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Issue 5, 2012
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Visible light photoredox organocatalysis: a fully transition metal-free direct asymmetric α-alkylation of aldehydes

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Abstract

Rose Bengal, a dye sensitizer, was found to be active as a visible light photoredox catalyst for the direct enantioselective α-alkylation of aldehydes in environmentally benign and simple conditions. Starting from a SOMO converse mechanism, the catalytic activity of the imidazolidinone organocatalyst was improved using an electrophilic cocatalyst. The resulting methodology and optimal conditions led to efficient and transition-metal-free direct photoredox organocatalysis.

Graphical abstract: Visible light photoredox organocatalysis: a fully transition metal-free direct asymmetric α-alkylation of aldehydes

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Publication details

The article was received on 25 Jan 2012, accepted on 05 Mar 2012 and first published on 06 Mar 2012


Article type: Communication
DOI: 10.1039/C2GC35118H
Citation: Green Chem., 2012,14, 1293-1297
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    Visible light photoredox organocatalysis: a fully transition metal-free direct asymmetric α-alkylation of aldehydes

    K. Fidaly, C. Ceballos, A. Falguières, M. S. Veitia, A. Guy and C. Ferroud, Green Chem., 2012, 14, 1293
    DOI: 10.1039/C2GC35118H

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