Orgo question

[Ferdowsi]

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I have a question regarding Friedel crafts alkylation. does rearrangement occur?

Thanks

 

[wifi08]

if your adding a straight chain alkane, if you have more than two methyl groups rearrangement will occur

 

[Orgodox]

Yup but thats why you can do a friedel-acylation craft followed by reduction to get your straight chain on without rearrangement.

 

[Ferdowsi]

Thanks guys.

 

[topdent1]

I believe destroyer says that if your alkane is more than 3 carbons long, than it will rearrange to form the most stable carbocation.