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Topic: Acetophenone synthesis without Friedel-Crafts  (Read 4695 times)

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Offline rburton

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Acetophenone synthesis without Friedel-Crafts
« on: March 04, 2015, 01:23:44 PM »
I need to find a reaction to synthesize Acetophenone from benzene without using the Friedel-Crafts acylation, do you guys have any clue?

I just need to figure out the reactives, not the mechanism.


Thanks in advance!

Robert

Offline TheUnassuming

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Re: Acetophenone synthesis without Friedel-Crafts
« Reply #1 on: March 04, 2015, 01:42:12 PM »
I assume this is for a class?
What section are you currently covering?
When in doubt, avoid the Stille coupling.

Offline rburton

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Re: Acetophenone synthesis without Friedel-Crafts
« Reply #2 on: March 04, 2015, 01:56:44 PM »
Indeed, Alkenes, Alkynes and arenes.


Offline sjb

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Re: Acetophenone synthesis without Friedel-Crafts
« Reply #3 on: March 05, 2015, 02:15:50 AM »
Indeed, Alkenes, Alkynes and arenes.

DO you know how to convert any of these into a ketone?

Offline orgopete

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Re: Acetophenone synthesis without Friedel-Crafts
« Reply #4 on: March 05, 2015, 08:14:46 AM »
Hint, can you make the benzene ring into a better nucleophile, something that might add to an aldehyde or ketone?
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Offline rburton

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Re: Acetophenone synthesis without Friedel-Crafts
« Reply #5 on: March 05, 2015, 10:08:43 AM »
I only know some particulars transformation of Alkenes into ketone, like Friedel-Crafts or Ozonolysis.

In order to make the benzene a better nucleophile, I guess it should loss some H, but I'm not sure how.

Offline orgopete

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Re: Acetophenone synthesis without Friedel-Crafts
« Reply #6 on: March 06, 2015, 01:14:07 AM »
Grignard?
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Offline rburton

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Re: Acetophenone synthesis without Friedel-Crafts
« Reply #7 on: March 06, 2015, 06:56:32 AM »
What about with Acetic anhydride and Aluminium chloride, would that work?

Offline Dan

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Re: Acetophenone synthesis without Friedel-Crafts
« Reply #8 on: March 06, 2015, 07:33:37 AM »
What about with Acetic anhydride and Aluminium chloride, would that work?

That's Friedel-Crafts acylation.
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Offline rburton

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Re: Acetophenone synthesis without Friedel-Crafts
« Reply #9 on: March 06, 2015, 08:16:35 AM »
Right! Would this Friedel-Crafts acylation works too if we had let's say a bromobenzene instead of a benzene, or in this case, there are other factors a take into account?

Offline Dan

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Re: Acetophenone synthesis without Friedel-Crafts
« Reply #10 on: March 06, 2015, 09:20:23 AM »
My point is you stated in your first post that you need a route without F-C acylation.
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Offline rburton

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Re: Acetophenone synthesis without Friedel-Crafts
« Reply #11 on: March 08, 2015, 03:51:56 PM »
I didn't realize that was a F-C acylation.

Offline PL

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Re: Acetophenone synthesis without Friedel-Crafts
« Reply #12 on: March 09, 2015, 05:39:30 AM »
We can prepare acetophenone in vapour phase using zeolites as catalyst and aceticanhydride as acylating agent.

Offline kriggy

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Re: Acetophenone synthesis without Friedel-Crafts
« Reply #13 on: March 09, 2015, 01:01:22 PM »
That looks like a modification of friedel crafts.

What about Grignard reaction?

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