000 0001 2369 4728Department of Materials Science, Faculty of Pure and Applied Sciences, and Tsukuba Research Center for Energy Materials Science (TREMS), University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8573 Japan
| | - Jooyoung Yoo
- grid.20515.330000 0001 2369 4728Department of Materials Science, Faculty of Pure and Applied Sciences, and Tsukuba Research Center for Energy Materials Science (TREMS), University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8573 Japan
| | - Masato Okazaki
- grid.136593.b0000 0004 0373 3971Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871 Japan
| | - Youhei Takeda
- grid.136593.b0000 0004 0373 3971Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871 Japan
| | - Satoshi Minakata
- grid.136593.b0000 0004 0373 3971Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871 Japan
| | - Ken Albrecht
- grid.32197.3e0000 0001 2179 2105Laboratory for Chemistry and Life Science, Tokyo Institute of Technology, 4259 Nagatsuta Midori-ku, Yokohama, 226-8503 Japan ,grid.419082.60000 0004 1754 9200ERATO Yamamoto Atom Hybrid Project, Japan Science and Technology Agency (JST), 4259 Nagatsuta Midori-ku, Yokohama, 226-8503 Japan ,grid.177174.30000 0001 2242 4849Institute for Materials Chemistry and Engineering, Kyushu University, 6-1 Kasuga-koen, Fukuoka, 816-8580 Japan
| | - Kimihisa Yamamoto
- grid.32197.3e0000 0001 2179 2105Laboratory for Chemistry and Life Science, Tokyo Institute of Technology, 4259 Nagatsuta Midori-ku, Yokohama, 226-8503 Japan ,grid.419082.60000 0004 1754 9200ERATO Yamamoto Atom Hybrid Project, Japan Science and Technology Agency (JST), 4259 Nagatsuta Midori-ku, Yokohama, 226-8503 Japan
| | - Irene Badía-Domínguez
- grid.10215.370000 0001 2298 7828Department of Physical Chemistry, University of Malaga, Campus de Teatinos s/n, 29071 Malaga, Spain
| | - Maria Moreno Oliva
- grid.10215.370000 0001 2298 7828Department of Physical Chemistry, University of Malaga, Campus de Teatinos s/n, 29071 Malaga, Spain
| | - M. Carmen Ruiz Delgado
- grid.10215.370000 0001 2298 7828Department of Physical Chemistry, University of Malaga, Campus de Teatinos s/n, 29071 Malaga, Spain
| | - Yuka Ikemoto
- grid.410592.b0000 0001 2170 091XJapan Synchrotron Radiation Research Institute (JASRI) SPring-8, 1-1-1 Koto, Sayo, Hyogo 679-5198 Japan
| | - Hiroyasu Sato
- Rigaku Corporation, 12-9-3 Matsubara, Akishima, Tokyo 196-8666 Japan
| | - Kenta Imoto
- grid.26999.3d0000 0001 2151 536XDepartment of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033 Japan
| | - Kosuke Nakagawa
- grid.26999.3d0000 0001 2151 536XDepartment of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033 Japan
| | - Hiroko Tokoro
- grid.20515.330000 0001 2369 4728Department of Materials Science, Faculty of Pure and Applied Sciences, and Tsukuba Research Center for Energy Materials Science (TREMS), University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8573 Japan
| | - Shin-ichi Ohkoshi
- grid.26999.3d0000 0001 2151 536XDepartment of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033 Japan
| | - Yohei Yamamoto
- grid.20515.330000 0001 2369 4728Department of Materials Science, Faculty of Pure and Applied Sciences, and Tsukuba Research Center for Energy Materials Science (TREMS), University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8573 Japan
| |
Collapse
|
34
|
Abstract
