Manganese and cobalt 3-oxobutylideneaminato complexes

Design and application for enantioselective reactions

Tohru Yamada, Taketo Ikeno, Yuhki Ohtsuka, Satoko Kezuka, Mitsuo Sato, Izumi Iwakura

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

The optically active 3-oxobutylideneaminato transition-metal complexes have been developed as efficient catalysts for a variety of enantioselective reactions; e.g. the corresponding manganese(III) complexes catalyzed the enantioselective aerobic epoxidation of unfunctionalized olefins, and the corresponding cobalt complexes have been developed for the enantioselective borohydride reduction of various carbonyl compounds. The cobalt complexes could also be employed for the catalytic enantioselective cyclopropanation with diazoacetates and the Lewis acid catalyses such as the hetero Diels-Alder reaction, carbonyl-ene reaction, and 1,3-dipolar cycloaddition of nitrones. In the presence of the cobalt complex, the Henry reaction proceeded with a high enantioselectivity, and the enantioselective chemical fixation of carbon dioxide to obtain the optically active cyclic carbonate. In these Lewis acid catalyses, the valence of cobalt and the counter anion have significant effects on the reaction rate and stereoselectivity.

Original languageEnglish
Pages (from-to)184-196
Number of pages13
JournalScience and Technology of Advanced Materials
Volume7
Issue number2
DOIs
Publication statusPublished - 2006 Mar

Fingerprint

Manganese
Cobalt
Lewis Acids
Stereoselectivity
Borohydrides
Carbonyl compounds
Epoxidation
Cycloaddition
Acids
Enantioselectivity
Carbonates
Coordination Complexes
Alkenes
Metal complexes
Carbon Dioxide
Olefins
Reaction rates
Transition metals
Anions
Carbon dioxide

Keywords

  • Aerobic oxidation
  • Borohydride reduction
  • Carbon dioxide
  • Cobalt
  • Enantioselective reaction
  • Lewis acid
  • Manganese
  • Schiff base

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Manganese and cobalt 3-oxobutylideneaminato complexes : Design and application for enantioselective reactions. / Yamada, Tohru; Ikeno, Taketo; Ohtsuka, Yuhki; Kezuka, Satoko; Sato, Mitsuo; Iwakura, Izumi.

In: Science and Technology of Advanced Materials, Vol. 7, No. 2, 03.2006, p. 184-196.

Research output: Contribution to journalArticle

Yamada, Tohru ; Ikeno, Taketo ; Ohtsuka, Yuhki ; Kezuka, Satoko ; Sato, Mitsuo ; Iwakura, Izumi. / Manganese and cobalt 3-oxobutylideneaminato complexes : Design and application for enantioselective reactions. In: Science and Technology of Advanced Materials. 2006 ; Vol. 7, No. 2. pp. 184-196.
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