A chemical reaction, the principal product of which is isomeric
with the principal reactant. An intramolecular
isomerization that involves the breaking or making of bonds is a special case of
a molecular rearrangement
. Isomerization does not necessarily imply molecular rearrangement
(e.g. in the case of the interconversion of conformational isomers).
PAC, 1994, 66, 1077
(Glossary of terms used in physical organic chemistry (IUPAC Recommendations 1994))
on page 1129
IUPAC. Compendium of Chemical Terminology, 2nd ed. (the "Gold Book"). Compiled by
A. D. McNaught and A. Wilkinson. Blackwell Scientific Publications, Oxford (1997).
XML on-line corrected version: http://goldbook.iupac.org (2006-) created by M. Nic,
J. Jirat, B. Kosata; updates compiled by A. Jenkins. ISBN 0-9678550-9-8. https://doi.org/10.1351/goldbook