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5.4 Mechanism Strategies
chlorination of benzene is followed by an elimination-addition reaction.
The elimination-addition process requires us to carefully choose the reagents.
The product will be aniline if we use NaNH followed by H O+.
You need to be able to look at all of the information and figure out which of the three mechanisms is working.
The aromatic ring has reagents reacting with it.
If the reagents are electrophilic, expect an aromatic substitution.
You have to decide between an S Ar reaction and an elimination-addition reaction if the reagents are nucleophilic.
There are three criteria needed for an S Ar reaction.
The reagents are the first thing we look at.
We don't expect an aromatic substitution because Hydroxide is a nucleophile.
We have to decide between an elimination-addition mechanism and an S Ar mechanism.
An S Ar mechanism is not likely to happen.
There are mechanisms that do not always show you all of the products.
It could be a k minor product.
There are no claims that the product is major or minor.
A mechanism problem is asking you to justify how the product was formed, regardless of how much of it was actually obtained from the reaction.
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