Resumen de Bioinspired ligands and model substrates for the mechanistic elucidation of oxygen activation and cross-coupling reactions mediated by first-row transition metals
Nowadays, one of the main goals in organic chemistry and fine industry is the development of new synthetic methodologies for the preparation of life-relevant products in a sustainable manner. The use of first-row transition-metals to mediate these transformations has drastically revolutionized the field. In order to develop efficient protocols, mechanistic understanding of the steps that occur in each transformation is required. For first-row transition-metal mediated transformations, this fundamental knowledge is usually scarce due to the elusive character of the intermediate species formed in situ and to the different reaction pathways that can occur depending on the reaction conditions applied. This doctoral dissertation is focused on the mechanistic understanding of different reactions mediated by first-row transition-metals using specially designed ligands to stabilize the otherwise very reactive intermediate species. The first part of this thesis deals with reactivity of two copper systems bearing bioinspired ligands for the activation of molecular oxygen. In the second part of this thesis we turned our attention in trapping intermediate species relevant to C-C and C-O bond forming reactions mediated by organometallic iron and nickel complexes.
