2006 Fiscal Year Final Research Report Summary
Development of Novel Methods for Construction of Macrocyclic Molecules by Utilizing the Characteristics of Highly Coordinated Main-Group Elements
| Project/Area Number |
17350015
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Organic chemistry
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| Research Institution | Tokyo Institute of Technology (2006)
The University of Tokyo (2005) |
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Principal Investigator |
GOTO Kei Tokyo Institute of Technology, Graduate School of Science and Engineering, Associate Professor, 大学院・理工学研究科, 助教授 (70262144)
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| Project Period (FY) |
2005 – 2006
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| Keywords | highly coordinated main-group elements / silicon compounds / macrocyclic compounds / nano-size molecules / cage-type molecules / hypervalent bonding / X-ray crystallographic analysis / thermodynamic control |
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| Research Abstract |
The design and construction of nano-size macrocyclic compounds has been attracting increasing attention. The hypervalent bonding interaction of highly coordinated main-group elements is considered to be versatile for the construction of such type of nano-size architecture because it has moderate strength and well-defined geometric characters. In this study, the construction of nano-size macrocycles by utilizing the characteristics of highly coordinated silicon was investigated. A biphenyl derivative containing highly coordinated hydrosilane units at both ends was allowed to react with various diols such as 1,4-butanediol and 4,4'-biphenol, and the corresponding square-shaped macrocycles were obtained by just heating without addition of any other reagents or catalysts. In the reaction of a 1,3,5-triarylbenzene containing highly coordinated hydrosilane units at three ends with 4,4'-biphenol, the corresponding prism-type molecular capsule was obtained in 87% yield. The structures of these macrocycles were established by X-ray crystallographic analysis. Monitoring of the reactions by ^1H NMR and GPC indicated that polymeric intermediates were formed at the early stage of the reaction, which were converted to the macrocycles by prolonged heating under thermodynamic control.
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[Journal Article] Formation of a Stable Sulfenic Acid by Hydrolysis of a Thionitrate and a Sulfenyl Bromide2006
Author(s)
Goto, K., Shimada, K., Furukawa, S., Miyasaka, S., Takahashi, Y., Kawashima, T.
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Journal Title
Chem.Lett. 35
Pages: 862-863
Description
「研究成果報告書概要(欧文)」より
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[Journal Article] Theoretical Evidence for Enhanced NO Dimerization in Aromatic Hosts : Implications for the Role of the Electrophile (NO)_2 in Nitric Oxide Chemistry2005
Author(s)
Zhao, Y.-L., Bartberger, M.D., Goto, K., Shimada, K., Kawashima, T., Houk, K.N.
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Journal Title
J. Am. Chem. Soc. 127
Pages: 7964-7965
Description
「研究成果報告書概要(欧文)」より
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