Oxadiazolone-Based Aromatic Annulations: A Nitrenoid Precursor for Tricyclic Aminoheterocycles.

Zhu WF, Franz HM, Krämer A, Duman E, Empel C, Göbel MW, Koenigs RM, Knapp S, Hiesinger K, Proschak E, Hernandez-Olmos V