Enantioselective 1,3-Dipolar Cycloaddition of Nitrones Catalyzed by Optically Active Cationic Cobalt(III) Complexes

Enantioselective 1,3-Dipolar Cycloaddition of Nitrones Catalyzed by Optically Active Cationic Cobalt(III) Complexes

The optically active β-ketoiminato cationic cobalt(III) complexes were employed as efficient Lewis acid catalysts for the enantioselective 1,3-dipolar cycloaddition reaction of α,β-unsaturated aldehydes with nitrones. Excellent endo selectivities and high enantioselectivities were achieved in the cy...

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Veröffentlicht in:Organic letters 2002-07, Vol.4 (15), p.2457-2460
Hauptverfasser: Mita, Tsuyoshi, Ohtsuki, Natsuki, Ikeno, Taketo, Yamada, Tohru
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container_issue 15
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container_title Organic letters
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creator Mita, Tsuyoshi
Ohtsuki, Natsuki
Ikeno, Taketo
Yamada, Tohru
description The optically active β-ketoiminato cationic cobalt(III) complexes were employed as efficient Lewis acid catalysts for the enantioselective 1,3-dipolar cycloaddition reaction of α,β-unsaturated aldehydes with nitrones. Excellent endo selectivities and high enantioselectivities were achieved in the cycloaddition reaction of 1-cyclopentene-1-carbaldehyde and the nitrones derived from 2-halobenzaldehyde.
doi_str_mv 10.1021/ol026079p
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title Enantioselective 1,3-Dipolar Cycloaddition of Nitrones Catalyzed by Optically Active Cationic Cobalt(III) Complexes
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