The aim of this work was the devewlopement of Pd-catalyzed aminocarbonylative cross coupling reactions to obtain various amide scaffolds. These syntheses were performed with the use of molybdenum hexacarbonyl as alternative CO source to avoid the application of gaseous carbon monoxide. The second part of the work focused on tandem condensation-cyclisation reactions of 2-amino-benzonitriles with aldehydes to give access to 1,2-dihydroquinazolinones. The condensation-cyclisation was furthermore performed using 2-amino-benzothioamides to allow for the synthesis of 1,2-dihydro-quinazolinthiones.