Ring forming reaction
A ring forming reaction or ring-closing reaction in organic chemistry is an umbrella term for a variety of reactions that introduce one or more rings into a molecule. A heterocycle forming reaction is a reaction that introduces a new heterocycle.
Important classes of ring forming reactions include annulations and cycloadditions. Heterocyclic compounds are useful in spectroscopic identification of compounds, purity criteria, and investigating the molecular electronic structures.
Named ring forming reactions
Named ring forming reactions include :- Azide-alkyne Huisgen cycloaddition
- Bischler–Napieralski reaction
- Bucherer carbazole synthesis
- Danheiser annulation
- Dieckmann condensation
- Diels–Alder reaction
- Feist–Benary synthesis
- Fiesselmann thiophene synthesis
- Fischer indole synthesis
- Gewald reaction
- Hantzsch pyridine synthesis
- Larock indole synthesis
- Paal–Knorr synthesis
- Pictet–Spengler reaction
- Pomeranz–Fritsch reaction
- Ring-closing metathesis
- Robinson annulation
- Skraup reaction