Synthesis And Characterization Of Novel Ruthenium-carbene Catalysts And Novel Borates

This thesis is composed of two aspects:Partâ… Synthesis and characterization of novel carbene ruthenium catalystsIn recent years, the olefin metathesis reaction has attracted widespread attention as a versatile carbon-carbon bond-forming method. Grubbs I [(PCy₃)₂Cl₂Ru=CHPh] is a new and important catalyst. Many new applications have been possible because of major advances in catalyst design.Ferrocene is an aromatic and electron donating group, and has redox property without structural damage. Treatment of (PCy₃)₂Cl₂Ru=CHPh with ligands of ferrocenyl ethene and p-ferrocenyl phenyl ethene that contain ferrocene group respectively yield solid prodcuts of ferrocenyl carbene ruthenium catalyst and p-ferrocenyl phenyl carbene ruthenium catalyst. The two catalysts were characterized by ¹H NMR and tested for activity.In addition, during synthesis of p-ferrocenyl phenyl carbene ruthenium catalyst, 1,2-bis(4'-ferrocenylphenyl)ethene was obtained as the exchanging ligand catalysate. The crystal structure of 1,2-bis(4'-ferrocenylphenyl) ethene was determined by X-ray diffraction.Partâ…¡Synthesis and characterization of new boratesOrganoborane compounds had been one of most important areas and the research and application were mature, so borates gained widespread application. Using new achievements in organic chemistry to synthesis borates or improving the original preparation methods was the main research in recent years.In the thesis, treatment of 2-bromo-6-tert-butylphenol and 2-bromo-6- methylphenol with butyl lithium yield dilithium compounds, and then treat the dilithium compounds with triphenylborane to obtain novel coupling compounds. The coupling compounds were characterized and analysed by IR,¹H NMR,¹³C NMR, 11B NMR and X-ray diffraction.