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Topic: Adding tert-butyl to a benzene?  (Read 5407 times)

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Offline hobobot

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Adding tert-butyl to a benzene?
« on: May 23, 2011, 02:30:27 PM »
I went to a party full of chem majors the other day and a sophomore asked me a question I couldn't remember how to do. (mostly because it's been a year since my last chem class)
anyway let's pretend we have 4-methylphenol and I want to add two tert-butyls ortho to the OH group.
Will FC work? Or is t-butyl too big?
Someone said something about mixing an acid with t-butanol but I wasn't sure what that was all about.

Offline Honclbrif

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Re: Adding tert-butyl to a benzene?
« Reply #1 on: May 23, 2011, 03:20:47 PM »
Looks like it could be possible, but the yield would probably suck due to the crowding. Having a phenol OH in there probably wouldn't be the best conditions either.

But on to the other question: what's the mechanism of FC alkylation? What happens when you mix a strong acid with tBuOH? There's another way to generate the same reactive species without using any leaving groups at all.
Individual results may vary

Offline hobobot

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Re: Adding tert-butyl to a benzene?
« Reply #2 on: May 24, 2011, 02:32:17 AM »
you mean make the cation by dehydrating TbutOH?...ahh I get it now. Wasn't thinking about how it's a tertiary carbon. that would totally work. Thank you!

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