In this Account, we provide an overview of our recent advances in oxidative transformations that enable the introduction of nitrogen and oxygen functionalities into organic molecules by taking advantage of the unique characteristics of iodine-based reagents, such as hypervalency, soft Lewis acidity, high leaving ability, and radical reactivity. We also report on the development of new types of hypervalent iodine reagents containing a transferable nitrogen functional group with the objective of preparing primary amines, which is described in the latter part of this Account.1 Introduction2 Decarboxylative Functionalization of β,γ-Unsaturated Carboxylic Acids3 Decarboxylative Functionalization at Tertiary Carbon Centers4 C–H Bond Functionalization at Tertiary Carbon Centers5 Intramolecular C–H Amination of Sulfamate Esters and N-Alkylsulfamides6 Oxidative Amination with Hypervalent Iodine Reagents Containing Transferable Nitrogen Functional Groups7 Summary and Outlook
Collapse
Affiliation(s)
- Kensuke Kiyokawa
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University
| | | |
Collapse
|
35
|
Izumi S, Higginbotham HF, Nyga A, Stachelek P, Tohnai N, Silva PD, Data P, Takeda Y, Minakata S. Thermally Activated Delayed Fluorescent Donor–Acceptor–Donor–Acceptor π-Conjugated Macrocycle for Organic Light-Emitting Diodes. J Am Chem Soc 2020; 142:1482-1491. [DOI: 10.1021/jacs.9b11578] [Citation(s) in RCA: 82] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
| | | | - Aleksandra Nyga
- Faculty of Chemistry, Silesian University of Technology, M. Strzody 9, Gliwice 44-100, Poland
| | - Patrycja Stachelek
- Physics Department, Durham University, South Road, Durham DH1 3LE, United Kingdom
| | | | - Piotr de Silva
- Department of Energy Conversion and Storage, Technical University of Denmark, Anker Engelunds Vej 301, Kongens Lyngby 2800, Denmark
| | - Przemyslaw Data
- Faculty of Chemistry, Silesian University of Technology, M. Strzody 9, Gliwice 44-100, Poland
- Physics Department, Durham University, South Road, Durham DH1 3LE, United Kingdom
- Center of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Sklodowskiej 34, Zabrze 41-819, Poland
| | | | | |
Collapse
|
36
|
Takeda Y, Data P, Minakata S. Alchemy of donor–acceptor–donor multi-photofunctional organic materials: from construction of electron-deficient azaaromatics to exploration of functions. Chem Commun (Camb) 2020; 56:8884-8894. [DOI: 10.1039/d0cc03322g] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
This Feature Article overviews the recent development of multi-photofunctional organic materials based on a twisted donor-acceptor-donor scaffold, which is driven by novel synthetic methods for exotic azaromatic compounds.
Collapse
Affiliation(s)
- Youhei Takeda
- Department of Applied Chemistry
- Graduate School of Engineering
- Osaka University
- Osaka 565-0871
- Japan
| | - Przemyslaw Data
- Faculty of Chemistry
- Silesian University of Technology
- M. Strzody 9
- Gliwice 44-100
- Poland
| | - Satoshi Minakata
- Department of Applied Chemistry
- Graduate School of Engineering
- Osaka University
- Osaka 565-0871
- Japan
| |
Collapse
|
37
|
Takeda Y, Mizuno H, Okada Y, Okazaki M, Minakata S, Penfold T, Fukuhara G. Front Cover: Hydrostatic Pressure‐Controlled Ratiometric Luminescence Responses of a Dibenzo[
a,j
]phenazine‐Cored Mechanoluminophore (ChemPhotoChem 12/2019). CHEMPHOTOCHEM 2019. [DOI: 10.1002/cptc.201900272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Youhei Takeda
- Department of Applied Chemistry Graduate School of EngineeringOsaka University Yamadaoka 2-1, Suita Osaka 565-0871 Japan
| | - Hiroaki Mizuno
- Department of ChemistryTokyo Institute of Technology 2-12-1 Ookayama, Meguro-ku Tokyo 152-8511 Japan
| | - Yusuke Okada
- Department of ChemistryTokyo Institute of Technology 2-12-1 Ookayama, Meguro-ku Tokyo 152-8511 Japan
| | - Masato Okazaki
- Department of Applied Chemistry Graduate School of EngineeringOsaka University Yamadaoka 2-1, Suita Osaka 565-0871 Japan
| | - Satoshi Minakata
