My watch list  

Activating group

In organic chemistry, a functional group is called an activating group if a benzene molecule to which it is attached more readily participates in electrophilic substitution reactions. Benzene itself will normally undergo substitutions by electrophiles, but additional substituents can alter the reaction rate or products by electronically or sterically affecting the interaction of the two reactants.

Functional groups are typically divided into three levels of activating ability. Deactivating groups are assigned to similar groupings.

Strongly Activating Groups

-NH2 -NHR -NR2
-OH -O-

Moderately Activating Groups


Weakly Activating Groups

-CH3 -C2H5 -R
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Activating_group". A list of authors is available in Wikipedia.
Your browser is not current. Microsoft Internet Explorer 6.0 does not support some functions on Chemie.DE