2019 Fiscal Year Final Research Report

Multi-functional Rare Earth Catalysts for Precision Chemical Transformation

Research Project

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Project/Area Number	17K05824
Research Category	Grant-in-Aid for Scientific Research (C)
Allocation Type	Multi-year Fund
Section	一般
Research Field	Inorganic chemistry
Research Institution	Institute of Physical and Chemical Research
Principal Investigator	Nishiura Masayoshi 国立研究開発法人理化学研究所, 開拓研究本部, 専任研究員 (30332258)
Project Period (FY)	2017-04-01 – 2020-03-31
Keywords	希土類金属 / シクロペンタジエニル基 / C-H結合活性化 / 非極性オレフィンと極性オレフィンの共重合 / 自己修復材料
Outline of Final Research Achievements	This project aimed to develop new catalysts, new reactions and new functional materials superior or complementary to the existing ones. By using half-sandwich rare-earth catalysts, we have achieved for the first time the copolymerization of ethylene and polar alpha-olefins in a controlled fashion, which afforded new functional polyolefins with excellent self-healing and shape-memory properties. We have synthesized a series of chiral half-sandwich rare-earth alkyl complexes that show excellent enantioselectivity and activity in various transformations such as asymmetric C-H alkylation via C=C insertion. This work has not only opened up new avenues in chemical science, but may also offer new entries into chemical industry innovation.
Free Research Field	有機金属化学、有機合成化学、高分子化学
Academic Significance and Societal Importance of the Research Achievements	本研究の成果は、有機金属化学や触媒化学、有機合成化学、高分子合成化学などの基礎科学分野の新しいフロンティアの開拓のみならず、新たな知財の形成や新産業の創出にもつながることが期待できる。例えば、本研究を通して創製された新規自己修復ポリマーは、空気中だけでなく、水や酸、アルカリ性水溶液中でも優れた自己修復性能や形状記憶性能を示し、従来のものでは見られない実用性の高い新機能性材料として多方面から大きな期待が寄せられている。