of an entering group
to a position in an aromatic compound already carrying a substituent group
(other than hydrogen). The entering group
may displace that substituent group but may also itself be expelled or migrate to
a different position in a subsequent step. The term 'ipso-substitution
' is not used, since it is synonymous with substitution. For example:
where E + is an electrophile
and Z is a substituent (other than hydrogen).
PAC, 1994, 66, 1077
(Glossary of terms used in physical organic chemistry (IUPAC Recommendations 1994))
on page 1128
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