| Budget Amount *help |
¥2,200,000 (Direct Cost: ¥2,200,000)
Fiscal Year 1995: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1994: ¥1,600,000 (Direct Cost: ¥1,600,000)
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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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