1995 Fiscal Year Final Research Report Summary
Synthesis of Non-prophyrine Complexes and their synthetic application
| Project/Area Number |
06651004
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| Research Category |
Grant-in-Aid for General Scientific Research (C)
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| Allocation Type | Single-year Grants |
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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 Materials Science, Professor, 工学部, 教授 (40135421)
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| Project Period (FY) |
1994 – 1995
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| Keywords | pyridine / complex / carbene / oxidation / ruthenium / cyclopropanation / diazocompounds |
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| Research Abstract |
Non-porphyrine transition-metal complexesas as a basic design were syntheized. They have a pyridine skeleton and two oxazoline groups. Their structures were determined by singl crystal X-ray analysis. In the complexes, the lingad part is combining to the metal center strongly. The complexes having halogens, CO,or ethylene were also synthesized. The activity of oxidation withtheir complexes were examined to show non-selective oxidation of olefins. Aspreported in porphyrine system, the pyridine-oxazoline, non-porphyrine sytemact as carbene acceptor with diazoacetates and cyclopropene derivative. We discoved a stereospecific carbene transferreaction to stirene to give high trans selectivity, more than 95%. We can define a mechanism of carbene transfer from the complexes to olefins. The characteristic signals for the carbene unit=CH-were observed by NMR spectroscopy. In general, porphyrine systems were not easy to synthesis. However, our desinged pyridine-oxazoline ligans with ruthenium metal act very silimarly for oxidation and cyclopropanation. In next steps, we are expecting to demonstrate high catalytic activity of their complexes.
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Research Products
(8 results)
