ChemInform Abstract: Aminocyclopropenium Ions: Synthesis, Properties, and Applications

This review covers the preparation, physical properties, and applications of cyclopropenium ions bearing one, two, or three amino substituents. It provides a description of the most reliable methods to access these unique structures as well as a discussion of the reactivity profiles of the common subtypes. 1 Introduction 2 Preparation 3 Properties 3.1 Stability 3.2 Redox Behavior 3.3 Ion Pair Strain 4 Reactions 5 Applications 5.1 Ionic Liquids 5.2 Metal Complexes 5.2.1 TDAC π-Complexes 5.2.2 BDAC σ-Complexes 5.2.3 Cyclopropenimine Ligands 5.2.4 BDAC–Phosphorus Ligands 5.3 Bronsted Bases 6 Conclusion