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Issue 10, 2014

Acceptorless dehydrogenative coupling of primary alcohols to esters by heterogeneous Pt catalysts

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Abstract

Supported platinum catalysts have been studied for the acceptor-free dehydrogenative coupling of primary alcohols to esters in the liquid phase under solvent-free conditions in N2 at 180 °C. The activity depends on the support material, and Pt-loaded SnO2 (Pt/SnO2) gives the highest activity. Pt/SnO2 shows higher activity than various transition metals (Ir, Re, Ru, Rh, Pd, Ag, Co, Ni, Cu) loaded on SnO2. The Pt/SnO2 catalyst (1 mol%) selectively converted various primary alcohols to their corresponding esters in moderate to high isolated yield (53–91%). This is the first example of reusable heterogeneous catalysts for the acceptor-free dehydrogenative coupling of primary alcohols to esters under additive-free and solvent-free conditions. Mechanistic and infrared (IR) studies are also shown to discuss the reaction pathway and a possible role of the SnO2 support as Lewis acid sites that activate carbonyl groups of adsorbed aldehyde intermediates.

Graphical abstract: Acceptorless dehydrogenative coupling of primary alcohols to esters by heterogeneous Pt catalysts

Supplementary files

Article information


Submitted
29 Jul 2014
Accepted
06 Aug 2014
First published
08 Aug 2014

Catal. Sci. Technol., 2014,4, 3631-3635
Article type
Communication

Acceptorless dehydrogenative coupling of primary alcohols to esters by heterogeneous Pt catalysts

S. K. Moromi, S. M. A. Hakim Siddiki, Md. A. Ali, K. Kon and K. Shimizu, Catal. Sci. Technol., 2014, 4, 3631 DOI: 10.1039/C4CY00979G

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