Oxidative intramolecular 1,2-amino-oxygenation of alkynes under Au I /Au III catalysis: discovery of a pyridinium-oxazole dyad as an ionic fluorophore - Shaikh, Aslam C.; Ranade, Dnyanesh Sadanand; Rajamohanan, Pattuparambil R.; Kulkarni, Prasad Padmakar; Patil, Nitin T. (Angewandte Chemie‐International Edition, 2017)