Bidentate Ru(II)-NC Complex as a Catalyst for Semihydrogenation of Azoarenes to Hydrazoarenes with Ethanol
Dawei Gong, Degong Kong, Na Xu, Yuhui Hua, Bo Liu, Zhanlin Xu
Abstract
The transfer hydrogenation of azoarenes to hydrazoarenes using ethanol as a hydrogen source by a bidentate Ru(II)-NC complex is developed. A weak base is crucial for this semihydrogenation that can efficiently avoid hydrazoarene dehydrogenation under strongly basic conditions. Control experiments and density functional theory calculations demonstrate the mechanism via a Meerwein-Ponndorf-Verley mechanism, and the only byproduct is ethyl acetate. This study offers a new and simple approach for the synthesis of hydrazoarenes.
Topics & Concepts
ChemistryDehydrogenationDenticityCatalysisEthanolCombinatorial chemistryDensity functional theoryBase (topology)Computational chemistryOrganic chemistryMetalMathematical analysisMathematicsAsymmetric Hydrogenation and CatalysisCarbon dioxide utilization in catalysisNanomaterials for catalytic reactions