- Department of Applied Chemistry Graduate School of EngineeringOsaka University Yamadaoka 2-1, Suita Osaka 565-0871 Japan
| | - Thomas Penfold
- Chemistry School of Natural and Environmental SciencesNewcastle University Newcastle upon Tyne NE1 7RU United Kingdom
| | - Gaku Fukuhara
- Department of ChemistryTokyo Institute of Technology 2-12-1 Ookayama, Meguro-ku Tokyo 152-8511 Japan
- JST, PRESTO 4-1-8 Honcho, Kawaguchi Saitama 332-0012 Japan
| |
Collapse
|
38
|
Kiyokawa K, Kainuma S, Minakata S. Electrophilic Amination of Allylic Boranes with Azodicarboxylates: Synthesis of α,α-Disubstituted Allylic Amine Derivatives. CHEM LETT 2019. [DOI: 10.1246/cl.190448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Kensuke Kiyokawa
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Shunpei Kainuma
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Satoshi Minakata
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| |
Collapse
|
39
|
Takeda Y, Minakata S. Aromatic-fused diketophosphanyl-core organic functional materials: phosphorus mimics of imides or beyond? Org Biomol Chem 2019; 17:7807-7821. [PMID: 31313797 DOI: 10.1039/c9ob01328h] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Recently, missing pieces of organophosphorus compounds, i.e., aromatic-fused diketophosphanyl compounds, have attracted much attention as promising scaffolds of building blocks for functional organic materials. In this review, the brief historical background, synthetic methods, structures, and optoelectronic aspects of aromatic-fused diketophosphanyls are overviewed.
Collapse
Affiliation(s)
- Youhei Takeda
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamdaoka 2-1, Suita, Osaka 565-0871, Japan.
| | | |
Collapse
|
40
|
Takeda Y, Mizuno H, Okada Y, Okazaki M, Minakata S, Penfold T, Fukuhara G. Hydrostatic Pressure‐Controlled Ratiometric Luminescence Responses of a Dibenzo[
a,j
]phenazine‐Cored Mechanoluminophore. CHEMPHOTOCHEM 2019. [DOI: 10.1002/cptc.201900190] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Youhei Takeda
- Department of Applied Chemistry Graduate School of Engineering Osaka University Yamadaoka 2-1, Suita Osaka 565-0871 Japan
| | - Hiroaki Mizuno
- Department of Chemistry Tokyo Institute of Technology 2-12-1 Ookayama, Meguro-ku Tokyo 152-8511 Japan
| | - Yusuke Okada
- Department of Chemistry Tokyo Institute of Technology 2-12-1 Ookayama, Meguro-ku Tokyo 152-8511 Japan
| | - Masato Okazaki
- Department of Applied Chemistry Graduate School of Engineering Osaka University Yamadaoka 2-1, Suita Osaka 565-0871 Japan
| | - Satoshi Minakata
- Department of Applied Chemistry Graduate School of Engineering Osaka University Yamadaoka 2-1, Suita Osaka 565-0871 Japan
| | - Thomas Penfold
- Chemistry School of Natural and Environmental Sciences Newcastle University Newcastle upon Tyne NE1 7RU United Kingdom
| | - Gaku Fukuhara
- Department of Chemistry Tokyo Institute of Technology 2-12-1 Ookayama, Meguro-ku Tokyo 152-8511 Japan
- JST, PRESTO 4-1-8 Honcho, Kawaguchi Saitama 332-0012 Japan
| |
Collapse
|
41
|
Takeda Y, Shibuta K, Aoki S, Tohnai N, Minakata S. Catalyst-controlled regiodivergent ring-opening C(sp 3)-Si bond-forming reactions of 2-arylaziridines with silylborane enabled by synergistic palladium/copper dual catalysis. Chem Sci 2019; 10:8642-8647. [PMID: 31803438 PMCID: PMC6844297 DOI: 10.1039/c9sc02507c] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2019] [Accepted: 07/30/2019] [Indexed: 01/23/2023] Open
Abstract
A Pd/Cu catalyst-controlled regiodivergent and stereospecific ring-opening C(sp3)–Si cross-coupling of 2-arylaziridines with silylborane has been developed and a new tandem reaction to give another regioisomer of silylamine has been discovered.
