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Reaction Mechanism in More Detail

Posted: Sun Feb 26, 2017 8:48 pm
by Alejandra_Vasquez_1B
When dealing with an electrophilic addition reaction, is the goal to breakup double bonds? In the course reader, the example of HBr and 2-Butene, says to break up the double bond. Is that always going to be the case for other reactions? Is it best to try and get rid of the double bond?

Re: Reaction Mechanism in More Detail

Posted: Sun Feb 26, 2017 9:22 pm
by Chem_Mod
The reason why the double bond is being broken is because it is an electrophile, and the C=C bond is at a higher relative energy than a C-C bond. So this reaction would go downhill from a double bond to a single bond, and the double bond is the site to do it.

As for more generally electrophilic addition, it is not always the case that you have a double bond. It may be, for instance, a triple bond.