On 2nd July 2021, our student Manuel Ramírez Rodríguez defended his doctoral thesis titled “Catalytic systems based on Cu and Ag for the development of new nitrene transfer reactions”. Manuel carried out his work in the Homogeneous Catalysis Laboratory under the supervision of Prof. Pedro J. Pérez and Prof. Mª Mar Díaz-Requejo, obtaining Summa Cum Laude.