Keywords
catalysis
chelating ligands
hemilabile
Ketones
N-heterocyclic carbene
Nitron
ruthenium complexes
secondary alcohols.
transfer hydrogenation
Abstract
A series of novel ruthenium(II) complexes with nitron-type N-heterocyclic carbene ligands containing chelating (N-arylcarbamoyl)methyl or carboxymethyl groups have been synthesized. Their evaluation as precatalysts in the hydrogenation of ketones has revealed that the complex containing three N-mesityl groups (one on the carbamoyl- methyl moiety and two on the triazole moiety) is the most efficient one.
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