[spirochete]

I recently learned about the hammond postulate and its implications for the specificity of free radical bromination.  I found it really interesting because it brings together a bunch of fundamental, intuitive concepts in a satisfying way.  But at this point in my "learnings" I've only applied to one reaction.  I'm currently taking organic II, my professor just chooses to teach things in a funny way.

The point of the post is:  Are there a lot of other mechanisms where the specificity of an endothermic reaction is important or useful as in free radical bromination?  Is this a common consideration in organic synthesis?  If so, what are examples.

Thank you in advance for indulging my nerdiness.

[optimusprime]

It's very useful to determine the kinetic product of a given reaction.