Hydrogenation of Carboxylic Esters Catalyzed by Phosphine-Free Bis-N-heterocyclic Carbene Manganese Complexes

As an earth-abundant transition metal, manganese is now recognized as a good candidate for the development of catalysts for reduction-type reactions. It is often associated with a noninnocent tridentate ligand, featuring an acidic NH moiety. We report here that a simple bidentate and phosphine-free...

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Bibliographic Details
Published in:Organometallics 2023-07, Vol.42 (14), p.1832-1838
Main Authors: Azouzi, Karim, Pedussaut, Lucie, Pointis, Romane, Bonfiglio, Anna, Kumari Riddhi, Riddhi, Duhayon, Carine, Bastin, Stéphanie, Sortais, Jean-Baptiste
Format: Article
Language:English
Subjects:
Chemical Sciences
Coordination chemistry
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Summary:As an earth-abundant transition metal, manganese is now recognized as a good candidate for the development of catalysts for reduction-type reactions. It is often associated with a noninnocent tridentate ligand, featuring an acidic NH moiety. We report here that a simple bidentate and phosphine-free bis-N-heterocyclic ligand associated with manganese in the complex [Mn­(bis-NHCMes)­(CO)3Br] could catalyze the hydrogenation of carboxylic esters in the presence of KBHEt3 as an activator at 100–120 °C under 50 bar of H2 at 1 mol % catalyst loading in 2-Me-THF.
ISSN:0276-7333
1520-6041
DOI:10.1021/acs.organomet.3c00137