A catalyst-controlled regiodivergent and stereospecific ring-opening C(sp3)–Si cross-coupling of 2-arylaziridines with silylborane enabled by synergistic Pd/Cu dual catalysis has been developed. Just by selecting a suitable combination of catalysts, the regioselectivity of the coupling is completely switched to efficiently provide two regioisomers of β-silylamines (i.e., β-silyl-α-phenethylamines and β-silyl-β-phenethylamines) in good to high yields. Furthermore, a slight modification of the reaction conditions caused a drastic change in reaction pathways, leading to a tandem reaction to produce another regioisomer of silylamine (i.e., α-silyl-β-phenethylamines) in an efficient and selective manner.
Collapse
Affiliation(s)
- Youhei Takeda
- Department of Applied Chemistry , Graduate School of Engineering , Osaka University , Yamadaoka 2-1, Suita , Osaka 565-0871 , Japan . ;
| | - Kaoru Shibuta
- Department of Applied Chemistry , Graduate School of Engineering , Osaka University , Yamadaoka 2-1, Suita , Osaka 565-0871 , Japan . ;
| | - Shohei Aoki
- Department of Applied Chemistry , Graduate School of Engineering , Osaka University , Yamadaoka 2-1, Suita , Osaka 565-0871 , Japan . ;
| | - Norimitsu Tohnai
- Department of Material and Life Science , Graduate School of Engineering , Osaka University , Yamadaoka 2-1, Suita , Osaka 565-0871 , Japan
| | - Satoshi Minakata
- Department of Applied Chemistry , Graduate School of Engineering , Osaka University , Yamadaoka 2-1, Suita , Osaka 565-0871 , Japan . ;
| |
Collapse
|
42
|
Takeda Y, Matsuno T, Sharma AK, Sameera WMC, Minakata S. Asymmetric Synthesis of β
2
‐Aryl Amino Acids through Pd‐Catalyzed Enantiospecific and Regioselective Ring‐Opening Suzuki–Miyaura Arylation of Aziridine‐2‐carboxylates. Chemistry 2019; 25:10226-10231. [DOI: 10.1002/chem.201902009] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Revised: 06/01/2019] [Indexed: 12/12/2022]
Affiliation(s)
- Youhei Takeda
- Department of Applied ChemistryGraduate School of EngineeringOsaka University Yamadaoka 2-1 Suita Osaka 565-0871 Japan
| | - Tetsuya Matsuno
- Department of Applied ChemistryGraduate School of EngineeringOsaka University Yamadaoka 2-1 Suita Osaka 565-0871 Japan
| | - Akhilesh K. Sharma
- Fukui Institute for Fundamental ChemistryKyoto University Takano-Nishishiraki-cho 34-4 Sakyo-ku Kyoto 606-8103 Japan
| | - W. M. C. Sameera
- Institute of Low Temperature ScienceHokkaido University Kita-ku, North 19 West 8 Sapporo Hokkaido 060-0819 Japan
| | - Satoshi Minakata
- Department of Applied ChemistryGraduate School of EngineeringOsaka University Yamadaoka 2-1 Suita Osaka 565-0871 Japan
| |
Collapse
|
43
|
Kiyokawa K, Okumatsu D, Minakata S. Synthesis of Hypervalent Iodine(III) Reagents Containing a Transferable (Diarylmethylene)amino Group and Their Use in the Oxidative Amination of Silyl Ketene Acetals. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201904971] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Kensuke Kiyokawa
- Department of Applied ChemistryGraduate School of EngineeringOsaka University Yamadaoka 2-1, Suita Osaka 565-0871 Japan
| | - Daichi Okumatsu
