2015 Fiscal Year Final Research Report
Rare Earth-Catalyzed Precision Copolymerization for High Performance Polymer Materials
| Project/Area Number |
24350030
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Partial Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Inorganic chemistry
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| Research Institution | Institute of Physical and Chemical Research |
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Principal Investigator |
Nishiura Masayoshi 国立研究開発法人理化学研究所, 侯有機金属化学研究室, 専任研究員 (30332258)
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| Project Period (FY) |
2012-04-01 – 2016-03-31
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| Keywords | スカンジウム / 共重合 / オレフィン / C-H結合活性化 |
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| Outline of Final Research Achievements |
By use of the catalyst bearing a phosphine oxide group (C5Me4SiMe2CH2P(O)Ph2)Sc(CH2SiMe3)2, the alternating copolymerizations of IP with HPD have been achieved for the first time, in which HPD is completely cyclized to the methylcyclohexane units. We found that cationic half-sandwich yttrium alkyl complexes can catalyze the addition of benzylic C-H bonds of various 2,6-dialkyl-substituted pyridines to a variety of olefins such as 1-hexene and styrenes, to afford new alkylated pyridine derivatives. By using the half-sandwich scandium diaminobenzyl complex (C5Me4SiMe3)Sc(CH2C6H4NMe2-o)2 with borate [Ph3C][B(C6F5)4], the syndiospecific chain transfer polymerization of styrene proceeded efficiently via the ortho-C-H bond activation of anisoles, affording the corresponding end-ortho-anisyl-functionalized syndiotactic polystyrenes.
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| Free Research Field |
化学
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