N-Methylation of amine and nitro compounds with CO2/H2 catalyzed by Pd/CuZrOx under mild reaction conditions

Abstract

An active Pd/ZrCuO_x catalyst was prepared for the reductive amination of CO₂. The N-methylation of amines and nitro compounds with CO₂/H₂ can be realized with up to 97% yield under relatively mild reaction conditions. N-Formylation becomes the main reaction if the reaction was performed under milder conditions or using Pd/ZnZrO_x as the catalyst.