Synthesis of phosphonylated azadienes as building blocks for azaheterocyclic phosphonates

The aim of this project is the synthesis of innovative phosphonylated azadienes, i.e. 4-phosphono-2-aza-1,3-dienes, as precursors for phosphonylated azaheterocyclic three-, four-, five- and six-membered rings. The reactivity of these 4-phosphono-2-aza-1,3-dienes will be studied in depth using carbenes and different types of nucleophiles. Further, a direct synthesis of 3-pyridylphosphonates is envisaged.