1998 Fiscal Year Final Research Report Summary
Synthesis and Application of Highly Coordinated Nitrogen-Ligands
| Project/Area Number |
08455425
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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 |
Synthetic chemistry
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| Research Institution | Toyohashi University of Technology |
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Principal Investigator |
NISHIYAMA Hisao Toyohashi University of Technology, Faculty of Engineering, School of Materials Science, Professor, 工学部, 教授 (40135421)
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| Project Period (FY) |
1996 – 1998
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| Keywords | nitrogen ligand / optically active / asymmetric induction / stereo control / catalysis |
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| Research Abstract |
1) Highly coordinated nitrogen-ligands were synthesized to be applied to asymmetric catalytic cylcopropanation of olefins with ruthenium catalysis. The intermediate carbene complexes were determined by NMR and X-ray analysis, and its geometry and moleculer orbitals were considered.
2) Single chiral version of nitrogen-ligand were discovered and applied to asymmetric cyclopropanation to give high enantioselectivity.
3) Chiral oxazoline ligand designed in this research exhibited high efficiency in asymmetric cylcopropanation over 80% ees.
4) New nitrogen-benzene ligands were developed for asymmetric catalysis. One of them exhibited high efficiency in asymmetric allylation of aldehydes, and the catalyst proved to be recovered for reuse.
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[Publications] Mizushima, K. ; Nakaura, M. ; Park, S.-B. ; H.Nishiyama ; Monjushiro, H. ; Harada, K. ; Haga, M.: "Ruthenium (II) complexes with the terdentate 6,6'-bis (oxazolinyl or benzimidazolyl)-2,2'-bipyridine ligand : syntehsis, electrochemixal properties, and catalytic reactivities" Inorg, Chim.Acta. 261. 175 (1997)
Description
「研究成果報告書概要(欧文)」より
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