title: Selective Hydrosilylation of Esters to Aldehydes Catalysed by Iridium(III) Metallacycles through Trapping of Transient Silyl Cations.
abstract: The combination of an iridium(III) metallacycle and 1,3,5-trimethoxybenzene catalyses rapidly and selectively the reduction of esters to aldehydes at room temperature with high yields through hydrosilylation followed by hydrolysis. The ester reduction involves the trapping of transient silyl cations by the 1,3,5-trimethoxybenzene co-catalyst, supposedly by formation of an arenium intermediate whose role was addressed by DFT calculations.
authors.affiliation: Univ. Lille, CNRS, Centrale Lille, ENSCL, Univ. Artois, UMR 8181, UCCS - Unité de Catalyse et Chimie du Solide, 59000, Lille, France.|ENSCL, UCCS-CCM-CASECO, (Chimie-C7) CS 90108, 59652, Villeneuve d'Ascq Cedex, France.
authors.forename: Yann
authors.initials: Y
authors.lastname: Corre
authors.affiliation: Univ. Lille, CNRS, Centrale Lille, ENSCL, Univ. Artois, UMR 8181, UCCS - Unité de Catalyse et Chimie du Solide, 59000, Lille, France.|ENSCL, UCCS-CCM-CASECO, (Chimie-C7) CS 90108, 59652, Villeneuve d'Ascq Cedex, France.
authors.forename: Vincent
authors.initials: V
authors.lastname: Rysak
authors.affiliation: Univ. Lille, CNRS, Centrale Lille, ENSCL, Univ. Artois, UMR 8181, UCCS - Unité de Catalyse et Chimie du Solide, 59000, Lille, France.
authors.forename: Frédéric
authors.initials: F
authors.lastname: Capet
authors.affiliation: Institut de Chimie de Strasbourg, UMR 7177, Université de Strasbourg, 4 rue Blaise Pascal, 67000, Strasbourg, France.
authors.forename: Jean-Pierre
authors.initials: JP
authors.lastname: Djukic
authors.affiliation: Univ. Lille, CNRS, Centrale Lille, ENSCL, Univ. Artois, UMR 8181, UCCS - Unité de Catalyse et Chimie du Solide, 59000, Lille, France. francine.agbossou@ensc-lille.fr.|ENSCL, UCCS-CCM-CASECO, (Chimie-C7) CS 90108, 59652, Villeneuve d'Ascq Cedex, France. francine.agbossou@ensc-lille.fr.
authors.forename: Francine
authors.initials: F
authors.lastname: Agbossou-Niedercorn
authors.affiliation: Univ. Lille, CNRS, Centrale Lille, ENSCL, Univ. Artois, UMR 8181, UCCS - Unité de Catalyse et Chimie du Solide, 59000, Lille, France. christophe.michon@ensc-lille.fr.|ENSCL, UCCS-CCM-CASECO, (Chimie-C7) CS 90108, 59652, Villeneuve d'Ascq Cedex, France. christophe.michon@ensc-lille.fr.
authors.forename: Christophe
authors.initials: C
authors.lastname: Michon
keywords: aldehydes; homogeneous catalysis; hydrosilylation; iridium; synthetic methods