Cobalt-Catalyzed Acceptorless Dehydrogenation of Alcohols to Carboxylate Salts and Hydrogen
Deepak Ranjan Pradhan, Sandip Pattanaik, Jugal Kishore, Chidambaram Gunanathan
Abstract
The facile oxidation of alcohols to carboxylate salts and H2 is achieved using a simple and readily accessible cobalt pincer catalyst (NNNHtBuCoBr2). The reaction follows an acceptorless dehydrogenation pathway and displays good functional group tolerance. The amine–amide metal–ligand cooperation in cobalt catalyst is suggested to facilitate this transformation. The mechanistic studies indicate that in-situ-formed aldehydes react with a base through a Cannizzaro-type pathway, resulting in potassium hemiacetolate, which further undergoes catalytic dehydrogenation to provide the carboxylate salts and H2.
Topics & Concepts
DehydrogenationChemistryCatalysisCobaltCarboxylatePincer movementAmideLigand (biochemistry)Amine gas treatingCombinatorial chemistryOrganic chemistryBiochemistryReceptorAsymmetric Hydrogenation and CatalysisCarbon dioxide utilization in catalysisNanomaterials for catalytic reactions