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Article Dans Une Revue Journal of Catalysis Année : 2024

Hydrogenation of carboxylic esters catalyzed by manganese catalysts supported by bidentate NHC-phosphine ligands

Ruqaya Buhaibeh
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Anna Bonfiglio
Carine Duhayon
Dmitry A. Valyaev
Yves Canac

Résumé

A series of bidentate manganese complexes with a general structure [(κ2C,P-R2PCH2CH2-NHC)Mn(CO)3Br] (NHC = N-substituted imidazolylidene) was prepared and fully characterized. These complexes were proven to be efficient catalysts for the hydrogenation of carboxylic ester derivatives with a low catalyst loading (0.5 mol%) in 2-Me-THF at 100 °C in the presence of KHBEt3. The generality of this hydrogenation was exemplified with more than 25 substrates. Experimental and computational investigations allowed to propose a rational mechanism involving an anionic tricarbonyl manganese hydride complex as the active species.
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Dates et versions

hal-04432103 , version 1 (01-02-2024)

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Karim Azouzi, Romane Pointis, Ruqaya Buhaibeh, Pablo Hermosilla Fernández, Lucie Pedussaut, et al.. Hydrogenation of carboxylic esters catalyzed by manganese catalysts supported by bidentate NHC-phosphine ligands. Journal of Catalysis, 2024, Journal of Catalysis, 430, pp.115334. ⟨10.1016/j.jcat.2024.115334⟩. ⟨hal-04432103⟩
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