Preferred Label : annulation;
IUPAC definition : A transformation involving fusion of a new ring to a molecule via two new bonds. Some
authors use the term 'annelation' for the fusion of an additional ring to an already
existing one, and 'annulation' for the formation of a ring from one or several acyclic
precursors, but this distinction is not made generally.;
Origin ID : A00367;
Automatic exact mappings (from CISMeF team)
See also
A transformation involving fusion of a new ring to a molecule via two new bonds. Some
authors use the term 'annelation' for the fusion of an additional ring to an already
existing one, and 'annulation' for the formation of a ring from one or several acyclic
precursors, but this distinction is not made generally.