- Department of Applied ChemistryGraduate School of EngineeringOsaka University Yamadaoka 2-1, Suita Osaka 565-0871 Japan
| | - Satoshi Minakata
- Department of Applied ChemistryGraduate School of EngineeringOsaka University Yamadaoka 2-1, Suita Osaka 565-0871 Japan
| |
Collapse
|
44
|
Kiyokawa K, Okumatsu D, Minakata S. Synthesis of Hypervalent Iodine(III) Reagents Containing a Transferable (Diarylmethylene)amino Group and Their Use in the Oxidative Amination of Silyl Ketene Acetals. Angew Chem Int Ed Engl 2019; 58:8907-8911. [DOI: 10.1002/anie.201904971] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2019] [Indexed: 02/03/2023]
Affiliation(s)
- Kensuke Kiyokawa
- Department of Applied ChemistryGraduate School of EngineeringOsaka University Yamadaoka 2-1, Suita Osaka 565-0871 Japan
| | - Daichi Okumatsu
- Department of Applied ChemistryGraduate School of EngineeringOsaka University Yamadaoka 2-1, Suita Osaka 565-0871 Japan
| | - Satoshi Minakata
- Department of Applied ChemistryGraduate School of EngineeringOsaka University Yamadaoka 2-1, Suita Osaka 565-0871 Japan
| |
Collapse
|
45
|
Sharma AK, Sameera WMC, Takeda Y, Minakata S. Computational Study on the Mechanism and Origin of the Regioselectivity and Stereospecificity in Pd/SIPr-Catalyzed Ring-Opening Cross-Coupling of 2-Arylaziridines with Arylboronic Acids. ACS Catal 2019. [DOI: 10.1021/acscatal.9b01191] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Akhilesh K. Sharma
- Fukui Institute for Fundamental Chemistry, Kyoto University, Takano-Nishishiraki-cho, 34-4, Sakyo-ku, Kyoto 606-8103, Japan
| | - W. M. C. Sameera
- Institute of Low Temperature Science, Hokkaido University, Sapporo, Hokkaido 060-0819, Japan
| | - Youhei Takeda
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan
| | - Satoshi Minakata
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan
| |
Collapse
|
46
|
Omori H, Hiroto S, Takeda Y, Fliegl H, Minakata S, Shinokubo H. Ni(II) 10-Phosphacorrole: A Porphyrin Analogue Containing Phosphorus at the Meso Position. J Am Chem Soc 2019; 141:4800-4805. [DOI: 10.1021/jacs.8b13169] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hiroto Omori
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8603, Japan
| | - Satoru Hiroto
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8603, Japan
| | - Youhei Takeda
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan
| | - Heike Fliegl
- Institute of Nanotechnology, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Satoshi Minakata
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan
| | - Hiroshi Shinokubo
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8603, Japan
| |
Collapse
|
47
|
Kiyokawa K, Nakamura S, Jou K, Iwaida K, Minakata S. Transition-metal-free Intramolecular C–H amination of sulfamate esters and N-alkylsulfamides. Chem Commun (Camb) 2019; 55:11782-11785. [DOI: 10.1039/c9cc06410a] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The transition-metal-free intramolecular C–H amination of sulfamate esters and N-alkylsulfamides using iodine oxidants, tert-butyl hypoiodite (t-BuOI) and N-iodosuccinimide (NIS) is reported.
