Relating to or denoting a reaction that involves a concerted rearrangement of bonding in which all the bonds broken or formed in the reaction lie on a closed ring, whether or not a cyclic molecule is involved.
- ‘In pericyclic reactions, bonds are made or broken in a concerted cyclic transition state.’
- ‘But, because the mechanism for the reaction is pericyclic, there is retention of geometry such that quite specific products can be generated.’
- ‘Chemists everywhere are now familiar with the Woodward-Hoffmann rules for pericyclic reactions, which tied a whole list of cyclizations and rearrangements into a coherent bundle.’
Relating to a pericycle.
- ‘Azima tetracantha bark is distinctive in having bundle cap (‘pericyclic’) fibers and sclereid nests in phloem rays.’