Volume 126, Issue 36 pp. 9767-9770
Zuschrift

Light-Driven Organocatalysis Using Inexpensive, Nontoxic Bi2O3 as the Photocatalyst

Dr. Paola Riente

Dr. Paola Riente

Institute of Chemical Research of Catalonia (ICIQ), Avda.Països Catalans 16, 43007 Tarragona (Spain)

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Alba Matas Adams

Alba Matas Adams

Institute of Chemical Research of Catalonia (ICIQ), Avda.Països Catalans 16, 43007 Tarragona (Spain)

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Dr. Josep Albero

Dr. Josep Albero

Institute of Chemical Research of Catalonia (ICIQ), Avda.Països Catalans 16, 43007 Tarragona (Spain)

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Prof. Emilio Palomares

Corresponding Author

Prof. Emilio Palomares

Institute of Chemical Research of Catalonia (ICIQ), Avda.Països Catalans 16, 43007 Tarragona (Spain)

Catalan Institution for Research and Advanced Studies (ICREA), Avda. Lluis Companys 23, 08010 Barcelona (Spain)

Institute of Chemical Research of Catalonia (ICIQ), Avda.Països Catalans 16, 43007 Tarragona (Spain)Search for more papers by this author
Prof. Miquel A. Pericàs

Corresponding Author

Prof. Miquel A. Pericàs

Institute of Chemical Research of Catalonia (ICIQ), Avda.Països Catalans 16, 43007 Tarragona (Spain)

Department de Química Orgànica, Universitat de Barcelona c/Martí i Franqués 1-11, 08028 Barcelona (Spain)

Institute of Chemical Research of Catalonia (ICIQ), Avda.Països Catalans 16, 43007 Tarragona (Spain)Search for more papers by this author
First published: 07 July 2014
Citations: 26

This work was funded by MINECO (CTQ2012-38594-C02-01), DEC (2009SGR623), and the ICIQ Foundation.

Abstract

The development of enantioselective catalytic processes that make use of sunlight as the energy source and nontoxic, affordable materials as catalysts represents one of the new and rapidly evolving areas in chemical research. The direct asymmetric α-alkylation of aldehydes with α-bromocarbonyl compounds can be successfully achieved by combining bismuth-based materials as low-band-gap photocatalysts with the second-generation MacMillan imidazolidinone as the chiral catalyst and simulated sunlight as a low-cost and clean energy source. This reaction also proceeded with high efficiency when the reaction vial was exposed to the morning sunlight on a clear September day in Tarragona, Spain.

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