Phosphoric Acid Catalyzed 1,2-Rearrangements of 3-Hydroxyindolenines to Indoxyls and 2-Oxindoles: Reagent-Controlled Regioselectivity Enabled by Dual Activation Schendera, E. Lerch, S. von Drathen, T. Unkel, L.-N. Brasholz, Malte 2017 - Forschungsinformationssystem der UHH