1
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Kako M, Kai M, Yasui M, Yamada M, Maeda Y, Akasaka T. Two-fold addition reaction of silylene to C 60: structural and electronic properties of a bis-adduct. Beilstein J Org Chem 2024; 20:1179-1188. [PMID: 38887572 PMCID: PMC11181185 DOI: 10.3762/bjoc.20.100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Accepted: 04/30/2024] [Indexed: 06/20/2024] Open
Abstract
The addition reaction of C60 with silylene 1, a silicon analog of carbene, yielded the corresponding bis-adduct 3. The structure of 3 was determined by single-crystal X-ray structure analysis, representing the first example of a crystal structure of a silirane (silacyclopropane) derivative of fullerenes. Electrochemical measurements confirmed that the redox potentials of 3 are shifted cathodically compared to those of the parent mono-adduct 2. Density functional theory (DFT) calculations provided the basis for the electronic properties of compound 3.
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Affiliation(s)
- Masahiro Kako
- Department of Engineering Science, The University of Electro-Communications, Chofu 182-8585, Japan
| | - Masato Kai
- Department of Engineering Science, The University of Electro-Communications, Chofu 182-8585, Japan
| | - Masanori Yasui
- Department of Engineering Science, The University of Electro-Communications, Chofu 182-8585, Japan
| | - Michio Yamada
- Department of Chemistry, Tokyo Gakugei University, Tokyo 184-8501, Japan
| | - Yutaka Maeda
- Department of Chemistry, Tokyo Gakugei University, Tokyo 184-8501, Japan
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2
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Yanagisawa D, Ishida S, Iwamoto T. Silacyclopropenylsilylene-NHC Complex: Synthesis by (1+2) Retro-cycloaddition, Dynamic Behavior in Solution, and Ring-expansion Reaction. CHEM LETT 2023. [DOI: 10.1246/cl.220528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Affiliation(s)
- Daichi Yanagisawa
- Department of Chemistry, Graduate School of Science, Tohoku University, Aoba-ku, Sendai, Miyagi 980-8578, Japan
| | - Shintaro Ishida
- Department of Chemistry, Graduate School of Science, Tohoku University, Aoba-ku, Sendai, Miyagi 980-8578, Japan
| | - Takeaki Iwamoto
- Department of Chemistry, Graduate School of Science, Tohoku University, Aoba-ku, Sendai, Miyagi 980-8578, Japan
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3
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Mizuhata Y, Tokitoh N, Oshiro T. Reaction of an Overcrowded 1,2-Diaryl-1,2-dibromodisilene with 1-Vinylcyclohepta-1,3,5-triene: Isolation of a 2-Vinylsilacyclopropane Derivative and Its Thermal Conversion to a Silacyclopent-3-ene Derivative. HETEROCYCLES 2022. [DOI: 10.3987/com-21-14585] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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4
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Pichaandi KR, Mague JT, Fink MJ. Crystal structures of three sterically congested disilanes. Acta Crystallogr E Crystallogr Commun 2017; 73:448-452. [PMID: 28316829 PMCID: PMC5347074 DOI: 10.1107/s2056989017002602] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2017] [Accepted: 02/14/2017] [Indexed: 11/10/2022]
Abstract
In the three sterically congested silanes, C24H38Si2 (1) (1,1,2,2-tetra-isopropyl-1,2-di-phenyl-disilane), C24H34Br4Si2 (2) [1,1,2,2-tetra-kis-(2-bromo-propan-2-yl)-1,2-di-phenyl-disilane] and C32H38Si2 (3) (1,2-di-tert-butyl-1,1,2,2-tetra-phenyl-disilane), the Si-Si bond length is shortest in (1) and longest in (2), with (3) having an inter-mediate value, which parallels the increasing steric congestion. A comparison of the two isopropyl derivatives, (1 and 2), shows a significant increase in the Si-C(ipso) distance with the introduction of bromine. Also, in the brominated compound 2, attractive inter-molecular Br⋯Br inter-actions exist with Br⋯Br separations ca 0.52 Å shorter than the sum of the van der Waals radii. In compound 2, one of the bromo-isopropyl groups is rotationally disordered in an 0.8812 (9):0.1188 (9) ratio. Compound 3 exhibits 'whole mol-ecule' disorder in a 0.9645 (7):0.0355 (7) ratio with the Si-Si bonds in the two components making an angle of ca 66°.
