Cyclopropenes as Reagents for Synthesis. Cycloaddition Reactions with Cyclopropenes

All articles of this category Cyclopropenes are reagents for synthesis of heterocycles and other carbocycles via the reactions discussed in this review. 1. Diels-Alder Reactions 1.1. Reaction Conditions 1.2. Effects of Cyclopropenyl Substituents 1.2.1. Inductive Effects 1.2.2. Stereochemical Consequences 1.2.3. Rearrangements of Adducts 2. [ π 2+ π 2] Additions 2.1. Self Condensations 2.2. Crossed Condensations 3. 1,3-Dipolar Additions 3.1. Addition of Diazomethanes 3.2. Addition of Aziridines 3.3. Addition of Other 1,3-Dipoles 4. Cycloadditions Across Cyclopropenyl σ Bonds 4.1. Intermolecular Condensations 4.2. Intramolecular Condensations 5. Additions of Divalent Carbon 6. Cycloadditions Initiated By Bases