Collapse
Affiliation(s)
- Kensuke Kiyokawa
- Department of Applied Chemistry
- Graduate School of Engineering
- Osaka University
- Osaka 565-0871
- Japan
| | - Shogo Nakamura
- Department of Applied Chemistry
- Graduate School of Engineering
- Osaka University
- Osaka 565-0871
- Japan
| | - Keisuke Jou
- Department of Applied Chemistry
- Graduate School of Engineering
- Osaka University
- Osaka 565-0871
- Japan
| | - Kohji Iwaida
- Department of Applied Chemistry
- Graduate School of Engineering
- Osaka University
- Osaka 565-0871
- Japan
| | - Satoshi Minakata
- Department of Applied Chemistry
- Graduate School of Engineering
- Osaka University
- Osaka 565-0871
- Japan
| |
Collapse
|
48
|
Kiyokawa K, Hata S, Kainuma S, Minakata S. Electrophilic cyanation of allylic boranes: synthesis of β,γ-unsaturated nitriles containing allylic quaternary carbon centers. Chem Commun (Camb) 2019; 55:458-461. [DOI: 10.1039/c8cc09229j] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The electrophilic cyanation of allylic boranes, a process that enables the construction of allylic quaternary carbon centers, is reported.
Collapse
Affiliation(s)
- Kensuke Kiyokawa
- Department of Applied Chemistry
- Graduate School of Engineering
- Osaka University
- Yamadaoka 2-1, Suita
- Osaka 565-0871
| | - Shotaro Hata
- Department of Applied Chemistry
- Graduate School of Engineering
- Osaka University
- Yamadaoka 2-1, Suita
- Osaka 565-0871
| | - Shunpei Kainuma
- Department of Applied Chemistry
- Graduate School of Engineering
- Osaka University
- Yamadaoka 2-1, Suita
- Osaka 565-0871
| | - Satoshi Minakata
- Department of Applied Chemistry
- Graduate School of Engineering
- Osaka University
- Yamadaoka 2-1, Suita
- Osaka 565-0871
| |
Collapse
|
49
|
Kiyokawa K, Minakata S. Introduction of Oxygen or Nitrogen Functionalities Utilizing Iodine Reagents. J SYN ORG CHEM JPN 2018. [DOI: 10.5059/yukigoseikyokaishi.76.1310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Kensuke Kiyokawa
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University
| | - Satoshi Minakata
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University
| |
Collapse
|
50
|
Nagata T, Tamaki A, Kiyokawa K, Tsutsumi R, Yamanaka M, Minakata S. Cover Feature: Enantioselective Electrophilic Cyanation of Boron Enolates: Scope and Mechanistic Studies (Chem. Eur. J. 64/2018). Chemistry 2018. [DOI: 10.1002/chem.201805176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Takaya Nagata
- Department of Applied ChemistryGraduate School of EngineeringOsaka University Yamadaoka 2-1 Suita, Osaka 565-0871 Japan
| | - Atsuko Tamaki
- Department of ChemistryFaculty of ScienceRikkyo University 3-34-1 Nishi-Ikebukuro, Toshima-ku Tokyo 171-8501 Japan
| | - Kensuke Kiyokawa
- Department of Applied ChemistryGraduate School of EngineeringOsaka University Yamadaoka 2-1 Suita, Osaka 565-0871 Japan
| | - Ryosuke Tsutsumi
- Department of ChemistryFaculty of ScienceRikkyo University 3-34-1 Nishi-Ikebukuro, Toshima-ku Tokyo 171-8501 Japan
| | - Masahiro Yamanaka
- Department of ChemistryFaculty of ScienceRikkyo University 3-34-1 Nishi-Ikebukuro, Toshima-ku Tokyo 171-8501 Japan
| | - Satoshi Minakata
- Department of Applied ChemistryGraduate School of EngineeringOsaka University Yamadaoka 2-1 Suita, Osaka 565-0871 Japan
| |
Collapse
|