extrusion transformation
A
transformation
in which an atom or group
Y
connected to two other atoms or groups
X
and
Z
is lost from a molecule, leading to a product in which
X
is bonded to
Z
, e.g.
or
The reverse of an extrusion is called
insertion
.
See:
cheletropic reaction
Source:
PAC, 1994,
66
, 1077
(Glossary of terms used in physical organic chemistry (IUPAC Recommendations 1994))
on page 1114
