efficient and selective oxidation of benzylic alcohols by poly -amino acid co(ii)-complex supported on magnetite graphene oxide

A cobalt complex of a synthetic poly -amino acid was immobilized on fe3o4-doped graphene oxide (go/fe3o4@paa co(ii)) and was used as a highly efficient catalyst for the oxidation of bezyl alcohols under mild conditions. paa was synthesized through a multi-step synthesis, first by a poly condensation reaction of salicylaldehyde followed by the strecker synthesis. the synthesized nanocomposite was characterized by different methods including ftir, icp, xrd, edx, xps, fe-sem, tem, tga, vsm and dls analyses. a wide variety of benzyl alcohols could be tolerated toward oxidation to the corresponding aldehyde in the presence of molecular oxygen without the need for any co-reductant. the magnetic nanocomposite could be readily separated by a magnet from the mixture and reused for several times without any significant reactivity loss, which represents its potential for practical and industrial application.