corrole
Sign in to save200px|right|thumb|Cobalamin structure includes a deprotonated [[corrin macrocycle.]] A corrole is an aromatic tetrapyrrole. The corrin ring is also present in cobalamin (vitamin B12). The ring consists of nineteen carbon atoms, with four nitrogen atoms in the core of the molecule. In this sense, corrole is very similar to porphyrin.
~2 min read
Encyclopedic overview
4 sectionsContents
- Preparation
- Comparison with porphyrins
- Coordination complexes
- References
200px|right|thumb|Cobalamin structure includes a deprotonated [[corrin macrocycle.]] A corrole is an aromatic tetrapyrrole. The corrin ring is also present in cobalamin (vitamin B12). The ring consists of nineteen carbon atoms, with four nitrogen atoms in the core of the molecule. In this sense, corrole is very similar to porphyrin.
==Preparation== Corroles can be prepared by a two-step process, beginning with the condensation reaction of a benzaldehyde with pyrrole. The open-ring product, a bilane (or tetrapyrrane), is cyclized by oxidation, typically with p-chloranil:
Excerpted from Wikipedia’s “corrole” article, available under the CC BY-SA 4.0 licence.