Annulation
id:
annulation-0-6855805
title:
Annulation
text:
In organic chemistry, annulation is a chemical reaction in which a new ring is constructed on a molecule. Examples are the Robinson annulation, Danheiser annulation and certain cycloadditions. Annular molecules are constructed from side-on condensed cyclic segments, for example helicenes and acenes. In transannulation a bicyclic molecule is created by intramolecular carbon-carbon bond formation in a large monocyclic ring. An example is the samarium(II) iodide induced ketone - alkene cyclization
brand slug:
wiki
category slug:
encyclopedia
description:
Chemical reaction constructing a new ring on a molecule
original url:
https://en.wikipedia.org/wiki/Annulation
date created:
date modified:
2024-01-30T19:27:45Z
main entity:
{"identifier":"Q529093","url":"https://www.wikidata.org/entity/Q529093"}
image:
{"content_url":"https://upload.wikimedia.org/wikipedia/commons/9/9c/KetoneOlefinCyclization.png","width":800,"height":596}
fields total:
13
integrity:
15