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Affiliation(s)
| | - Joel T. Mague
- Department of Chemistry, Tulane University, New Orleans, LA 70118, USA
| | - Mark J. Fink
- Department of Chemistry, Tulane University, New Orleans, LA 70118, USA
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5
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Lips F, Fettinger JC, Mansikkamäki A, Tuononen HM, Power PP. Reversible Complexation of Ethylene by a Silylene under Ambient Conditions. J Am Chem Soc 2014; 136:634-7. [DOI: 10.1021/ja411951y] [Citation(s) in RCA: 74] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Felicitas Lips
- Department
of Chemistry, University of California, One Shields Avenue, Davis, California 95616, United States
| | - James C. Fettinger
- Department
of Chemistry, University of California, One Shields Avenue, Davis, California 95616, United States
| | - Akseli Mansikkamäki
- Department
of Chemistry, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
| | - Heikki M. Tuononen
- Department
of Chemistry, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
| | - Philip P. Power
- Department
of Chemistry, University of California, One Shields Avenue, Davis, California 95616, United States
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6
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Ishida S, Sugawara R, Misawa Y, Iwamoto T. Palladium and Platinum η2-Disilyne Complexes Bearing an Isolable Dialkyldisilyne as a Ligand. Angew Chem Int Ed Engl 2013; 52:12869-73. [DOI: 10.1002/anie.201308517] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2013] [Indexed: 11/05/2022]
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7
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Ishida S, Sugawara R, Misawa Y, Iwamoto T. Palladium and Platinum η2-Disilyne Complexes Bearing an Isolable Dialkyldisilyne as a Ligand. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201308517] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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8
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Leibeling M, Werz DB. Flexible synthesis of anthracycline aglycone mimics via domino carbopalladation reactions. Beilstein J Org Chem 2013; 9:2194-201. [PMID: 24204433 PMCID: PMC3817477 DOI: 10.3762/bjoc.9.258] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2013] [Accepted: 10/08/2013] [Indexed: 02/06/2023] Open
Abstract
A synthesis of anthracycline aglycone derivatives is described. The key step utilizes a powerful domino carbopalladation approach and subsequent ring closure. During this process two of the four rings of the anthracycline scaffold are formed. Differently substituted carbohydrates and dialkyne chains serve as versatile and simple starting materials for the reaction sequence. Diverse building blocks lead to a variety of different products and a broad range of structural diversity.
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Affiliation(s)
- Markus Leibeling
- Institut für Organische Chemie, Technische Universität Braunschweig, Hagenring 30, 38106 Braunschweig, Germany
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9
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Cho HM, Bok K, Park SH, Lim YM, Lee ME, Choi MG, Lee KM. A New Synthetic Route for Silacyclopropanes: Reactions of a Bromosilylenoid with Olefins. Organometallics 2012. [DOI: 10.1021/om3005349] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hyeon Mo Cho
- Research & Education Center for Advanced Silicon Materials, Department of Chemistry & Medical Chemistry, College of Science and Technology, Yonsei University, Wonju, Gangwondo 220-710, Korea
| | - Kyongjin Bok
- Research & Education Center for Advanced Silicon Materials, Department of Chemistry & Medical Chemistry, College of Science and Technology, Yonsei University, Wonju, Gangwondo 220-710, Korea
| | - Seo Hyeon Park
- Research & Education Center for Advanced Silicon Materials, Department of Chemistry & Medical Chemistry, College of Science and Technology, Yonsei University, Wonju, Gangwondo 220-710, Korea
| | - Young Mook Lim
- Research & Education Center for Advanced Silicon Materials, Department of Chemistry & Medical Chemistry, College of Science and Technology, Yonsei University, Wonju, Gangwondo 220-710, Korea
| | - Myong Euy Lee
- Research & Education Center for Advanced Silicon Materials, Department of Chemistry & Medical Chemistry, College of Science and Technology, Yonsei University, Wonju, Gangwondo 220-710, Korea
| | - Moon-Gun Choi
- Department of Chemistry & Molecular Structure Laboratory, Yonsei University, Seoul 120-749, Korea
| | - Kang Mun Lee
- Department of Chemistry, KAIST, Daejeon 305-701, Korea
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