Synfacts, Table of Contents Synfacts 2022; 18(04): 0365DOI: 10.1055/s-0041-1737915 Synthesis of Heterocycles TfOH-Promoted Selective C2–N1 Ring-Expansion Reaction of Indazoles Authors (Pfizer) Contributor(s): Paul Richardson Emily Laughlin Recommend Article Abstract Buy Article(opens in new window)Key words Key wordsindoles - ring expansion - quinolines - spirocyclic indolenines Full Text