The Insertion Reaction of Isoprene into Metal-Ethyl Bonds in Various Transition-Metal Salt-Ethylaluminum Compound System

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概要

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• The insertion reaction of isoprene into metal-ethyl bonds in various transition-metal salt (VCl<SUB>4</SUB>, Fe(AA)<SUB>3</SUB>, Co(AA)<SUB>2</SUB>, CoCl<SUB>2</SUB>, Ni(AA)<SUB>2</SUB>, or NiCl<SUB>2</SUB>-ethylaluminum compound (AlEt<SUB>2</SUB>Cl or AlEt<SUB>3</SUB>)) catalyst systems was studied. With the vanadium and the nickel catalysts, 2-methyl-2-hexene and 2-methyl- 1-hexene were mainly formed by the methanolysis of the reaction mixture, showing that metal alkenyls, (<U>Remark: Graphics omitted.</U>) and (<U>Remark: Graphics omitted.</U>) respectively, are formed in the reaction system. However, in the iron catalyst, only 2-methyl-2,5-hexadiene and 3-methyl-2,5-hexadiene were formed from (<U>Remark: Graphics omitted.</U>) and (<U>Remark: Graphics omitted.</U>) respectively by the elimination reaction. These results suggest that the stability of metal alkenyls decreases in the order: V>>Ni>Co>Fe.

• 公益社団法人 日本化学会の論文

著者

• SUZUKI Toshimitsu

  Department of Chemical Engineering

• Takegami Yoshinobu

  Department of Fuel Chemistry Faculty of Engineering Kyoto University

• Shirai Takashi

  Department of Hydrocarbon Chemistry, Faculty of Engineering, Kyoto University

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